Measuring toughness and the cohesive stress-displacement relationship by the essential work of fracture conceptCotterell, B., Pardoen, T. and Atkins, A. G. (2005) Measuring toughness and the cohesive stress-displacement relationship by the essential work of fracture concept. Engineering Fracture Mechanics, 72 (6). pp. 827-848. ISSN 0013-7944 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1016/j.engfracmech.2004.10.002 Abstract/SummaryThe 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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