Development of a Nakajima test and its potential variants setup on thin flexible LDPE film and Aluminum foil
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
Student thesis
Abstract [en]
The thesis aimed to identify fracture strain for multiaxial loading for laminate material of Al and LDPE that is mostly used in the food packing technology specially in liquid packaging industry. These materials are thin and flexible which make it difficult to handle and test it. The investigation was through applying new Nakajima test setup on such a material by designing a custom setup and 3D printing the Nakajima setup prototype to be able to use it in this study. DIC technique was used to get the results from the Nakajima test and the software used to apply the DIC technique is GOM correlate. As a validation for measurement from such a technique, a tensile test has been done and measured strains were compared with those from the specimen from the Nakajima that has smallest width as it was close to a uniaxial loading. One more validation technique was by creating a FE-model using (Abaqus software) for the biaxial loading and comparing it to the biaxial loading results that obtained from the DIC analysis.
Place, publisher, year, edition, pages
2019. , p. 57
Keywords [en]
Nakajima test, DIC (Digital image correlation, Abaqus, Ductile damage, Thin packaging laminates
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:bth-19007OAI: oai:DiVA.org:bth-19007DiVA, id: diva2:1377484
Subject / course
MT2565 Master's Thesis in Mechanical Engineering - Structural Mechanics
Educational program
MTAMT Master of Science Programme in Mechanical Engineering with emphasis on Structural Mechanics
Presentation
2019-10-28, karlskrona, 09:15 (English)
Supervisors
Examiners
2019-12-122019-12-112019-12-12Bibliographically approved