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Measuring toughness and the cohesive stress–displacement relationship by the essential work of fracture concept

✍ Scribed by B. Cotterell; T. Pardoen; A.G. Atkins

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
517 KB
Volume
72
Category
Article
ISSN
0013-7944

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✦ Synopsis

The complete fracture behaviour of ductile double edge notched tension (DENT) specimen is analysed with an approximate model, which is then used to discuss the essential work of fracture (EWF) concept. The model results are compared with the experimental results for an aluminium alloy 6082-O. The restrictions on the ligament size for valid application of the EWF method are discussed with the aid of the model. The model is used to suggest an improved method of obtaining the cohesive stress-displacement relationship for the fracture process zone (FPZ).

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