期刊
ENGINEERING FRACTURE MECHANICS
卷 127, 期 -, 页码 46-55出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2014.05.006
关键词
Polymers; Thin films; Fracture mechanics; J-integral; Essential work of fracture
类别
The validity of the essential work of fracture (EWE) method and its relation to J-integral were questioned by applying it to three polymeric materials with different characteristics, in particular with respect to their yield behavior. The importance of having an almost fully yielded ligament before crack onset was considered. Only when this condition is met, an essential work parameter can be identified which is equivalent to the J-integral at crack initiation, as determined by the Begley-Landes multispecimen method. No correlation was found between the slopes of relevant EWF and J-R curves. (C) 2014 Elsevier Ltd. All rights reserved.
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