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  • 251. Ola, Isaksson
    et al.
    Tobias, Larsson
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Michael, Kokkolaras
    Marco, Bertoni
    Simulation Driven Design for Product-Service Systems2013In: The Philosopher's Stone for Sustainability / [ed] Yoshiki, Shimomura; Koji, Kimita, Berlin, Heidelberg: Springer , 2013, p. 465-470Chapter in book (Refereed)
    Abstract [en]

    Total Offers, Functional Products, and Integrated Product Service Engineering reflect a shift toward service offers from manufacturing industry captured within the term Product-Service Systems (PSS). Manufacturing companies have traditionally focused design and development activities on realizing technical and engineered aspects of physical artifacts, while PSS include deeper understanding of customers’ expectation, needs and perceived value, hence calling for modelling of additional aspects. The change in early design processes and the effects on virtual modelling of product properties are discussed in this paper through aerospace industry examples to clarify ‘parameters of change’, giving suggestions for a simulation driven design (SDD) approach.

  • 252.
    Olivier, Hervé-Bazin
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Carlo, Iacovino
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Hanzi, Ren
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Applying the Framework for Strategic Sustainable Development to Water management2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    A strategic management of water is integral for any society aiming at moving towards sustainability. This thesis aims to provide a common understanding of how water management should be considered within sustainability constraints, using ‘backcasting’ from basic sustainability principles as a compass. With a common language, a constructive dialogue is then possible to unify all stakeholders to move together towards sustainability. To answer the research question “How can an interaction with water stakeholders be strategically developed to progress toward the service of water in a sustainable society”, a methodology based on Sustainability Life Cycle Assessment, the Template for Sustainable Product Development and Multi-Stakeholder Platforms has been utilised within one domestic and one industrial water user case study in Blekinge, Southern Sweden. In this locality, water is regarded as abundant in volume. Yet it was revealed that what is consumed by society is not water as such; but the purity of water. Within this context, opportunities to move towards sustainability have arisen and the case study organizations were able to utilise improvements in reporting and operations. Economic activity such as new infrastructure, pollutant trading schemes and product accreditation are amongst the many concepts identified as potential steps towards the service of water in a sustainable society.

  • 253. Ostrovsky, L. A.
    et al.
    Rudenko, Oleg
    What Problems of Nonlinear Acoustics Seem to be Important and Interesting Today2008Conference paper (Refereed)
    Abstract [en]

    The purpose of this presentation is to briefly outline the progress and achievements that have occurred in some areas of nonlinear acoustics during recent years. © 2008 American Institute of Physics.

  • 254.
    Pan, Bingbing
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Shizhou, Yanni
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Crone, Carl
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Preserving Intangible Cultural Heritage to Facilitate a Transition towards Sustainability: A Case Study of Tibet's Tourism Industry2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The purpose of this paper is to give suggestions for how to preserve intangible cultural heritage (ICH) towards sustainability. We will use Tibet as a case study. Understanding the importance of ICH for tourism, we scrutinize ICH through the lens of strategic sustainable development (SSD) and use tourism as a leverage point to enter into a real life situation. ICH is the root of all cultural expression. Without guarding ICH there is little meaning to the physical culture that remains and, ultimately, tourism declines. ICH is a new topic and there is little research and few ideas as to how to guide its preservation. We offer recommendations which include identifying the stakeholders, educating them, adequate marketing research especially in tourism, investing on technology of dematerialization and searching substitutions under the guidelines of the Golden Rule within the social sustainability context. Our contributions is to build a vision of success for preserving Tibetan ICH via tourism within the constraints of the four sustainability principles, and then demonstrate some prioritized actions in order to develop towards sustainability.

  • 255.
    Panarotto, Massimo
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Capturing Value in Conceptual PSS Design: Perspectives from the Automotive Supply Chain2013Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Manufacturing companies have traditionally focused their design and development activities on realizing technical and engineered aspects of physical artifacts based on performance requirements. The ever-changing business climate, with its increased pace during the past decades, has forced industries to continuously innovate their approach toward the development of new products. Pressured also by global competition, manufacturing companies need to reconsider the traditional concept of realizing value via goods production, and shift towards realizing value through product-service combinations. Companies have begun to recognize that gaining competitive advantage and expanding market shares is not achievable purely through continuous technical improvements. Rather, it is necessary to develop a closer relationship to the customer to gain a deeper understanding of expectations, needs, and perceived value. From a development perspective, the overarching problem within complex systems such as those in which cars, aircraft, and excavators are manufactured, or healthcare is provided, is that the focus on customer value is likely to become blurred since it is difficult to understand the impact a change in any single component in the overall system has on value, and to determine a new function’s impact on future scenarios. The main goals of this thesis are to provide an understanding of key challenges when considering the value different design alternatives provide in the conceptual phases of product development taking the automotive industry as case study, and to explore how to support a multi-disciplinary design team in making value-conscious decisions when dealing with new product-service offerings. The research approach has involved data collection through participation in, and facilitation of, product-service design workshops in the automotive industry. Also, it has involved follow-up meetings and interviews, as well as a review of literature on state-of-the-art methods in early conceptual design phases, which describes the advantages and disadvantages of the different frameworks. The primary finding of the study is that determination of the impact of different PSS design options on customer value becomes more challenging since new elements are introduced (e.g., new business models and services). The design team requires more holistic competences in order to more fully understand changing contexts; and new methods and tools are needed in order to establish a base to define, discuss and assess what “uncontested customer value” is, and link it to the different product-service elements of the system. Secondly, this thesis proposes a conceptual approach for value simulation and assessment of different design options, where the iterative use of personas and scenario generation is combined with value modeling and computer-based simulation techniques, enabling a quick “what-if” analysis of the various options, facilitating the identification of promising combinations of product and service elements that provide higher customer value.

  • 256.
    Panarotto, Massimo
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Larsson, Tobias
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Towards Value Driven Simulation of Product-Service Systems: A Conceptual Scenario2012Conference paper (Refereed)
    Abstract [en]

    The paper discussed potentials and existing challenges of considering Value when designing a Product-Service System offering. The main problem has been identified on having new methods and tools that can help designers to consider every design option from a value perspective (possibly based on a longer timespan). Nowadays mainly revenue, costs and technical risks analysis are taken into consideration and boiled down into monetary terms in a rather short period. This often caused the “killing” of more radical ideas (that could potentially bring more benefits if seen in a longer time perspective) at the various decision gates during the project. So at the end, everybody talks about value, but actually money is what people look at in the end. The paper discussed how a Value simulation approach can provide benefits in terms of compared different design solutions from a Value perspective. With such an approach it is possible to take into consideration the value of aspects like intangibles perceived by the customer (provide the best customer experience as possible) or knowledge gained by the company during the business. An example has been presented in order to discuss how Value simulation can be effectively a strength when dealing with the wider design space that the PSS development implies. Another main benefit is that such a tool will enable engineers to have at least “reasoning” in order to sponsor more radical concepts. Thirdly, the tool can enable optimization and increase innovation, since the team can look at why the model has low value in a certain lever, and starting to brainstorm possible solutions of how to increase it. However, the approach is still in its infancy and future work needs to be done. First of all, the weighting phase is crucial since it will profoundly affect the model. Further research will focus how the design team can place define weights in a qualitative but effective way, in order to take the major benefits from a “lightweight” qualitative approach and the simulation based on mathematical equations. Secondly, work has to address how intangibles and knowledge can affect monetary parameters, such as the price of the offerings or costs (making the intangibles tangible, so to say). This will require further research, but it has been seen as a great opportunity of making a step further in the topic, since the uncovered areas realted intangibles and knowledge are still many.

  • 257.
    Panarotto, Massimo
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Larsson, Tobias
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Larsson, Andreas
    Enhancing supply chain collaboration in automotive industry by value driven simulation2013Conference paper (Refereed)
    Abstract [en]

    This paper presents a computer-based approach for conceptual design that aims to enhance collaborative supply chain development in the automotive sector when dealing with product-service development or radical innovations. The focus of the research has been to design a simulation approach that will enable designers and managers to simulate and evaluate the value of different design options for the different stakeholders involved in the development process and to have insights about the implications between business model innovation and the engineered aspects of the solutions early in the conceptual phase. The approach is presented using a case study within the current project, after following a team responsible for the car cockpit. Four possible scenario have been simulated and evaluated using a commercial simulation software. The main advantage of the proposed approach is to enhance the awareness among designers and managers of the value of different design options, and allow them to explore further how business and design aspects profoundly affect each other, in order to support early decision-making in the design process.

  • 258.
    Peng, Chen
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Peters, Adele
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Wetherell, Treva
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Yep, Valerie
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Seeds of Change: Using Urban Agriculture to Move a City Towards Sustainability2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    As the global sustainability challenge intensifies, food has emerged as a critical issue in sustainable development. Growing food within city limits, or urban agriculture (UA), is one way to help increase access to fresh, local, healthy food for everyone while simultaneously reducing environmental impacts. While UA is increasing on a global scale, it is not always being supported in a strategic manner. This thesis explores the opportunity of how UA can be supported to help move cities towards sustainability. Current UA practices were evaluated based on information from literature and interviews using the five-level framework method. As a way to help provide guidance in strategic planning, the framework for strategic sustainable development (FSSD) was utilized, introducing the concepts of a full-system perspective, a principle-based definition of sustainability, and backcasting. Combining current UA success principles, stakeholder input, and the FSSD, an enhanced planning guide was created as a tool to help cities better plan for UA.

  • 259.
    Pereira, Julia Toledo Ribeiro
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Dunkerley, Sophie
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Nichols, Timothy
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Business Climate Change Adaptation Strategies as Contributions towards a Sustainable Society2008Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Climate change is happening, presenting threats and opportunities for society as a whole and business in particular. The transition to a low carbon economy as a result of climate change offers opportunities for business; it also represents an opportunity to create a more sustainable society. This paper considers how a business response to the climate change challenge can be used as a leverage to move towards sustainability. The focus is on adaptation strategies adopted to address the threats and opportunities presented by climate change. The tool for strategically planning for adaptation, developed herein, seeks to ensure that measures taken by business to adapt to climate change are also contributions towards a sustainable future.

  • 260. Petzel, Rebecca
    et al.
    Archer, Alice-Marie
    Fei, Rong
    Collaboration for sustainability in a networked world2010In: Procedia Social and Behavioral Sciences, Elsevier , 2010, Vol. 2, no 4, p. 6597-6609Conference paper (Refereed)
    Abstract [en]

    This paper explores how the web's collaborative potential can be harnessed strategically and practically towards sustainability. Building upon research led by Peter Gloor of MIT into collaborative innovation networks (COINs), the researchers evaluated COINs' strategic potential for sustainability as well as their practical application. The final product of this research is a set of recommendations for people considering utilizing COINs for sustainability. This paper synthesizes the findings of a masters' level thesis of the same title submitted for the international master's program Strategic Leadership towards Sustainability.

  • 261.
    Ping, Zhang
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Design and Research of Structural Health Monitoring System for Stayed Cable Bridge Based on LabWindows/CVI2008Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The thesis mainly research how to design the health monitoring system for stayed-cable bridge based on LabWindows/CVI, which includes the methods of developing the system and all kinds of theories and technologies applied in the design process. In accordance with the function modules of the system, the design process and used theoretical methods of each module are described, and the application applicability of each function module is verified with demonstrations or experiment.

  • 262.
    PRASAD, CHANDRA SHEKHAR
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    FINITE ELEMENT MODELING TO VERIFY RESIDUAL STRESS IN ORTHOGONAL MACHINING2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The aim of this thesis paper, to create a numerical model to examine the residual stresses induced by orthogonal machining in the finished work piece and the model is validated by comparing with experimental result. The finite element method is used to simulate and analyze the residual stresses induced by a orthogonal metal cutting process. A Dynamics explicit time integration technique with Arbitrary Lagrangian Eulerian (ALE) adaptive meshing Finite Element Method (FEM) is employed to simulate the model. The Johnson-Cook material model is used to describe the work material behaviour and fully coupled thermal-stress analysis are combined to realistically simulate high speed machining with an orthogonal cutting. Finite Element modelling of Residual stresses and resultant surface properties induced by round edge cutting tools is performed as case studies for high speed orthogonal machining of 20NiCrMo5 steel. As a conclusion we can say that results from 2D simulations are very close to the experimental results at the surface level, but there is bit difference when we go down in the material. In 3D simulation, results agree with the experimental values in all levels So we can say that it is possible to model residual stresses, induced by orthogonal machining with accepted amount of accuracy. Keywords Residual stress, FE-modelling, ALE formulation,3D.ABAQUS/CAE

  • 263.
    Rajagopal, Loganathan
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Rapid Load Path Design of Jet Engine Component using Knowledge Based Engineering2005Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Knowledge Based Engineering (KBE) is becoming a powerful tool to reduce the lead time in design activities of aircraft and automotive industries. In this thesis work, an application has been built using this recent technology to reduce the lead time in the conceptual design phase of an Intermediate Case which is a component in a jet engine. The objective is to create various mid-shell design configurations of the component in less time using Knowledge Fusion (KF), a KBE based object oriented programming language in Unigraphics. Later these design configurations can be used to find out the optimum load path for various load cases.

  • 264.
    Ramireddy, Viswanath
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Hussain, Mukarram
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Vibration Based Techniques for Young's Modulus Determination and Permenant Deformation Assesment2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This thesis work is devoted to low frequency vibration based method, with remote excitation and laser detection for nondestructive testing and characterization of sheet materials. By this method dynamic properties of different materials can be estimated from the measurement of the resonance frequency in flexural mode. Low Density Polyethylene (LDPE), Ethyl Acid Acrylic (EAA), Aluminium foil (Al) and Paperboard (PPR) are investigated in this work. It is observed that the method allows detection of permanent deformation in sheet materials loaded in tension, as well as determination of Young’s modulus with some exceptions. This study also confirms the use of the presented method for health monitoring of materials having no bending stiffness, developed in a previous work.

  • 265.
    Ravinath, Vijay
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Study on the Vibrations in the Discharge Pipe of Oil Flooded Screw Compressor2006Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Flow induced pulsation in piping are serious concern in refrigeration installations where noise and vibrations are critical factors. This report takes an insight look into the possible ways to minimise the noise and vibration due to pulsations. A modification of the discharge piping was done to reduce the noise produced by pressure pulsation in oil flooded screw compressor. It gets complex while trying to deduce the natural frequency of complicated piping with branches and bends. FEMLAB was used as simulation software. Reflection of waveform in piping masks the real amplitude of the pressure pulsation. A method based on signal processing was employed to decompose the incident and reflected wave.

  • 266.
    Roy, Rajdip
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Qi, Lu
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Stress Relaxation Study of Paper and Plastic film based Packaging Material2009Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In this master degree thesis the time dependent deformation of packaging material is studied. Mechanical experimental tests were carried out to monitor the stress decreasing rate on paper. Several viscoelastic models were constructed using various theories and compared with the obtained experimental stress relaxation. The results showed that the modified two-unit Maxwell model suits the best to describe the relaxation behavior of the material in discussion. MATLAB was used to derive the stress relaxation equations which indicate the time dependent stress relaxation behavior of the materials for constant elongation. FE models were created by ABAQUS for analyzing the stress relaxation behavior of the paperboard and the laminate. The simulation results were then compared with the experimental results and the theoretical viscoelastic model. Additionally, specimens with a side crack were also studied.

  • 267. Rudenko, Oleg
    The 40th Anniversary of the Khokhlov-Zabolotskaya Equation2010In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 56, no 4, p. 452-462Article in journal (Refereed)
    Abstract [en]

    The 40th anniversary of the Khokhlo-Zabolotskaya equation was marked by a special session of the 158th Meeting of the Acoustical Society of America (October 2009, San Antonio, Texas, United States). A response on the part of Acoustical Physics to this date is also quite appropriate, all the more so because Russian scientists were the main players involved in formulating and using this equation during the period of time between the middle 1960s and middle 1980s. In this article, the author—a participant and witness of those events—presents his view of the dramatic history of the formulation of this equation and related models in the context of earlier and independent work in aerodynamics and nonlinear wave theory. The main problems and physical phenomena described by these mathematical models are briefly considered.

  • 268. Rudenko, Oleg
    V.A.Robsman: Nonlinear Testing and Building Industry2006Conference paper (Refereed)
    Abstract [en]

    This talk is devoted to the memory of outstanding scientist and engineer Vadim A. Robsman who died in January 2005. Dr.Robsman was the Honored Builder of Russia. He developed and applied new methods of nondestructive testing of buildings, bridges, power plants and other building units. At the same time, he published works on fundamental problems of acoustics and nonlinear dynamics. In particular, he suggested a new equation of the 4-th order continuing the series of basic equations of nonlinear wave theory (Burgers Eq.: 2-nd order, Korteveg - de Vries Eq.: 3-rd order) and found exact solutions for high-intensity waves in scattering media. © 2006 American Institute of Physics.

  • 269.
    Rudenko, Oleg
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Оn strongly nonlinear waves and waves with strongly displayed weak nonlinearity2013In: Nonlinear Waves – 2012 / [ed] Gurbatov, S.N., Nizhny Novgorod: Institute of Applied Physics , 2013Chapter in book (Refereed)
  • 270. Rudenko, Oleg
    et al.
    Gurbatov, Sergey
    Hedberg, Claes
    Nonlinear Acoustics Through Problems and Examples2010Book (Other academic)
    Abstract [en]

    The fundamentals of nonlinear acoustics are presented in form of problems followed by solutions, explanations and answers. As distinct from existing textbooks, this book of problems not only helps the reader to become familiar with nonlinear wave processes and the methods of their description, but contributes to mastering calculation procedures and obtaining numerical estimates of the most significant parameters. Thereby, skills are acquired which are indispensable for carrying out original scientific research. This book can be useful to undergraduate and postgraduate students and researchers working in the field of nonlinear wave physics and acoustics.

  • 271. Rudenko, Oleg
    et al.
    Gurbatov, Sergey
    Hedberg, Claes
    Nonlinear Acoustics through Problems and Examples (in Russian)2006Book (Other academic)
  • 272.
    Rudenko, Oleg
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Gurbatov, S.N.
    Demin, I.Yu.
    Absorption of intense regular and noise waves in relaxing media2014In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 60, no 5, p. 499-505Article in journal (Refereed)
    Abstract [en]

    An integro-differential equation is written down that contains terms responsible for nonlinear absorption, visco-heat-conducting dissipation, and relaxation processes in a medium. A general integral expression is obtained for calculating energy losses of the wave with arbitrary characteristics-intensity, profile (frequency spectrum), and kernel describing the internal dynamics of the medium. It is shown that for weak waves, the general integral leads to well-known results of a linear approximation. Profiles of stationary solutions are constructed both for an exponential relaxation kernel and for other types of kernels. Energy losses at the front of week shock waves are calculated. General integral formulas are obtained for energy losses of intense noise, which are determined by the form of the kernel, the structure of the noise correlation function, and the mean square of the derivative of realization of a random process

  • 273.
    Rudenko, Oleg
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Hedberg, Claes
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. Blekinge Institute of Technology, School of Engineering, Department of Mathematics and Science. Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering. Blekinge Institute of Technology, School of Engineering, Department of Mathematics and Natural Sciences. Blekinge Institute of Technology, Department of Telecommunications and Mathematics.
    A new equation and exact solutions describing focal fields in media with modular nonlinearity2017In: Nonlinear dynamics, ISSN 0924-090X, E-ISSN 1573-269X, Vol. 89, no 3, p. 1905-1913Article in journal (Refereed)
    Abstract [en]

    Brand-new equations which can be regarded as modifications of Khokhlov–Zabolotskaya–Kuznetsov or Ostrovsky–Vakhnenko equations are suggested. These equations are quite general in that they describe the nonlinear wave dynamics in media with modular nonlinearity. Such media exist among composites, meta-materials, inhomogeneous and multiphase systems. These new models are interesting because of two reasons: (1) the equations admit exact analytic solutions and (2) the solutions describe real physical phenomena. The equations model nonlinear focusing of wave beams. It is shown that inside the focal zone a stationary waveform exists. Steady-state profiles are constructed by the matching of functions describing the positive and negative branches of exact solutions of an equation of Klein–Gordon type. Such profiles have been observed many times during experiments and numerical studies. The non-stationary waves can contain singularities of two types: discontinuity of the wave and of its derivative. These singularities are eliminated by introducing dissipative terms into the equations—thereby increasing their order. © 2017 The Author(s)

  • 274.
    Rudenko, Oleg
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Hedberg, Claes
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Strong and weak nonlinear dynamics: Models, classification, examples2013In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 59, no 6, p. 664-650Article in journal (Refereed)
    Abstract [en]

    The difference between strong and weak nonlinear systems is discussed. A classification of strong nonlinearities is given. It is based on the divergence or inanity of series expansions of the equation of state commonly used in the study of weak nonlinear phenomena. Such power or functional series cannot be used in three cases: (i) if the equation of state contains a singularity; (ii) if the series diverges for strong disturbances; (iii) if the linear term is absent, and higher nonlinearity dominates. Strong nonlinearities are known in acoustics, optics, mechanics and in quantum field theory. Mathematical models, solutions and observed phenomena are presented. For example, an equation of Heisenberg type and its generalization for strongly nonlinear wave system are given. In particular, exact solutions of new “quadratically cubic” Burgers and Riemann–Hopf equations are discovered.

  • 275.
    Rudenko, Oleg
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Hedberg, Claes
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Strongly nonlinear waves? A new trend of nonlinear acoustics2013Conference paper (Refereed)
    Abstract [en]

    Strongly nonlinear waves (SNWs) and extreme states of matter are key physical concepts. A SNW is a wave whose amplitude is on the order of the material's internal strength limit. When a shock front appears at a distance of 10∧2-10∧3 wavelengths in water, nonlinearity is weak but strongly expressed. The acoustic pressure is 10∧5-10∧6 Pa, much less than the internal pressure 2.2*10∧9 Pa. However, impurities decrease the breaking strength, and waves creates bubbles at smaller pressures. An explosive wave is also a SNW, breaking solids. For weakly nonlinear waves (WNWs) the equation of state can be expanded in power or functional series. However, these cannot be used in 3 cases. First, if the equation contains singularities, like for "clapping" and Hertz nonlinearities of heterogeneous solids. Secondly, if the series is divergent. Thirdly, when the linear term is absent and the higher nonlinearities dominate. Such SNWs appear in mechanics and in quantum field theory.

  • 276.
    Rudenko, Oleg
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Hedberg, Claes
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    The phenomenon of self-trapping of a strongly nonlinear wave.2014In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 135, no 4Article in journal (Refereed)
    Abstract [en]

    Self means here an effect of a wave on itself. Several self-action phenomena are known in nonlinear wave physics. Among them are self-focusing of beams self-compression of light pulses self-channeling self-reflection (or self-splitting) waves with shock fronts self-induced transparency and self-modulation. These phenomena are known for weakly nonlinear waves of different physical origin. Our presentation at ASA meeting in Montreal [POMA 19 045080 (2013)] was devoted to strongly nonlinear waves having no transition to the linear limit at infinitesimally small amplitudes. Such waves can demonstrate particle-like properties. Self-trapping consists of the arrest of wave propagation and in the formation of a localized state. In particular the model generalizing the Heisenberg' ordinary differential equation to spatially distributed systems predicts periodic oscillations but no traveling waves. Different models for strongly nonlinear waves will be considered and some unusual phenomena will be discussed. Preliminary results were published in Ac. Phys. 59 584 (2013) and Physics-Uspekhi (Adv. Phys. Sci.) 183 683 (2013). [This work was supported by the Megagrant No.11.G34.31.066 (Russia) and the KK Foundation (Sweden).

  • 277. Rudenko, Oleg
    et al.
    Korobov, A
    Izosimova, M
    Nonlinearity of Solids with Micro- and Nanodefects and Characteristic Features of Its Macroscopic Manifestations2010In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 56, no 2, p. 151-157Article in journal (Refereed)
    Abstract [en]

    The meaning of the experimentally measured nonlinear parameters of a medium is discussed. The difference in meaning between the local nonlinearity, which is measured in the vicinity of a single defect and depends on the size of the region of averaging, and the effective volume nonlinearity of the medium containing numerous defects is emphasized. The local nonlinearity arising at the tip of a crack is calculated; this nonlinearity decreases with an increase in the region of second harmonic generation. The volume nonlinearity is calculated for a solid containing spherical cavities. The volume nonlinearity is also calculated for a medium containing infinitely thin cracks in the form of circular disks, which assume the shape of ellipsoids in the course of the crack opening. The nonlinear acoustic parameter is calculated with the use of the exact classical results of the theory of cracks.

  • 278. Rudenko, Oleg
    et al.
    Sarvazyan, Armen
    Wave Biomechanics of the Skeletal Muscle2006In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 52, no 6, p. 720-732Article in journal (Refereed)
  • 279. Rudenko, Oleg
    et al.
    Schvartburg, A
    Nonlinear and Linear Wave Phenomena in Narrow Pipes2010In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 56, no 4, p. 429-434Article in journal (Refereed)
    Abstract [en]

    Phenomena arising in the course of wave propagation in narrow pipes are considered. For nonlinear waves described by the generalized Webster equation, a simplified nonlinear equation is obtained that allows for low frequency geometric dispersion causing an asymmetric distortion of the periodic wave profile, which qualitatively resembles the distortion of a nonlinear wave in a diffracted beam. Tunneling of a wave through a pipe constriction is investigated. Possible applications of the phenomenon are discussed, and its relation to the problems of quantum mechanics because of the similarity of the basic equations of the Klein– Gordon and Schrödinger types is pointed out. The importance of studying the tunneling of nonlinear waves and broadband signals is indicated.

  • 280.
    Rudenko, Oleg
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Sobisevich, A. L.
    Sobisevich, L.E.
    Hedberg, Claes
    Blekinge Institute of Technology, School of Engineering, Department of Mathematics and Natural Sciences.
    Shamaev, N. V.
    Nonlinear model of a granulated medium containing viscous fluid layers and gas cavities2012In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 58, no 1, p. 99-106Article in journal (Refereed)
    Abstract [en]

    We analyze nonlinear oscillations and waves in a simple model of a granular medium containing inclusions in the form of fluid layers and gas cavities. We show that in such a medium, the velocity of one of the wave modes is low; therefore, the nonlinearity is high and the effects of interaction are more strongly expressed than usual.

  • 281. Rudenko, Oleg
    et al.
    Stepanov, P. V. Lebedev
    Gusev, V. A.
    Korobov, A. I.
    Korshak, B. A.
    Odina, N. I.
    Izosimova, M.
    Molchanovb, S. P.
    Alfimov, M. V.
    Control of the Self-Assembly Processes in a Droplet of a Colloidal Solution by an Acoustic Field2010In: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 56, no 6, p. 935-941Article in journal (Refereed)
    Abstract [en]

    The formation of structured films consisting of ensembles of micro- or nanoparticles and possessing preset functional characteristics is studied both experimentally and theoretically. The films are obtained by drying out droplets of colloidal solutions on a solid substrate under the acoustic effect produced by a standing SAW field.

  • 282.
    Saeed, Bilal Bin
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Mgbemena, Henry
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Wu, Si-Ying
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Wang, Ying
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Youth Mentoring: A Strategic Move Towards Sustainability2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The one condition that is bottom line for the survival of humanity is socio-ecological integrity. Youth mentoring helps to build capacities in youth to preserve and promote social integrity. This thesis looks at youth mentoring programs in general and Mentor Sweden specifically, and analyzes how youth mentoring programs can contribute strategically towards a sustainable development through the lens of the Framework for Strategic Sustainable Development. The final outcome is a proposed set of suggestions which any mentoring organization can use in order to help move society strategically towards sustainable development through its mentoring programs.

  • 283.
    Safra, Natalie
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Nystrom, Josefin
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Deng, Hanzhu
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Using the Framework for Strategic Sustainable Development to complement existing leadership training approaches2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This thesis examines approaches consultants use to assist organizational leaders in moving strategically towards sustainability. The Framework for Strategic Sustainable Development (FSSD), is examined to understand how one can overcome and address the complex challenges that consultants face in assisting leaders to develop appropriate leadership skills and sustainability knowledge that will allow them to lead their organizations strategically towards sustainability. Two consulting firms located in London are reviewed. From this research, an ideal way of using the FSSD called the Strategic Leadership Training Framework (SLTF) is proposed as a tool to guide and supplement current approaches used by consulting firms to improve their leadership training programs. A gap analysis compares the SLTF and the current approaches used by consultants. The SLTF can be used as a tool to assist consultants to find the gaps between the approaches they use and the SLTF. Finally, emotional intelligence and a definition of sustainability are found to be a key factor for a leader to be successful when moving their organization strategically towards sustainability.

  • 284. Sandberg, Marcus
    et al.
    Tyapin, Ilya
    Kokkolaras, Michael
    Isaksson, Ola
    Aidanpää, Jan-Olov
    Larsson, Tobias
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    A knowledge-based master-model approach with application to rotating machinery design2011In: Concurrent Engineering - Research and Applications, ISSN 1063-293X, E-ISSN 1531-2003, Vol. 19, no 4, p. 295-305Article in journal (Refereed)
    Abstract [en]

    Novel rotating machinery design concepts and architectures are being explored to reduce mass, energy consumption, manufacturing costs, and environmental impact while increasing performance. As component manufacturers supply parts to original equipment manufacturers, it is desirable to design the components using a systems approach so that they are optimized for system-level performance. To accomplish that, suppliers must be able to model and predict the behavior of the whole machinery. Traditional computer-aided design/computer-aided engineering master-modeling approaches enable manual changes to be propagated to linked models. Novel knowledge-based master-modeling approaches enable automated coordination of multidisciplinary analyses. In this article, we present a specific implementation of such a knowledge-based master-modeling approach that facilitates multidisciplinary design optimization of rotating machinery. The master-model (MM) approach promotes the existence of a single governing version of the product definition as well as operating scenarios. Rules, scripts, and macros link the MM to domain-specific models. A simple yet illustrative industry application is presented, where rotor-dynamics and displacement analyses are performed to evaluate relocation alternatives for the rear bearing position of a rotating machinery under a ‘fan-blade-off’ load case.

  • 285. Sarvazyan, Armen
    et al.
    Rudenko, Oleg
    Nyborg, Wesley
    Biomedical applications of radiation force of ultrasound: Historical roots and physical basis2010In: Ultrasound in Medicine and Biology, ISSN 0301- 5629, Vol. 36, no 9, p. 1379-1394Article, review/survey (Refereed)
    Abstract [en]

    Radiation force is a universal phenomenon in any wave motion, electromagnetic or acoustic. Although acoustic and electromagnetic waves are both characterized by time variation of basic quantities, they are also both capable of exerting a steady force called radiation force. In 1902, Lord Rayleigh published his classic work on the radiation force of sound, introducing the concept of acoustic radiation pressure, and some years later, further fundamental contributions to the radiation force phenomenon were made by L. Brillouin and P. Langevin. Many of the studies discussing radiation force published before 1990 were related to techniques for measuring acoustic power of therapeutic devices; also, radiation force was one of the factors considered in the search for noncavitational, nonthermal mechanisms of ultrasonic bioeffects. A major surge in various biomedical applications of acoustic radiation force started in the 1990s and continues today. Numerous new applications emerged including manipulation of cells in suspension, increasing the sensitivity of biosensors and immunochemical tests, assessing viscoelastic properties of fluids and biological tissues, elasticity imaging, monitoring ablation of lesions during ablation therapy, targeted drug and gene delivery, molecular imaging and acoustical tweezers. We briefly present in this review the major milestones in the history of radiation force and its biomedical applications. In discussing the physical basis of radiation force and its applications, we present basic equations describing the relationship of radiation stress with parameters of acoustical fields and with the induced motion in the biological media. Momentum and force associated with a plane-traveling wave, equations for nonlinear and nonsteady-state acoustic streams, radiation stress tensor for solids and biological tissues and radiation force acting on particles and microbubbles are considered.

  • 286.
    Shetty, Sandeep
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Okeke, Chukwudi Anthony
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Goal Oriented Estimation of Errors due to Modal Reduction in Dynamics2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The aim of this thesis is the estimation of errors due to reduction in modal superposition method. Mode superposition methods are used to calculate the dynamic response of linear systems. In modal superposition method, it becomes unnecessary to consider all the modes of a particular system. In generally only a few number of modes contribute significantly to the solution. The main aim of the study is to identify the significant modes required for good approximation. Finally, this study constitutes a basis for developing an adaptive method, choosing the minimum number of modes required for certain accuracy. Procedure for evaluating errors is presented and numerical examples illustrate the behavior of the method in the context of forced harmonic response. Finite element modeling and simulation was carried out using MATLAB.

  • 287. Sidenmark, Mikael
    et al.
    Josefsson, Andreas
    Berghuvud, Ansel
    Broman, Göran
    The Ocean Harvester: Modelling, Simulation & Experimental Validation2009Conference paper (Refereed)
    Abstract [en]

    Among the significant difficulties of developing commercially viable wave power has been survivability in storm conditions and achieving high capacity factors. The oscillating wave motion, constantly changing wave-size, and extreme energy levels during storm conditions often lead to difficulties in reaching high capacity factors, keeping the system complexity down and avoiding over dimensioning. The Ocean Harvester is based on an innovation addressing these issues. What is unique with this concept is the way a counterweight is used to achieve a limited load on the generator and thereby a levelled power output that can be controlled to match the average level of incoming wave energy. These characteristics enable an exceptionally high capacity factor, excellent survivability and low system complexity, which altogether may lead to low capital- and O&M costs. This paper presents the working principle of the novel concept and introductory coordinated theoretical and experimental investigations of performance characteristics. Theoretical and experimental results agree very well and further simulations with the verified model using real wave data clearly show the advantage of the proposed concept. A high capacity factor is proven and the design obviously only requires existing types of components, making cost-efficient wave energy conversion feasible.

  • 288.
    Srinivas, Achanta
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    A Measurement Tool for Consumption Pattern of Hand wiping Tissue Paper2006Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Due to environmental concerns and competition within the industry there is an imminent need by paper manufacturers to asses the paper consumption depending on the quality of the tissue paper. For this purpose, the consumption of tissue paper from a tissue vending machine needs to be monitored and calculated. A Hall Effect Sensor coupled with a Passive Infrared Sensor was used to monitor the flow of paper per Person. MATLAB is used as the programming language to read the signals from the sensors. The consumption obtained would be used to obtain better, less bulky design models. As well deduce an optimum paper dimensions to get reduce the paper consumption. Also, the FEM was done in ABAQUS for better blade design of Hand wiping system.

  • 289.
    Stenberg, Richard
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Utrustning för automatisk matning av ändkapningsmaskin för lysrör2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Målet med arbetet har varit att utveckla utrustning för automatisk inmatning av lysrör till MRT:s ECM (End Cut Machine). ECM är en maskin som används för att kapa av ändarna på lysrör genom termisk chock och återvinna det kvicksilverhaltiga lyspulver som lysrören innehåller. Arbetet inleddes med att en produktdefinition sattes upp där aspekter såsom hur processen i stort går till, vilken omgivning utrustningen skall verka i , vilka människor som berörs av utrustningen och ekonomiska frågor behandlas. Efter produktdefinitionen följer en produktundersökning. Det föreligger ett starkt önskemål från MRT:s kunder att ECM ska levereras med möjlighet till automatisk inmatning av lysrör. I dagsläget finns inte finns några tidigare lösningar på problemet som uppfyller kraven tillfredställande. Nästa steg var att göra en kravuppställning. Där listas krav inom kategorierna funktion, ekonomi, miljö, ergonomi och säkerhet. Alla krav har inte kunnat implementeras eftersom projektet inte har lett till en slutgiltig produkt utan avslutades med byggandet och testandet av en prototyp. För att bestämma hur utrustningen skulle se ut togs ett antal produktförslag fram. Dessa jämfördes inbördes och i förhållande till tidigare erfarenheter av lysrörs egenskaper. Förslaget som ansågs ha störst potential att uppfylla kraven vidareutvecklades ytterligare och ritningar ritades upp i Autocad. Det vidareutvecklade förslaget har relativt låg teknisk komplexitet och utvecklingskostnaderna kan därför hållas låga. Förslaget bygger på att lysrören hela tiden hålls i rörelse med hjälp av transportband för att undvika stopp i flödet. För att se om förslaget fungerade som tänkt konstruerades en prototyp. Test av prototypen påvisade att ett antal modifikationer var nödvändiga. När modifikationerna var genomförda löste prototypen uppgiften att från ett magasin med en stor mängd lysrör leverera ett jämnt flöde. Prototypen är dock inte byggd i full skala och därmed inte testad med så stora volymer som den slutgiltiga produkten är tänkt att klara.

  • 290. Ståhlbröst, Anna
    et al.
    Bertoni, Marco
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Følstad, Asbjørn
    Ebbesson, Esbjörn
    Lund, Jesper
    Social media for user innovation in Living Labs: a framework to support user recruitment and commitment2013Conference paper (Refereed)
    Abstract [en]

    Social media are becoming an increasingly relevant channel for user involvement. However, their uptake in Living Labs environments, as a means to engage users in innovation processes, is still limited. The aim of this paper is to explore challenges and opportunities related to the usage of social media for user involvement in co-creative processes, The findings presented emerge both from the available literature and case studies, and emphasise four different dimensions influencing user engagement: content, community, platform and innovation process. Based on these dimensions, the authors propose a basic framework, intended as the point of departure for taking the next step toward the construction and verification of theoretical constructs that can help inform and guide future innovation projects.

  • 291.
    Suhail, Mohammed Basheer Dawood
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Effect of Fluid Domain Remeshing on Fluid-Structure Interaction2006Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Computational Fluid Dynamics-CFD is the numerical study of the behavior of systems involving fluid flow, heat transfer and other related physical processes. Computational Structural Dynamics involves the study of the dynamic behavior of structures.A wide range of physical phenomena involves both fluid dynamics and structural dynamics that influence each other. Typical Fluid-Structure Interaction involves fluid flow affecting the structural response and vice versa. In this thesis work, fluid-structure interaction problems are studied using various remeshing conditions. Further to this study codes are written to reduce the lead-time during analysis, minimal use of resources and to improve new tools for remeshing

  • 292.
    sun, wei
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Output Only Modal Analysis-Scaled mode shape by adding small masses on the structure2008Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    In this paper an outline is given of output only modal analysis, some of the known technologies are briefly introduced. Due to the unknown input force of the output only modal analysis, the mode scaling factor can not be estimated, only the un-scaled mode shape can be obtained from Frequency Response Functions. This paper introduces one simple method of adding masses on the structure. The natural frequency shift caused by the structure mass change is used to get the scaling factor and scaled mode shapes. The simple method is illustrated on a computer simulation of one four-degree-freedom lumped system and also on an output only measurement on a short bridge in the Blekinge Institute of Technology.

  • 293.
    Sureshram, Varadarajan
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Correlation of a FE-model of a truck heat exchanger with EMA2005Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    A simplified FE-model of the subcomponent of the Charge air cooler – core is modelled using homogenisation technique. Modal testing was performed on the physical model of the same. On comparing the resonance frequencies of the test data (reference result) with FE-model data, the FE-model is reconciled and correlated.

  • 294. Tao, Zhi
    et al.
    Zhang, Xiao-Jun
    Zhao, He-Ming
    Kulesza, Wlodek
    Noise Reduction in Whisper Speech Based On the Auditory Masking Model2010Conference paper (Refereed)
    Abstract [en]

    This paper presents the issue of whispered speech enhancement. Based on multi-band spectral subtraction method where the introduced musical residual noise occurs, the proposed approach performs parametric subtraction according to the WSS (Whispered Sensitive Scale) method that is particular for whispered speech processing and auditory masking model. The algorithm is characterized by a tradeoff mechanism between the amount of the whispered speech distortion, noise reduction, and the level of musical residual noise, which are determined by appropriate adjusting the subtraction parameters. Compared with traditional subtractive-type algorithms, the proposed method results in a significant reduction of musical residual noise. Finally, objective and subjective evaluations are implemented illustrating the improvements over traditional subtractive-type algorithms.

  • 295.
    Terne, Fredrik
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Burek, Salko
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Lättviktsgripdon2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Detta arbete är sekretess belagt under de närmaste två åren och därför kommer bara sammanfattningen att publiceras för tillfället.

  • 296.
    Tew, Mandy
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    A Learning Organization? Evaluating the University of Canterbury's Strategic Transition toward Sustainability2005Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Institutions of higher educations (IHE), particularly universities, have a significant role to play in the global transformation to socio-ecological sustainability. This study focuses on the strategic planning efforts of one university, the University of Canterbury in Christchurch, New Zealand where The Natural Step Framework (TNSF) is being used to develop a pan-University Sustainability Plan. Drawing upon the triple helix model of university-government-industry interactions for knowledge creation, and integrating principles of education for sustainable development into strategic organizational learning and change processes within higher education, this study suggests that advocates for sustainability within IHE can use the TNSF to assess institutional barriers and communicate specific opportunities in order to institutionalize strategic sustainable development and promote socio-ecological innovation.

  • 297. Thompson, Anthony
    Towards Sustainability-driven Innovation through Product Service Systems2010Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Increasing awareness of anthropogenic impacts on the planet has lead to efforts to reduce negative environmental impacts in product development for several decades. Benefits to companies who focus on sustainability initiatives have been put forth more recently, leading to many efforts to incorporate sustainability considerations in their product innovation processes. The majority of current sustainability considerations in industry constrain design space by emphasizing reduced material and energy flows across the product’s life cycle. However, there is also an opportunity to use awareness of sustainability to bring attention to new facets of design space and to drive innovation. Specifically there is an opportunity for product-service systems (PSS) to be a vehicle through which sustainability-driven innovation occurs. A framework for strategic sustainable development (FSSD) provides the basis for understanding sustainability in this work, and provides clarity with regard to how to think about sustainable products and service innovations. The “backcasting” approach included in this framework also provides insight into how incremental and radical approaches could be aligned within the product innovation working environment. This thesis explores how sustainability considerations can be better integrated into existing product innovation working environments in order to drive innovation processes within firms, with a specific emphasis on opportunities that occur as sustainability knowledge leads to innovation through a product-service system approach. It endeavors to contribute to both theory development within the emerging sustainable PSS design research area, and also to advance the state of practice within industry by connecting dots between the state of theory and the state of practice. Society’s opportunity to become more sustainable and industry’s desire for innovation in order to lead to or increase profitability are often in conflict. However, this thesis argues that knowledge of global social and ecological sustainability can be used to drive innovation processes, and that there are win-win opportunities that can often be achieved through a PSS approach. There is some, but not sufficient, support for the inclusion of sustainability considerations in the product innovation process, and even fewer tools to support the use of sustainability to drive innovation. In response, an approach to providing support that brings together the FSSD and various approaches to systems modeling and simulation is presented. Opportunities to use sustainability-friendly attributes of existing products through a PSS-approach are also presented.

  • 298. Thompson, Anthony
    et al.
    Larsson, Tobias
    Broman, Göran
    Towards Sustainability-driven Innovation through Product-Service Systems2011Conference paper (Refereed)
    Abstract [en]

    Many current sustainability considerations in industry constrain design space by emphasizing reduced material and energy flows across product life cycles. However, there are also opportunities for sustainability awareness to extend design space and drive innovation. Product-service systems (PSS) in particular can be a vehicle through which sustainability-driven innovation occurs. A framework for strategic sustainable development, including a backcasting approach, provides the basis for understanding sustainability in this work and provides insight into how incremental and radical approaches could be aligned within product innovation. This work explores how sustainability considerations can be better integrated into existing product innovation working environments, with an emphasis on opportunities that occur as sustainability knowledge leads to innovation through a product-service system approach. It is demonstrated and ideas are discussed around how sustainability can be used to drive innovation processes through product-service systems that companies rely upon, while also supporting global society’s movement toward sustainability.

  • 299.
    Thompson, Anthony
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Larsson, Tobias
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Towards sustainability-driven innovation through product-service systems2011Conference paper (Refereed)
    Abstract [en]

    Many current sustainability considerations in industry constrain design space by emphasizing reduced material and energy flows across product life cycles. However, there are also opportunities for sustainability awareness to extend design space and drive innovation. Product-service systems (PSS) in particular can be a vehicle through which sustainability-driven innovation occurs. A framework for strategic sustainable development, including a backcasting approach, provides the basis for understanding sustainability in this work and provides insight into how incremental and radical approaches could be aligned within product innovation. This work explores how sustainability considerations can be better integrated into existing product innovation working environments, with an emphasis on opportunities that occur as sustainability knowledge leads to innovation through a product-service system approach. It is demonstrated and ideas are discussed around how sustainability can be used to drive innovation processes through product-service systems that companies rely upon, while also supporting global society’s movement toward sustainability.

  • 300. Thompson, Anthony
    et al.
    Lindahl, Pia
    Hallstedt, Sophie
    Ny, Henrik
    Broman, Göran
    Decision Support Tools for Sustainability in Product Innovation in a Few Swedish Companies2011Conference paper (Refereed)
    Abstract [en]

    Companies are finding that customers increasingly demand “sustainable products” while also noticing economic benefits from eco-efficiency and other sustainability-related design approaches. Employees making product-related decisions need support tools to incorporate sustainability considerations — both at strategic (e.g. regarding product lines to develop) and operational levels (e.g. detailed design). This paper presents the results from a set of interviews that explored where and how sustainability considerations are taken into account in the product innovation processes of six Swedish companies. Results are presented as a map of the overall company operations in relation to a generic product innovation model, followed by a map of the places where sustainability considerations are made in that model. Some of the tools that are used to support those sustainability considerations are also briefly described. The conclusion is that there are some, but not sufficient, tools and methods to support inclusion of sustainability aspects in the product innovation processes of these companies.

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