Fracture Toughness Testing of Non Standard Specimens
Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering2004 (English)Report (Other academic)
The fracture behavior of the main layers used in food packaging material is studied. Investigations include aluminium foil (9μm), paper board (100 μm) and Low Density Polyethylene (27 μm). The plane stress fracture toughness of each layer is derived based on a centered crack panel. Different crack sizes have been tested. A compromise (crack length) was found, at which Strip Yield Model as well as Linear Elastic Fracture Mechanics allow the validation of experimental results. Meanwhile, accurate results are obtained using the Strip Yield Model with a geometric correction. The result is also used to evaluate crack initiation from a notch when all three layers are laminated.
Place, publisher, year, edition, pages
Blekinge Tekniska Högskola Forskningsrapport, ISSN 1103-1581 ; 5
fracture, strip yield model, packaging material
IdentifiersURN: urn:nbn:se:bth-00256Local ID: oai:bth.se:forskinfoBACF1176DFBE0526C1256E7B0027FD60OAI: oai:DiVA.org:bth-00256DiVA: diva2:837502