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  • 1.
    Abdalameir, Hussein
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Daher, Maher
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Standardization of interfaces for electrical cabinets: How to optimize time saving and cost efficiency for electrical cabinets in submarines2022Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Background: In general, it is very complicated to build submarines. There are many parts and equipment that must be in place, and there are tight spaces on the boat. As submarine development progresses and new modern concepts take shape, the installation of new equipment on board becomes more complex, placing higher demands on well-defined interfaces, both geometrically and logically. The approach to electrical cabinets today is to run the cables from the bottom or top through a cable transit system, and only after the cabinet is installed on the submarine can the cables be installed in the proper terminals. This means that the installation takes a lot of time and combined with the fact that there are so many cables sticking out of the cable grommet, the work becomes even more superficial as installers are also constrained by the tight space. Sometimes workers also must move around to make room for others to pass through other parts of the submarine. This means that workers must leave their jobs and move before resuming their work. The following can happen several times a day, which means more time is needed to install electrical cabinets on the submarine.

     

    Purpose: The purpose of this work is to develop and design a solution that is a standardized interface for equipment in the form of electrical cabinets that are present and used in submarines. In this way, the solution must be able to satisfy the different interfaces of the devices that the different subcontractors provide to the company. The created proposals must be illustrated with a CAD software to visualize the concept.

     

    Methodology: The research methodology used in this project is a combination of Participatory Action Research (PAR) and Design Thinking (DT).

     

    Result: The result presents a solution (ISO-box) that shows that it is possible to reduce and optimize the time to install the cabinet once the cabinet is permanently mounted on the submarine. The solution is presented in the form of a CAD model. The model is set up so that all the cables coming from the cable transit system have an adapter at the end, which has a counterpart in a box to the cabinet that is installed on the submarine. Then when the cabinet is assembled, all that must be done is to plug the right connector into the right place in this box. The box has colors for the connectors and numbering that makes it easier for the installer to know which adapter to use.

     

    Conclusions: The work shows that it is quite possible to change the current solution so that less time is needed in the final assembly of the cabinets. It will be easier to just connect the contacts and then leave room for others to pass in the confined spaces. It will also be easier to maintain, as the installer can replace broken contacts as the solution is modular, and there is the possibility of installing new equipment with ISO-box if necessary.

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    fulltext
  • 2.
    Abdallah, Lana
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Persson, Mattias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    The effects of environmental uncertainty conditions on organisational innovativeness and performance of SMEs.2014Självständigt arbete på avancerad nivå (magisterexamen)Studentuppsats (Examensarbete)
    Abstract [en]

    Innovativeness is considered to be an important factor for firm’s survival and their ability to compete in today’s market. Therefore, researchers have become more interested in studying innovativeness and its drivers. Studies have also showed that there’s a positive relationship between environmental uncertainty and innovativeness. Organisations are responsive to turbulent environments through innovativeness in order to stay competitive and improve performance. The purpose of this thesis is to rank critical environmental factor’s effect on organisational innovativeness of small and medium enterprises in Sweden, through investigating the impact of market/demand turbulence and technological turbulence on innovativeness. Additionally, we want to examine the relationship between innovativeness and business performance, as well as the indirect relationship between environmental uncertainty and performance. Based on previous literature, we have developed hypotheses and proposed a research model to study the formulated problems. Data for the study were collected from 50 SMEs in Sweden, through a survey with well-known scales and were analysed using regression analysis. The results of the study, reveal that environmental uncertainty has a positive effect on the innovativeness of SMEs. In addition, technological turbulence showed to have a positive significant effect on an SME’s innovativeness; however, contrary to general belief, market/demand turbulence did not have any prominent effect. Our findings also proved that innovativeness have a strong positive impact on business performance, and that only technological turbulence have an indirect influence on performance through innovativeness. This study aimed to contribute to the management a better understanding, of which conditions of environmental turbulences SMEs should adapt to, in order to increase their level of innovativeness. Keywords: environmental uncertainty, organizational innovativeness, performance, market/demand turbulence, technological turbulence, SMEs.

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    FULLTEXT01
  • 3.
    Aco, Dekan
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tillverkningsekonomisk utvärdering av återvinning och återanvändning av blyfri mässing2018Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Detta examensarbete är en del av ett större projekt (Evochip) som bedrivs på Lunds tekniska högskola, avdelningen för industriell produktion (iProd) och med samarbete med bland annat AB Markaryds metallarmatur och Mistra innovation. I detta arbete har en dynamisk kostnadsmodell tagits fram för att beräkna tillverkningskostnaderna av komponenter tillverkade av återanvända spånor av blyfri mässing från de egna tillverkningsprocesserna hos AB Markaryds metallarmatur (MMA).

    Idag skickas alla kasserade detaljer och materialspill ner till materialleverantörer i Sydeuropa för återvinning. Transporterna sker med lastbil och återvinningsprocessen utgår från ett energikrävande nedsmältningssteg. Idag pågår utvecklingsprojekt med målet att återanvända spånorna utan nedsmältning hos MMA, men kostnadsbilden per detalj har varit hittills okänd. Med hjälp av detta examensarbete ska detaljpriset tas fram. Tillverkningsprocessen delas in i totalt 11 olika förädlingsstationer. För att kartlägga kostnaderna används Jan-Eric Ståhls dynamiska kostnadsmodell. Nödvändig data och information har samlats in med hjälp av intervjuer på företaget och genom företagets egna dokumentationer. För att minska felmarginalen i resultaten har lämpliga Monte Carlo simuleringar utförts.

    Arbetet utgår även från ett hållbarhetsperspektiv. Förutom elimineringen av lastbilstransporter och energikrävande nedsmältningsprocesser för grundmaterialet, främjar arbetet även användning och återanvändning av blyfri mässing genom att kompaktera spånor till nya grönkroppar. Detta då forskare länge har varnat för blyade detaljers negativa hälsoeffekter. 

    Detaljen som undersöks i detta arbete är en ventil som har benämningen EVO 10, vilken återfinns i företagets blyfria standardsortiment. Kostnadsmodellen är dynamisk till den grad att den i framtiden skulle kunna appliceras på övriga blyfria mässingkomponenter hos MMA.     

    En jämförelse mellan två olika koncept presenteras i resultatdelen. Koncept ett representerar dagens tillverkningssystem, och koncept två framtidens kompakteringsteknik. Då många av förädlingsstegen är desamma för båda systemen, valdes en jämförelse mellan framtagningen av grönkropparna genom de två olika koncepten. Resultaten visar att kutsar, framtagna enligt dagens tillverkningssystem, kostar 12,75 SEK/detalj, och kutsar framtagna enligt koncept två kostar 9,61 SEK/detalj.

    Då koncept två är beroende av spånor från dagens tillverkningssystem, kan MMA inte helt gå över till att kompaktera spånor till nya kutsar. Mer arbete måste utföras för att hitta en balanserad modell mellan de två olika tillverkningssystemen för bästa möjliga resultat. Monte Carlo-simuleringarna visar att kostnaden per detalj uppgår till 12.96 SEK, detta med de på förhand valda konstanter och variabler i systemet.

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  • 4.
    Adolfsson, Erika
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Automatiseringskonstruktion till mätfixtur2019Självständigt arbete på grundnivå (högskoleexamen), 12 poäng / 18 hpStudentuppsats (Examensarbete)
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    BTH2019Adolfsson
  • 5.
    Agenyi, Benjamin
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Mobile Banking and Entrepreneurship in Developing Countries:A case study of Nigeria2013Självständigt arbete på avancerad nivå (magisterexamen)Studentuppsats (Examensarbete)
    Abstract [en]

    The purpose of this study was to identify ways by which entrepreneurial mobile banking growth could be accelerated in developing countries. An exploratory research method was adopted to identify the facilitators and obstacles to entrepreneurial mobile banking. The finding reveals some facilitators which include government policies and efforts of donor agencies, stiffer competition among banks, need for efficiency and lower cost, telecoms focus on customers retention. While some obstacles include conservative and vague regulation, security issues, underdeveloped infrastructures, lack of interoperability and lack of basic need for financial services. The main contribution of this study is the concise identification of the facilitators and obstacles to entrepreneurial mobile banking especially in developing countries. Suggestion for further study was made. The findings could be useful to policy-makers, donor agencies and other development partners in designing and directing their policies intervention

    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 6.
    Aisvaran, Chandramohan
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Study of non-linear strain path in sheet metal forming2021Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    At present, Sheet Metal Forming (SMF) is not just limited to increasing demand from automobile industries but also to various other manufacturing industries that utilize sheet metal forming processes. The surplus demands for optimised manufacturing products warrant the need for an extended decisive study on SMF. 

    One such area of study in SMF is formability. Traditionally, formability is predicted using the conventional Forming Limit Curve (FLC). But when it comes to complex SMF processes, FLC failure model can sometimes overestimate (for low uniaxial straining) or underestimate (for bi-axial straining) failure. This thesis focuses on suitable test procedures to generate non-linear strain paths and prediction of formability using the concept of Generalized Forming Limit Curve (GFLC). Initially, through systematic literature review, two-step process is chosen as the test procedure in this thesis. The test procedure was simulated in LS-Dyna to obtain results which are then used by GFLC concept to predict formability for a bi-linear deformation history. The predicted formability using the concept of GFLC is then compared with the predicted formability using FE-simulation and using experimentation.  The found percent error for GFLC prediction compared to that of FE-simulation prediction is 11% and the percent error for GFLC prediction and experimentation prediction is 14%. However, these two predictions can not be used to validate the GFLC prediction. This is because in this thesis GFLC procedure uses data obtained from FE-simulation with GISSMO failure model. Through literature, it is identified that the GFLC concept can be applied for multi-linear deformation histories to predict formability and the method to do so is explained in detail in this thesis. Finally, it is concluded that the use of the GFLC concept in conjunction with the two-step drawing process to predict formability for bi-linear deformation history is acceptable.

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    fulltext
  • 7.
    ALAMSETTY, SREETEJA
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    VEMURI, SAITEJA
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Springback Analysis of Aluminium Alloy 2024 in Flex-forming Process2017Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 8.
    Allesson, Sara
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Sheet Metal Forming Simulations with Elastic Dies: Emphasis on Computational Cost2019Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Bilindustrin producerar många av sina bildelar genom att tillämpa plåtformning, där en av de mest tidskrävande faserna är utveckling och tillverkning av nya formningsverktyg. Idag, när ett nytt verktyg ska utvärderas med avseende på användbarhet, genomförs en formningssimulering för att förutsäga eventuella fel innan tillverkning. Antagandet är då att verktygen är stela och den enda deformerbara delen är själva plåten. Det är dock inte så, eftersom verktygen också deformeras under formningsprocessen. Tidigare forskning, som ligger till grund för detta examensarbete, inkluderade en modell med endast elastiska verktyg och visade resultat med hög noggrannhet i jämförelse med att använda stela verktyg. Simuleringen med elastiska verktyg är emellertid inte optimal att implementera för daglig användning, eftersom den kräver hög beräkningskraft och har en lång simuleringstid.

    Syftet och omfattningen av detta examensarbete är att utvärdera hur en plåtformningssimulering med elastiska verktyg kan minskas med avseende på beräkningskostnaden, genom att använda programvaran LS-DYNA. En liten avvikelse från formningsresultatet är acceptabelt, och målet är att köra simuleringen med en 50-75 % minskning av tiden på färre kärnor än ungefär 14 timmar och 800 processorer som simuleringen kräver idag.

    Det första steget är att ändra verktygets geometri och utvärdera inverkan på deformationerna av plåten. De elastiska solida verktygsdelarna som endast har små deformationer raderas och ersätts av stela ytor, vilket gör modellen delvis elastisk. Senare studeras olika dekompositionsmetoder för att avgöra vilka som gör simuleringen snabbare. Till sist utförs en skalningsanalys för att bestämma antalet processorer som ska användas för att köra simuleringen så effektivt som möjligt.

    Korrelationen av huvudtöjningarna mellan en helt elastisk modell och en delvis elastisk modell visade resultat av hög noggrannhet, såväl som jämförelse med produktionsmätningar av en format plåt. Beräkningstiden minskar med över 90 % när man använder ungefär 65 % av den ursprungliga beräkningskraften. Om simuleringarna körs med färre antal kärnor, cirka 10 % av ursprungligt antal CPUer, minskar simuleringstiden med 70 %. 

    Slutsatsen av detta arbete är att det är möjligt att köra en delvis elastisk plåtformningssimulering mycket effektivare än att använda en helt elastisk modell, utan att de resulterar i pålitlighetsproblem. Detta genom att minska antalet element, utvärdera dekompositionsmetoden och genom att genomföra en skalningsanalys för att utvärdera effektiviteten av beräkningskraften.

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  • 9.
    An, Hai
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Gu, Lujun
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Main Success Factors for Developing Car-sharing in China2015Självständigt arbete på avancerad nivå (magisterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
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  • 10.
    Andersson, Andreas
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Measuring the contact pressure during sheet metal forming of automotive components2020Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Konkurrensen på bilmarknaden i världen intensifieras kontinuerligt. För att få en fördel påmarknaden samtidigt som de gör vinst måste varje biltillverkare ha ett starkt fokus på att alltid förbättrateknikutvecklingen. Det är inte bara bilens teknik som behöver utvecklas, utan det är lika viktigt attförbättra tillverkningsprocesserna i sig. I slutändan kommer detta att resultera i mer attraktiva produkterför kunden till ett konkurrenskraftigt pris.

    Syftet och omfattningen av detta examensarbete är att få en djupare förståelse av krafterna ipressverktyget under plåtformningprocessen. Genom att använda töjningsgivare och mikrokontrollerkunde krafterna under hela formningsprocessen mätas och analyseras. Förhållandet mellan kraften påmothållarpinnarna i verktyget och längden på pinnarna undersöktes också genom att lägga till shims påpinnarna.

    Ett modulsystem som använde Arduino Uno med 3D-printade delar utvecklades för att mätakrafterna i formen under formningsprocessen. Ett Arduino-mjukvarusystem och TeraTerm bedömdesvara det mest lämpliga för att samla in och organisera data från töjningssensorer och mikrokontroller. Tester genomfördes sedan med olika inställningar i pressen, och dessa visade att krafterna ipressverktyget var ojämna. Genom att lägga till shims på pinnarna så att de alla var lika långa utjämnadeskrafterna i pressverktyget. Ett annat test visade att genom att lägga till fler shims på endast en avmothållarpinnarna ökade kraften i pinnen. Genom att tillägg till 0,5 mm shims på den pinnen mer änfördubblade den maximala kraften.

    Systemet som utvecklats i denna rapport kan mäta krafterna i pressverktygets mothållarpinnarunder formningsprocessen vid en lägre produktionshastighet. Detta system kan också upptäcka olikakraftinställningar i pressen. Slutligen kan den också upptäcka skillnader i kraft vid olika längder påmothållarpinnarna.

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    fulltext
  • 11.
    Andersson, Carolina
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Fritidsbåt för alla2015Självständigt arbete på grundnivå (kandidatexamen), 180 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Ett fysiskt handikapp kan innebära stora begränsningar i livet. För de som sitter i rullstol kan det vara mycket svårt eller till och med omöjligt att förflytta sig dit de vill och få uppleva aktiviteter som personer utan handikapp tar för givet. Det här kandidatarbetet har haft som syfte att ta fram en handikappanordning som ska göra det möjligt för rullstolsburna att kunna ta sig ombord och iland från fritidsbåtar. Det finns redan olika lösningar på marknaden som syftar till att möjliggöra en sådan förflyttning, men målet med det här arbetet har varit att ta fram en lösning som är annorlunda jämfört med de befintliga lösningarna framförallt vad gäller möjligheten till att använda den från båten istället för från kaj, samt att den ska kunna installeras till en rimlig kostnad och dess design ska passa flertalet fritidsbåtar utan alltför stora krav på båtens utformning. 

    Det viktigaste kravet på produkten är att den ska vara säker att använda. Det får inte föreligga någon risk för personskada. Andra krav som ställdes upp när problembeskrivningen arbetades fram är att anordningen ska vara enkel att använda. Installationen ska vara möjlig att göra i flertalet fritidsbåtar till en rimlig kostnad. Detta för att ett plötsligt behov av rullstolsanpassning inte nödvändigtvis ska behöva innebära inköp av en ny båt. Produkten ska vara hållbar (kunna vara monterad och användas under många år) och inte kräva service under den primära utnyttjandeperioden (under sommaren). Under utvecklingen togs hänsyn till miljöaspekter i val av tillverkningsmetoder och materialval. 

    Det slutliga produktförslaget, som arbetats fram efter att ha gjort flertalet analyser och utvärderingar av på marknaden befintliga lösningar, är en mast som monteras i durken på båten. Masten har ett stödben som placeras på bryggan/kaj, vilket ger stabilitet och därmed hög säkerhet för användaren. Detta då motorbåtar inte har en köl som kan fungera som motvikt för den sidobelastning som ombordstigningen innebär. 

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  • 12.
    Andersson, Eric
    et al.
    Blekinge Tekniska Högskola.
    Kostero, Yousef
    Produktutveckling av momentomvandlare för underlättning av bildäcksbyte2021Självständigt arbete på grundnivå (kandidatexamen), 12 poäng / 18 hpStudentuppsats (Examensarbete)
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    fulltext
  • 13.
    Andersson, Isac
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Utveckling av beräkningsmalltill ramar belastade med rör2022Självständigt arbete på grundnivå (kandidatexamen), 12 poäng / 18 hpStudentuppsats (Examensarbete)
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    Utveckling av beräkningsmall till ramar belastade med rör
  • 14.
    Andersson, Oscar
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Lu, Anqi
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Elektriskt drivsystem för tandemvält: En utvecklingsprocess2017Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    I dagens samhälle har det blivit mer och mer populärt med miljövänliga lösningar. Inom detta område har fordonsindustrin utmärkt sig de senaste åren genom utvecklandet av eldrivna bilar. Därför börjar även företagen som utvecklar tunga maskiner bli intresserade av att börja utveckla mer miljövänliga produkter.

     

    Syftet med arbetet som vi utfört i samarbete med Dynapac Compaction Equipment AB i Karlskrona har varit att utveckla ett koncept till en lösning av ett miljövänligt drivsystem för deras minsta tandemvält. Det är tänkt att motsvara den vardagliga prestationen av det dieseldrivna systemet, utan att bli för dyrt, samt undvika att använda specialbeställda produkter.

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  • 15. Andersson, Petter
    et al.
    Isaksson, Ola
    Larsson, Tobias
    Luleå University of Technology.
    A case study of how knowledge based engineering tools support experience re-use2011Konferensbidrag (Refereegranskat)
    Abstract [en]

    A manufacturing company’s unique intellectual capital is to a large extent built on experience from its own product development and manufacturing processes. Thus, methods and tools to utilize and benefit from this experience in an efficient way have an impact on a company’s ability to stay competitive and advance on the global market. Knowledge Based Engineering (KBE) is an engineering methodology to capture engineering knowledge systematically into the design system. Hence, KBE tools are considered to support experience re-use and improve engineering activities. This paper presents the results from a study where the objective was to investigate the support for experience re-use in KBE applications in an aerospace company. A proposed framework is presented to analyze the capturing and use of experience in a company’s processes identifying gaps and propose improvements. The study revealed weaknesses in the process steps for experience feedback which can be used to improve KBE applications further.

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  • 16.
    Andreasson, Eskil
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Lindström, Tommy
    Lunds Universitet, SWE.
    Käck, Britta
    Altair Engineering AB, SWE.
    Malmberg, Christoffer
    Saab AB, SWE.
    Asp, Ann Magret
    Tetra Pak AB, SWE.
    Simulation of thin aluminium-foil in the packaging industry2017Ingår i: AIP Conference Proceedings / [ed] Brabazon D.,Ul Ahad I.,Naher S., American Institute of Physics Inc. , 2017, Vol. 1896, artikel-id 160014Konferensbidrag (Refereegranskat)
    Abstract [en]

    This work present an approach of how to account for the anisotropic mechanical material behaviour in the simulation models of the thin aluminium foil layer (≈10 μm) used in the Packaging Industry. Furthermore, the experimental results from uniaxial tensile tests are parameterised into an analytical expression and the slope of the hardening subsequently extended way beyond the experimental data points. This in order to accommodate the locally high stresses present in the experiments at the neck formation. An analytical expression, denominated Ramberg-Osgood, is used to describe the non-linear mechanical behaviour. Moreover it is possible with a direct method to translate the experimental uniaxial tensile test results into useful numerical material model parameters in Abaqus™. In addition to this the extended material behaviour including the plastic flow i.e. hardening, valid after onset of localisation, the described procedure can also capture the microscopic events, i.e. geometrical thinning, ongoing in the deformation of the aluminium foil. This method has earlier successfully been applied by Petri Mäkelä for paperboard material [1]. The engineering sound and parameterised description of the mechanical material behaviour facilitates an efficient categorisation of different aluminium foil alloys and aid the identification of the correct anisotropic (RD/TD/45°) mechanical material behaviour derived from the physical testing. © 2017 Author(s).

  • 17.
    Anjorin, Joshua Adetunji
    et al.
    Blekinge Tekniska Högskola, Sektionen för management.
    Ravi, Poornima Vandhana
    Blekinge Tekniska Högskola, Sektionen för management.
    Business Models: Assessment of the dynamic aspects and non-dynamic aspects2012Självständigt arbete på avancerad nivå (masterexamen)Studentuppsats (Examensarbete)
    Abstract [sv]

    Master's Thesis in Innovation, Entrepreneurship and Business Development

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  • 18.
    Asbjorn Sorensen, Charlotte
    et al.
    Malmö Högskola, SWE.
    Warell, Anders
    Lunds universitet, SWE.
    Jagtap, Santosh
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Material selection: A qualitative case study of five design consultancies2017Ingår i: DS87-1 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON ENGINEERING DESIGN (ICED 17), VOL 1: RESOURCE SENSITIVE DESIGN, DESIGN RESEARCH APPLICATIONS AND CASE STUDIES / [ed] Maier, A; Skec, S; Kim, H; Kokkolaras, M; Oehmen, J; Fadel, G; Salustri, F; VanDerLoos, M, The Design Society, 2017, nr DS87-1, s. 439-448, artikel-id DS87-1Konferensbidrag (Refereegranskat)
    Abstract [en]

    This qualitative case study aims at understanding when and how industrial designers, working in design consultancies, engage in activities that will influence material selection in the design process. While the extant literature presents material selection processes as a sequence of activities aimed at finding candidate materials, there is paucity of research on material criteria activities. Formulating material criteria is an activity that is performed during all design phases and they become clearer and more complete throughout the project. For the case studies, explorative semi-structured interviews were conducted with five industrial designers with 10 years of work experience or more. The results suggest (a) that risk management has a major influence on the material selection process, (b) that negotiations of project boundaries in the 'fuzzy' pre-design phase has crucial influence on the risk management aspect of the material criteria activities, and (c) a lack of awareness that design briefs usually outline material criteria expressed as sensorial characteristics, which are later translated by engineering into final material criteria used for the material selection process.

  • 19.
    Asbjörn Sörensen, Charlotte
    et al.
    Malmö Högskola, SWE.
    Jagtap, Santosh
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Warell, Anders
    Lunds Universitet, SWE.
    A shift from technical properties towards sensorial characteristics in product design education2017Ingår i: Proceedings of the 19th International Conference on Engineering and Product Design Education:: Building Community: Design Education for a Sustainable Future / [ed] Gulden T.,Pavel N.,Kovacevic A.,Buck L.,Bohemia E.,Berg A., Institution of Engineering Designers, The Design Society , 2017, s. 388-393Konferensbidrag (Refereegranskat)
    Abstract [en]

    The aim of this study is to evaluate a new pedagogic approach implemented in a compulsory materials course for product design students at bachelors level at ABC University. When developing a new curriculum for the material course, a decision was made to teach materials and production methods in a contextualized setting with emphasis on how students can deal with materials in a design process. Methods can be seen as mental tools that aid the design students in navigating complexity and offers them a structure to deal with unfamiliar territories. After an evaluation, some methods, guidelines and tools were selected to integrate in the compulsory materials course for the product design students, e.g. the Expressive-Sensorial Atlas [1], Meaning Driven Materials Selection [2] and the Material Driven Design method [3]. The implementation is made in two steps in order to test, evaluate and further develop a framework for teaching materials courses to product design students. The study evaluate the first step of implementation in general, and the implementation of the Material Driven Design method in particular. It is hoped that this research can contribute to further development of pedagogical approaches for teaching materials and production methods in a contextualized setting for product design students at bachelors level.

  • 20.
    Bafana, Ramzi
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för tillämpad signalbehandling.
    Zulfiqar, Zain
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för tillämpad signalbehandling.
    Solar Energy2014Studentuppsats (Examensarbete)
    Abstract [en]

    This thesis is about Photovoltaic (PV) cells and its stresses in various directions by calculating the power generated using solar cells under different conditions to improve its efficiency. Our research studies found that using multi-junction cells with larger substrates can increase the efficiency to some extent which in practice is limited to 43 percent. The experiment was conducted using ten solar cells each with an area of 20.9〖cm〗 ^2, where each cell gives 0.5 V and 0.4 A and a 1.25 Ω resistor was used. The cells were connected in series. Once, the PV cells were fixed horizontally and the other time tested in tilted position under same outdoor condition. The purpose of testing PV cells was to investigate the efficiency under above mentioned conditions. The data collected from the readings was used in calculation, and we have obtained from the calculations that horizontally fixed cells gave 4.8 percent efficiency whereas tilted cells gave 6.6 percent efficiency. Hence, the ratio showed that fixed cells produced 37.5 percent more power compared to horizontally fixed cells. Our other experiment consisted of testing PV cells under different temperature conditions that was done using a freezer and an oven for temperature variation and a tungsten bulb was used as a light source. The purpose of performing this experiment was to investigate how the efficiency of PV cells is affected under extreme conditions. Part of our thesis was also including studies and analysis of produced energy by the solar panel installed on the roof of “BTH” building in Karlskrona, Sweden. The data consisted of energy produced from February up to August 2014. The investigation also included finding the highest produced energy during these months. We have found that the highest energy was generated on the 1st of July which was 12.86 kWh. Furthermore, we went deep into investigation of the 1st of July to know exactly which hour of that day the highest energy was produced. The data showed that the highest produced energy was at 12:19 and 13:19 which was 2.03 kWh.

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  • 21.
    Barlo, Alexander
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Manopulo, Niko
    AutoForm Engineering GmbH, Switzerland .
    Sigvant, Mats
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Endelt, Benny
    Aalborg University, Denmark.
    Trana, Kristoffer
    Volvo Cars Stamping Engineering, Olofström.
    Investigation of a Bending Corrected Forming Limit Surface for Failure Prediction in Sheet Metals2019Ingår i: Forming Technology Forum, 2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Ensuring process feasibility is a high priority in the automotive industry today. Within theCAE departments concerning the manufacturing of body components, one of the most important areas ofinterest is the accurate prediction of failure in components through Finite Element simulations. This paperinvestigates the possibility of introducing the component curvature as a parameter to improve failureprediction. Bending-under-tension specimens with different radii are used to create a Bending CorrectedForming Limit Surface (BC-FLS), and a test die developed at Volvo Cars, depicting production-like scenariosby exposing an AA6016 aluminium alloy blank to a stretch-bending condition with biaxial pre-stretching, isused to validate the proposed model in the commercial Finite Element code AutoFormTM R8. The findings ofthis paper showed that the proposed BC-FLS approach performed well in the failure prediction of the test diecompared to the already in AutoFormTM R8 implemented max failure approach.

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  • 22.
    Barlo, Alexander
    et al.
    Volvo, SWE.
    Sigvant, Mats
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Endelt, Benny
    Aalborg Universitet, DEN.
    On the Failure Prediction of Dual-Phase Steel and Aluminium Alloys Exposed to Combined Tension and Bending2019Ingår i: IOP Conference Series: Materials Science and Engineering / [ed] VanDenBoogaard, T; Hazrati, J; Langerak, N, Institute of Physics Publishing , 2019, Vol. 651, nr 1, artikel-id 012030Konferensbidrag (Refereegranskat)
    Abstract [en]

    The interest in accurate prediction of failure of sheet metals in the automotive industry has increased significantly over the last two decades. This paper aims to evaluate two failure prediction approaches implemented in the commercial Finite Element code AutoFormplus R7.04; (i) the standard Forming Limit Diagram (FLD), and (ii) the Non-linear Forming Limit Diagram. The evaluation will be testing the two approaches accuracy on predicting failure of both an AA6016 aluminium alloy and a CR440Y780T-DP dual-phase steel alloy specimen exposed to combined tension and bending. Based on the findings of this study, it is concluded that neither of the evaluated approaches is able to accurately predict failure in both cases presented. © Published under licence by IOP Publishing Ltd.

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    On the Failure Prediction of Dual-Phase Steel and Aluminium Alloys
  • 23.
    Bashir, Farrukh
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Simplification of CAD Geometries to perform CEM Simulations2021Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The purpose of this study is to investigate small features in CAD geometries which have high influence on computational time and memory consumption during electromagnetic simulations using CAE software. Computational Electromagnetics (CEM) simulations of complex CAD geometries like passenger cars crash often simulations remain incomplete due to a lot of irrelevant details. The key to eliminating the limitations enumerated above is to remove irrelevant details in CAD geometries within the acceptable margin of accuracy. The maximum 5% percentage of error in accuracy during Computational Electromagnetics (CEM) simulations is compromised. CAD geometry is transferred into CAE geometry. The modification of geometry is done by removing irrelevant details to get optimal mesh and improve the computational time and memory consumption during simulations with ANSA and HYPERMESH software at their best potential. At the end, electromagnetic simulations are done on original and simplified CAD models in CST and in COMSOL. Only magnetic flux density distribution across the modified and unmodified CAD model by cut points 3D on different coordinate positions is analysed. The results are compared with quality of mesh in terms of accuracy and reduction in computational time and memory. The features in CAD geometries are identified, these features can be removed and computational time and memory consumption reduced with minimum loss of accuracy during simulation.

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  • 24.
    Bechtel, Nicola
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap.
    Bojko, Roman
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap.
    Völkel, Ronja
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap.
    Be in the Loop: Circular Economy & Strategic Sustainable Development2013Självständigt arbete på avancerad nivå (magisterexamen)Studentuppsats (Examensarbete)
    Abstract [en]

    Current human activities have a significant impact on the socio-ecological system, endangering this system’s capacity to support human civilization and biodiversity. Today’s linear industrial model can be seen as a main driver of this challenge, which implies a need for a model that uses less raw material and is more aligned with the cyclical nature of Earth. A concept that claims to provide such a model is Circular Economy (CE). This study analyses CE for its potential contribution to strategic sustainable development, and explores the barriers and enablers companies face in its implementation process. The main methodologies used for this research include the analysis of the concept by means of a conceptual framework and a Framework for Strategic Sustainable Development, as well as interviews with experts in related fields. The research exposed several gaps between CE and strategic sustainable development. The main barriers were found on a technological, legal, economic level, and at the behavioural level, i.e. the difficulty to change mindsets. Leadership, collaboration, the CE concept itself and customer behaviour were identified as important enablers. These results show that the concept is difficult to implement and that there is a need for a refined approach, which is easier to apply while leading closer towards sustainability.

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  • 25.
    Benaim, Andre
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Elfsberg, Jenny
    Volvo Construction Equipment.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Andreas
    The implementation of Innovation Metrics: A case study2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper explores the implementation process of an innovation measuring system prototype to support a heavy machinery multinational company to secure their innovative capability. In general,companies recognize the importance of becoming innovative to become, or remain, competitive on a global market. The case company decided to pilot a metric system that corresponds to the crucial factors to secure innovative capability and work with the stepwise improvement based on the assessment results.

    The methods are based on design-research approach and participatory action research. Interviews, surveys and observation were used, as well as, workshops were conducted to develop and follow up the implementation innovation measuring system.

    The findings explore topics and open questions related to metric selection, purpose and use of the selected indicators, as well as challenges related to the implementation of the metric system. Some of the conclusions question the viability of measuring project teams, as well as, it suggests the need for further research to clarify whether team metrics need to be develop in parallel to organizational ones.

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  • 26.
    Bentsrud, Herman
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Friction and material modelling in Sheet Metal Forming Simulations2020Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    I dagens bilindustri är plåtmetalformning en viktig process som kräver förberedelser som är tidskonsumerande och komplex när nya processer tillkommer. När nya metallslag kommer in till industrin, så utförs tester för att avgöra dess egenskaper och styrka. Denna testdata används till materialmodeller som kan approximera metallens beteende på ett noggrant sätt i en simuleringsmiljö. Den okända faktorn från dessa test är friktionskoefficienten på plåten. Programvaran Triboform är kapabel att göra en dynamisk friktionsmodel som beror på användar- och simuleringsdata. Problemen som uppstår vid framtagning av data är att det är tidskonsumerande och flera simuleringar måste göras för att bestämma friktionen. Volvo Cars använder sig av två modeller med olika fördelar, BBC 2005 och Vegter 2017.Syftet med detta arbete är att jämföra de två materialmodellerna med Triboform modeller implementerat för att se om de påverkar noggrannheten i simuleringar och sedan förse rekommendationer för vilken modell passar bäst för olika fall. Några sidojobb i studien som görs är en jämförelse med gamla Vegter modellen, ett test med en modell som är känslig för töjningshastighet och test med att implementera Triboform modellen på alla pressverktyg.Detta utförs med att implementera Triboform modellerna i Autoform och köra en simulering på ett LDH-test med båda materialmodeller och jämföra resultaten med experimentell data för flera olika metaller. Data som skall jämföras från LDH-testet är första och andra huvudtöjningen i två vinkelräta sektioner i fyra processsteg och stämpelkraften genom hela processen. Modellerna kommer evalueras genom hur de lyckas imitera töjningens beteende och hur den estimerar stämpelkraften.Resultaten pekar mot en förbättring när Triboform är implementerat i simuleringar för de flesta metaller som ingår i testen och BBC 2005 är den model som föredras om det finns tillgänglig biaxiel spänning data från tester, Vegter 2017 är en duglig modell om dessa data inte finns. Vegter 2017 är dock inte ett bra alternativ när det kommer till jämförelse av töjning och stämpelkraften för aluminium. Sidojobb med gamla Vegter visar att den nya Vegter 2017 inte är en direkt förbättring med hänsyn till noggrannheter av krafter och töjningar.Arbetet visar att en dynamisk friktionsmodel kan förbättra prediktering av töjningar i simuleringar. Om det finns biaxiel data för metallen eller om det gäller att simulera aluminium är BBC 2005 det bättre altermativet, om det endast finns dragprovsdata för metallen så är Vegter 2017 duglig för vissa fall.

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  • 27.
    Berglind, Robin
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Impact of Sidewall Pressure on High Voltage Cables2018Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    When a high voltage cable is transported throughout factory it is affected by sidewall pressure in cable bends between the roller supports and the cable. The problem is when the sidewall pressure is too high it will deform the cable which can have a negative impact on the conductivity of the cable. The roller supports can also get damaged because of fatigue. These negative consequences are the subject to exploration by implementing known analytical solution of contact mechanics developed by Hertz together with finite element analysis and experimental testing.

     

    Two possible methods of measuring the radial force is studied to be able adjust the roller supports positions to reduce the sidewall pressure on the cable. The first one is to use the pressure film to determine the radial force. The second one is to by measuring the compression in cable to thereafter translate it to radial force by having the relation between compression and radial force for the specific cable.

     

    Two different types of high voltage cables, a direct current (DC) cable and an alternating current (AC) cable is studied by using finite element method and experimental tests to see the relation between the compression and radial force in the cable. Also in these experimental tests the pressure films are used and evaluated to see if this measuring technique combined with Hertzian’s theory make it possible determining the radial force.

     

    For the method of using the pressure films to determine the radial force the result shows it is difficult to translate the pressure from the films to radial force for a high voltage because of the cable’s armouring wires. The conclusion about these the pressure films is that they are good to use to describe the compression and can be used as relative measurement between the rollers but not for determine the radial force.

     

    The result shows it is a possible to describe relation between compression and radial force for a high voltage cable and use this information to determine the radial force by measuring the compression. But the conclusion is that it is ineffective and less accurate way of measuring the radial force.

     

    These results from this thesis are important for further research within the area and they help creating a greater understanding of sidewall pressure related problems in cables.

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  • 28.
    Bergschöld, Patrik
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Källgren, Martin
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    How to motivate employees in order to succeed with Open Innovation Projects2014Självständigt arbete på avancerad nivå (magisterexamen)Studentuppsats (Examensarbete)
    Abstract [en]

    Today, internal resources are limited and could not master all new technologies that have emerged during the last few decades. The complexity and depth needed is too costly to maintain in house so the internal innovation functions have to be decreased as they do not generate enough return on their investment. Companies need to find new ways to meet their growth targets and one way is to leverage their innovation capabilities by using external innovations and not just rely on internal innovation. But changing the game from internal closed to open innovation comes with challenges when it comes to company culture and how the employees adapt. Open innovation can create conflicts between the internal team and external team. The internal employee might feel that their work is taken from them, increasing the risk of losing their jobs and specialists might become skeptical to an alternative solution in an innovation. To harvest the full advantage of open innovation the internal employees need not to resist open innovation and become motivated to participate and work with open innovation according to a best practice. This has led us to the Research Question: How could employees’ motivation be enhanced in Open Innovation Projects? The purpose of this paper was to identify key motivational factors for employees in open innovation projects as well as what can be done to enhance motivation in open innovation. Our hope is that the findings can be utilized in making open innovation projects more efficient and in the end contributing to a more efficient use of resources and a stronger economy. We have done a multiple case study with six European companies working with open innovation. Ten in-depth interviews have been conducted with employees at these companies. Based on extensive motivational theory like intrinsic and extrinsic motivational factors, we have analyzed the motivations of the employees with qualitative methodology. Our findings show that to succeed with open innovation there are certain factors that stand out particular to open innovation, while other factors are relevant to all types of innovation. In order to fully exploit the potential of open innovation you need to find employees that are motivated by working with external contacts and celebrate collaboration. The employees need to have self-awareness that open innovation pose an opportunity to take advantage of external competence for his or her development as well as the opportunity develop better and faster products or service for the company. To enhance motivation among the employees each organization can facilitate open innovation centrally to reduce to resistance to undertake the effort to change way of working. Another key area to enhance motivation for open innovation is recognition of employees.

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  • 29. Bergström, Mattias
    et al.
    Ericson, Åsa
    Larsson, Madelene
    Nergård, Henrik
    Larsson, Tobias
    Luleå Technical University.
    Renström, Boo
    Needs as a basis for design rationale2008Ingår i: / [ed] Dorian Marjanovic, Mario Storga, Neven Pavkovic, Nenad Bojcetic, University of Zagreb, Dubrovnik, Croatia: University of Zagreb , 2008Konferensbidrag (Refereegranskat)
    Abstract [en]

    A basic principle for Needfinding [Faste, 1987; Patnaik & Becker, 1999] is that designers and engineers should interact directly with users to get direct insights into the user domain. Needfinding is not a new phenomena, it is almost forty years ago since the process was adopted at Stanford University’s product design program [Patnaik & Becker, 1999]. As the name, Need-finding, implies, this is an intertwined approach to find needs which are not readily articulated by users. The application of a Needfinding process offers qualitative methods to make those needs visible early on in product development. In fact, the process has become more interesting during recent time, since qualitative methods have gained more acceptance outside the academic realm [ibid.].The word qualitative indicates that what are sought for are qualities such as people’s experiences, what they perceive or interpret into a situation [Miles & Huberman, 1994; Patton, 2002]. Such data is contextually dependent, i.e., it must be generated in the context in which the phenomena occur. Besides context, people’s activities, behaviours and goals are important to observe and learn from. The objectives, for applying Needfinding, are to make the identification of needs and design a seamless effort, as well as an interest to identify opportunities to innovations. Needs last longer than any solution [Patnaik & Becker, 1999], since they are grounded in people’s activities. The solution and product that might meet such needs change over time. One example is how to store computer data, the products which satisfy the need has changed from, e.g., punch cards, magnetic tape, floppy discs [ibid.] to USB-flash memories. A guiding methodology in Needfinding is a flexible process, which is adapted to the task at hand [Kelley, 2001]. Such a process is conveyed in a few basic steps and, builds on a ‘philosophy’ which permeates all activities in order to adapt the process according to the project. Therefore, the designer’s ability to rely on such a process depends on familiarity with a number of methods for observations and interviews, as well as an aptitude for socio-technical skills. Hence, the purpose in this paper is to present and reflect on methods used in a running development project to identify needs in a product development project. This is done to contribute to the advancement of a need driven product development process. The disposition of this paper is as follows. First, our approach in studying the need identification activities is presented. Second, a theoretical frame for need identification and design is presented, i.e., Needfinding [Patnaik & Becker, 1999]. Third, the practice of finding needs is outlined and discussed.

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  • 30.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    A Reverse Engineering Role-Play to Teach Systems Engineering Methods2019Ingår i: Education Sciences, ISSN 2227-7102, Vol. 9, nr 1, artikel-id 30Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Students engaged in systems engineering education typically lack experience and understanding of the multidisciplinary complexity of systems engineering projects. Consequently, students struggle to understand the value, rationale, and usefulness of established systems engineering methods, often perceiving them as banal or trivial. The paper presents a learning activity based on a three-stage reverse engineering role-play developed to increase students’ awareness of the importance of correctly using systems engineering methods. The activity was developed and integrated in the Systems Engineering course given at Blekinge Institute of Technology. Its effectiveness was analyzed through semistructured self-reflection reports along with two editions of the course. The results showed the development of students’ understanding of how to use systems engineering methods. In particular, the students realized the need to deliver detailed and easy-to-read models to the decision makers. This result was in line with the achievement of some of the intended learning outcomes of the course.

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  • 31.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    MITIGATING UNCERTAINTY IN CONCEPTUAL DESIGN USING OPERATIONAL SCENARIO SIMULATIONS: A DATA-DRIVEN EXTENSION OF THE EVOKE APPROACH2023Ingår i: Proceedings of the Design Society / [ed] Otto K., Cambridge University Press, 2023, Vol. 3, s. 2665-2674Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper presents an approach where the iterative replication of Discrete Event Simulations on future operational scenarios is used to derive data-driven design merit functions. The presented contribution proposes an extension of the EVOKE (Early Value Oriented Design Exploration with Knowledge Maturity) approach determining when and how the experience-based judgment about maximization, minimization, optimization, and avoidance functions, correlating value drivers and quantified objectives, can be substituted by data-driven mathematical functions obtained by scenarios simulations. The approach is described through a simplified case concerning the development of autonomous electric vehicles to complement the public transport system in the city of Karlskrona in Sweden. The consideration of value drivers and quantified objectives presented is meant to support a preliminary screening of potential design configurations to support the definition of high-level product and system-related functional requirements, to be run before a more detailed conceptual design analysis. © The Author(s), 2023. Published by Cambridge University Press.

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  • 32.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Amnell, Henrik
    Isaksson, Ola
    Value modelling in aerospace sub-system design: linking quantitative and qualitative assessment2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper presents a prototype of a value model where engineering design teams can play with costand value data in a semi-structured way. In particular, the value model serves to facilitatecommunication of multidimensional information during preliminary design analysis and to visualizesuch information in a unique environment. The model first automatically generates, from the output ofa computer-based simulation, a quantitative assessment of manufacturer costs and customer costsaving of a set on different configuration of the same design concept. Second, it couples to the resultsa qualitative assessment of concept risks and product and process commonalities. Third, it allows anassessment of the concept impact on customer “ilities” (maintainability, survivability, scalability,flexibility). The model has been developed in collaboration with an aerospace sub-systemmanufacturer and it ultimately aims to enable the maturation of the knowledge about cost and valueaspects among the design team since the preliminary stages of design.

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  • 33.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    A 10-year teachers' journey toward CDIO: lessons learned for dealing with students, companies, and yourself2023Ingår i: Bidrag från den 9:e utvecklingskonferensen för Sveriges ingenjörsutbildningar / [ed] Joel Midemalm, Amir Vadiee, Elisabeth Uhlemann, Fredrik Georgsson, Gunilla Carlsson- Kvarnlöf, Jonas Månsson, Kristina Edström, Lennart Pettersson, Pedher Johansson, Mälardalens universitet, 2023, s. 211-220Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper summarizes the experiences of working for a decade to promote the transition of courses toward the CDIO framework. It presents a list of lessons learned when applying the CDIO principles in master-level classes in the field of Mechanical Engineering. The paper aims to formalize operational guidelines, serving as a platform for further discussion and as a set of practical recommendations for teachers and educators initially redesigning their courses toward a more CDIO-oriented structure. The paper initially presents the rationale formoving toward CDIO and describes where and how data were collected. Further, it lists several lessons learned for teachers on (1) how to support students in maximizing their learning opportunities in a CDIO context, (2) how to manage the relationship and engagement with company partners, dealing with expectations, trust, flexibility, and visibility.

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  • 34.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Modeling ‘ilities’ in early Product-Service Systems design2019Ingår i: Procedia CiRP / [ed] Huang, GQ; Qu, T; Thurer, M; Xu, S; Khalgui, M, Elsevier, 2019, Vol. 83, s. 230-235Konferensbidrag (Refereegranskat)
    Abstract [en]

    Product-Service Systems, like all complex systems, are vulnerable to unpredictable environmental changes that can seriously undermine their ability to continuously deliver value to customers. The long-term consequences of volatile markets, unanticipated technologies, and unpredictable changes in society must be captured, modeled and communicated to decision makers since the earliest stages of the design, so to identify sustainable PSS solutions able to deliver value for years or decades to come. The paper analyses the problem of PSS changeability from the perspective of established medium-large product manufacturers facing the transition toward result-oriented PSS offers. Building on established literature in the systems engineering field, the paper proposes the definition of the changeability criteria, also named ‘ilities’, that are relevant to consider for PSS engineers in the early stages of design. Furthermore, the paper describes a systematic framework for assessing ilities in early PSS design, elaborating on technological enablers for ilities modeling.

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  • 35.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Massimo, Panarotto
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Christian, Johansson
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tobias, Larsson
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Expanding Value Driven Design to meet Lean Product Service Development2015Ingår i: 7TH INDUSTRIAL PRODUCT-SERVICE SYSTEMS CONFERENCE: IPSS, INDUSTRY TRANSFORMATION FOR SUSTAINABILITY AND BUSINESS / [ed] Xavier Boucher and Daniel Brissaud, Elsevier, 2015, Vol. 30, s. 197-202Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper presents a discussion about gaps and opportunities for cross-pollination between Value Driven Design and Lean Product Service Development to promote the use of value-driven method and tools since the preliminary design stages. In particular the paper discusses how methods and tools developed in Value Driven Design have the potential to be applied in the preliminary design stage in the context of Lean Product Service Development. The paper concludes by defining a research area on Value Innovation method and tools for preliminary Lean Product Service Development.

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  • 36.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Data Mining in Product Service Systems Design: Literature Review and Research Questions2017Ingår i: Procedia CIRP / [ed] Tim C. McAloone, Daniela C.A. Pigosso, Niels Henrik Mortensen and Yoshiki Shimomura, Elsevier, 2017, Vol. 64, s. 306-311Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper presents a literature review about data mining applications in Product/Service-Systems (PSS) design. A systematic literature review, combined with snowballing techniques, has been run to identify relevant contributions in the area. The analysis has focused on the categorization of the contributions according to their impact on the PSS design process and according to their theoretical or empirical nature. A picture of the different research achievements for each stage of the PSS design process have been drawn, identifying the research gaps in respect to the challenges of PSS design. Based on the analysis the paper proposes a set of research questions for each PSS design stage with the intent of facilitating the application of data mining techniques in PSS design, and ultimately push forward the state of the art.

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  • 37.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Wall, Johan
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Johansson Askling, Christian
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    MODEL-DRIVEN PRODUCT SERVICE SYSTEMS DESIGN: THE MODEL-DRIVEN DEVELOPMENT AND DECISION SUPPORT (MD3S) APPROACH2021Ingår i: Proceedings of the Design Society 2021, Cambridge University Press , 2021, s. 2137-2146Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper presents a Model-Driven approach for Product-Service System (PSS) Design promoting an increased digitalization of the PSS design process based on the combination of data-driven design (DDD) activities and value-driven design (VDD) methods. The approach is the results of an 8-year long research profile named (omitted for blind review) featuring the collaboration between (omitted for blind review) and nine industrial companies, in the field of PSS Design. It combines VDD models and the supporting data-driven activities in the frame of PSS design and aligns with the product value stream and the knowledge value stream in the product innovation process as described by Kennedy et al. (2008). The paper provides a high-level overview of the approach describing the different stages and activities, and provides references to external scientific contributions for more exhaustive descriptions of the research rationale and validity. The approach is meant to ultimately drive the development and implementation of a simulation environment for cross-functional and multi-disciplinary decision making in PSS, named Model-Driven Decision Arena, describe in the concluding part of the paper.

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  • 38.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Machchhar, Raj Jiten
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Frank, Bobbie
    Volvo Construction Equipment SWE.
    Digital Twins of Operational Scenarios in Mining for Design of Customized Product-Service Systems Solutions2022Ingår i: Procedia CIRP, Elsevier, 2022, s. 532-537Konferensbidrag (Refereegranskat)
    Abstract [en]

    The paper presents an approach, based on the development of digital twins, to support the transition toward electromobility and autonomy in the mining industry, by supporting the design space exploration of future operational scenarios based on different construction equipment and mining site configurations. With such an intent, the paper presents an approach combining systems and systems-of-systems simulations to run trade-off analysis based on different product-service systems (PSS) configurations. Additionally, the paper integrates the "operational context"variables in PSS design simulations to create a digital twin of a "mining operational scenario"customizable for the specific configurations of each mine. The paper exemplifies the proposed approach by contextualizing in a reference mining site describing how the multi-dimensional simulations have enabled PSS trade-off analysis and PSS sensitivity analyses, and how operational context variables are integrated into the digital twin of the operational scenario. © 2022 The Authors.

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  • 39.
    Bertoni, Alessandro
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Marco, Bertoni
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Massimo, Panarotto
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Christian, Johansson
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Value-driven product service systems development: Methods and industrial application2016Ingår i: CIRP - Journal of Manufacturing Science and Technology, ISSN 1755-5817, E-ISSN 1878-0016, Vol. 15, s. 42-55Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In recent times a service-dominant logic is permeating the design of complex systems. However, in spite of their appeal, initiatives such as Product Service Systems (PSS) have not become mainstream, and methods are lacking to support this transition. This paper argues that methodological guidance, as well as tools for decision support, may be found in the research field of Value Driven Design (VDD), which originates in the realm of Systems Engineering. The paper objective is to elaborate on gaps and opportunities for cross-pollination between VDD and PSS. The results of a systematic review of methods and tools for design decision support highlight the opportunity for introducing optimization models derived from VDD in the PSS design process, while the latter can enrich VDD research with a more qualitative value assessment logic. The paper summarizes this integration in a methodological approach, and exemplifies its application in case studies mainly from the aerospace and road construction equipment sector.

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  • 40.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Boosting Value Co-creation in Design Through the Product-Service System Digital Twin: Questions to Be Answered2022Ingår i: Collaborative Networks in Digitalization and Society 5.0 / [ed] Camarinha-Matos, L.M., Ortiz, A., Boucher, X., Osório, A.L., Springer Science+Business Media B.V., 2022, Vol. 622, s. 592-602Konferensbidrag (Refereegranskat)
    Abstract [en]

    Digital Twins (DTs) are among the most hyped technologies of the 2020 s. Yet, the research dealing with the use of DTs in early Product-Service Systems design remains insufficiently systematized. Based on the findings of multiple-case studies in the Swedish manufacturing industry, the objective of this paper is to collect and present a set of ‘questions that need to be answered’ to foster the development and utilization of DTs in the PSS realm. The results highlight how the DTs should be composed of several layers to boost value co-creation in design, in a way to incorporate the digital ‘counterpart’ for more abstract entities, from processes to human behaviors to more intangible assets. © 2022, IFIP International Federation for Information Processing.

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  • 41.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Introducing Sustainability in Value Models to Support Design Decision Making: A Systematic Review2017Ingår i: Sustainability, E-ISSN 2071-1050, Vol. 9, nr 6, artikel-id 994Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Manufacturing organizations shall recognize sustainability as a business occasion to capitalize on, rather than an undesirable pressing situation. Still, empirical evidence shows that this opportunity is hard to capture and communicate in global strategic decisions, through planning by tactical management, to daily operational activities. This paper systematically reviews the modeling challenges at the crossroad of value and sustainability decisions making, spotlighting methods and tools proposed in literature to link sustainability to customer value creation at strategic, tactical and operational level. While statistical results show that the topic of sustainability and value modeling is trending in literature, findings from content analysis reveal that recent attempts to promote a value-based view in the sustainability discussion remain at a strategic level, with most of the proposed indicators being suited for managerial decision-making. The lack of support at operational level points to the opportunity of cross-pollinating sustainability research with value-centered methodologies originating from the aerospace sector. The Value Driven Design framework is proposed as main hub from which to derive models supporting engineers and technology developers in the identification of win-win-win situations, where sustainable improvements are aligned with business advantages.

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  • 42.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Multi-Criteria Decision Making for Sustainability and Value Assessment in Early PSS Design2019Ingår i: Sustainability, E-ISSN 2071-1050, Vol. 11, nr 7, s. 1952-1979, artikel-id 1952Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Sustainability is increasingly recognized as a key innovation capability in the organization. However, it is not always evident for manufacturers how sustainability targets shall be “mixed and matched” with more traditional objectives—such as quality, time, cost, and performances—when designing and developing solutions. The emergence of “servitization” and product-service systems (PSS) further emphasizes the need for making thoughtful trade-offs between technical aspects, business strategies, and environmental benefits of a design. The objective of this paper is to investigate how multi-criteria decision making (MCDM) models shall be applied to down-select PSS concepts from a value perspective, by considering sustainability as one of the attributes of a design contributing to the overall value of a solution. Emerging from the findings of a multiple case study in the aerospace and construction sector, the paper presents a five-step iterative process to support decision making for sustainable PSS design, which was further applied to design an electrical load carrier. The findings show that the proposed approach creates a “hub” where argumentations related to “value” and “sustainability” of PSS solution concepts can be systematically captured in a way that supports the discussion on the appropriate quantification strategy.

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  • 43.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Towards Digital Immersive Experiences for Collaborative Value Co-creation in Design2023Ingår i: Collaborative Networks in Digitalization and Society 5.0: 24th IFIP WG 5.5 Working Conference on Virtual Enterprises, PRO-VE 2023, Valencia, Spain, September 27–29, 2023, Proceedings, Springer Science+Business Media B.V., 2023, s. 193-206Konferensbidrag (Refereegranskat)
    Abstract [en]

    The metaverse, which is often described as featuring a range of technologies for Extended Reality (XR) to consume and digest information from large and complex Digital Twins (DTs), is often discussed as one of the pillars of Industry 5.0 transformation. Immersive computer-generated environments based on DT and XR are highlighted as cornerstone technologies for the future of product and system design. While they are expected to become a commodity in the engineering toolbox in the next 20 years, little is known about how to set up and implement such environments to maximize innovation and collaboration capabilities in design. This article discusses the high-level gaps that remain before the vision of the metaverse in design is realized. It further draws a roadmap, based on four major tracks, that pinpoints research areas, methodological approaches and capabilities needed to develop and realise digital immersive experiences for collaborative value co-creation in design.

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  • 44.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    WORK INTEGRATION SOCIAL ENTERPRISES: A TESTBED FOR CHALLENGE-BASED LEARNING?2019Ingår i: Proceedings of the 15th international CDIO Conference, Aarhus university , 2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Work Integration Social Enterprises (WISE) are a particular enterprise form permeated by a so-called ‘double business idea’. Besides the commercial imperative of providing product and services, WISE offer employment and training opportunities for individuals considered less able to compete in mainstream labour markets. The paper argues that this multiple goal structure makes WISE an ideal testbed for Challenge-Based Learning (CBL). The latter deepens both problem-based learning and CDIO, by featuring open-ended problems that stress an entrepreneurial, value-driven and sustainable approach to problem formulation and decision-making. The aim of this paper is to describe how real-life design projects conducted in collaboration with WISE take CBL a step forward compared with those involving more ‘traditional’ enterprise forms. Evidence is gathered along 4 main lines of thought, which are: 1) iterative problem formulating and designing; 2) entrepreneurial mindset and of value-driven learning; 3) social sustainability-aware designing; and 4) social-constructed learning. The findings indicate that WISE-based design experiences bring forward additional characteristics compared with more ‘traditional’ engineering ones. Students are able to expand the scope and depth of their problem identification and formulation activities, due to the continuous dialogue with a broad range of stakeholders, enthusiasts, and volunteers. They become more aware of the multifaceted meaning of the word ‘value’ in engineering, realizing the existence of competing value systems for the design problem. Eventually their decision-making activities emphasizes the pursuit of different goals and objectives (e.g., technical feasibility, business viability, and sustainable development) in the design process.

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  • 45.
    Bertoni, Marco
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Designing solutions with the product-service systems digital twin: What is now and what is next?2022Ingår i: Computers in industry (Print), ISSN 0166-3615, E-ISSN 1872-6194, Vol. 138, artikel-id 103629Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Digital Twins (DT) are of particular interest in the domain of Product-Service Systems (PSS), to predict hardware availability, to inform about the needed features of new solutions, and to forecast the expected performances of new configurations in operation. The aim of this paper is to shed light on the extent to which ‘twins’ are applied today across the PSS life cycle, and to spotlight the ability of DT-related case studies to capture a full value perspective vs. simply attempting to represent hardware and services in the digital realm. By means of a systematic literature review combined with a mapping study, the paper reveals how only a minimal part of the existing literature is able to demonstrate how real-time physical-to-virtual and virtual-to-physical connections can be used to improve the design of servitized solutions. The analysis shows how contributions in the topic are mostly proposing frameworks and methods, as opposed to models and tools, as well as how ‘evaluation’, ‘validation’ tasks are largely neglected. As a result, the paper proposes a specialized definition of the PSS DT, together with a set of research questions that need to be answered to empower the engineering teams with relevant DT for PSS design.

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  • 46.
    Bertoni, Marco
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Iterative value models generation in the engineering design process2019Ingår i: Design Science, Vol. 5, artikel-id e18Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Value models are increasingly discussed today as a means to frontload conceptual design activities in engineering design, with the final goal of reducing cost and rework associated with sub-optimal decisions made from a system perspective. However, there is no shared agreement in the research community about what a value model exactly is, how many types of value models are there, their inputoutput relationships and their usage along the engineering design process timeline. Emerging from five case studies conducted in the aerospace and in the construction equipment industry, this paper describes how to tailor the development of value models in the engineering design process. The initial descriptive study findings are summarized in the form of seven lessons learned that shall be taken into account when designing valuemodels for design decision support. From these lessons, the paper proposes a six-step framework that considers the need to update the nature and definition of value models as far as new information becomes available,moving from initial estimations based on expert judgment to detailed quantitative analysis.

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  • 47.
    Bertoni, Marco
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Measuring Experiential Learning: An Approach Based on Lessons Learned Mapping2020Ingår i: Education Sciences, E-ISSN 2227-7102, Vol. 10, nr 1, artikel-id 11Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Fostering ‘experiential learning’ in real-life situations is a critical task for engineering educators when creating constructively aligned learning activities. The paper proposes an approach to measure the students’ perception of learning in Conceive-Design-Implement-Operate activities conducted outside the classroom. The approach is based on the opportunity of gathering and analyzing lessons learned from the student reflection reports at the end of a team-based innovation project performed in collaboration with company partners. The approach is intended to provide a basis for the future development of innovation projects with engineering students, supporting the definition of learning outcomes that are relevant for the CDIO Syllabus 2.0, and of constructively aligned learning experiences. The paper exemplifies the approach with regards to a master course named Value Innovation and presents the findings obtained at the third and second level of the CDIO Syllabus 2.0. The results of the course implementation show how short team-based innovation projects largely contributed in developing social and communication-related skills in engineering students, going beyond the mere application of their technical skills.

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  • 48.
    Bertoni, Marco
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Models for Value-driven engineering design2016Ingår i: Proceedings of the International Design Conference / [ed] Marjanovic, D; Storga, M; Bojcetic, N; Skec, S, DESIGN SOC, UNIV STRATHCLYDE , 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    Nowadays, it is a great challenge to understand what models shall be used to iteratively translate customer desires into terms that are meaningful for engineering design decision-making. This paper proposes a framework illustrating the iterative evolution of model-based enablers for value during conceptual system design. The framework is developed from the analysis of four case studies in the Swedish manufacturing industry. The paper discusses the learning from the cross-case study, and elaborates on how value models may complement existing Systems Engineering practices.

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  • 49.
    Bertoni, Marco
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Nonlinear Quality Function Deployment: an experimental analysis2017Ingår i: DS87-4 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON ENGINEERING DESIGN (ICED 17), VOL 4: DESIGN METHODS AND TOOLS / [ed] Maier, A; Skec, S; Kim, H; Kokkolaras, M; Oehmen, J; Fadel, G; Salustri, F; VanDerLoos, M, The Design Society, 2017, s. 99-108Konferensbidrag (Refereegranskat)
    Abstract [en]

    Quality Function Deployment (QFD) is a common model to frontload engineering design activities with, linking the characteristics of a product vs. the voice of the customer using linear relationships. This approximation is often claimed to be misleading when dealing with the design of complex engineering systems. The paper presents the results of experimental activities aimed at verifying usability and effectiveness of nonlinear functions as extension of the QFD logic. A total of 40 experiments was conducted in a given design episode, involving 139 participants, to analyse the trade-off between the benefit of introducing nonlinearity vs. effort and cost triggered by increased complexity in the modelling. The results show that nonlinear functions, while improving the granularity of the QFD mapping, keeps the method simple enough to work as ‘boundary object’ in cross-functional design teams, irrespectively from the experience of design team members. The experiments also highlight how users’ cognitive attention in the task is dependent from the format by which nonlinear merit functions are presented.

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  • 50.
    Bertoni, Marco
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Alessandro
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Eres, Murat Hakki
    University of Southampton, GBR.
    Value Driven Design revisited: emerging modelling concepts and applicatons2019Ingår i: Proceedings of the Design Society: International Conference on Engineering Design, Cambridge University Press, 2019, s. 2407-2416Konferensbidrag (Refereegranskat)
    Abstract [en]

    Extended product warranties, leasing, and pay-per-use schemes are few examples of how manufacturing companies are shifting their focus from selling products to offering “solutions”, combining products and services to maximise customer value. The idea of optimising a system towards the best ‘value’ is both "intuitive and sensible", and processes such as Value Driven Design (VDD), have been proposed to supplement traditional engineering design methodologies. Yet, value-driven initiatives struggle to communicate their benefits and to demonstrate how value models can solve actual problems. The aim of this paper is to shed light on the evolution of the VDD toolbox, mapping research clusters, applications and case studies from the perspective of how much (and how well) recent contributions have answered the five top-level questions of the VDD research agenda published in 2012. The results of the systematic literature review reveal the emergence of innovative modelling constructs, methods, and tools that help VDD in taking a leap forward in supporting organizations and teams in achieving the long-sought objective of designing for 'value'.

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