Journal
ENGINEERING FRACTURE MECHANICS
Volume 77, Issue 14, Pages 2654-2661Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2010.07.017
Keywords
Essential work of fracture (EWF); Ductile fracture; Crack initiation
Categories
Funding
- Education and Science Ministry [MAT2006-13354]
- National Council of Science and Technology (CONACYT) of Mexico
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The fracture behaviour of a 0.5 mm thick ethylene-propylene block copolymer, previously evaluated using the essential work of fracture method, has been analyzed again in more detail, using different plots, allowing the determination of the crack initiation displacement and stress. In such plots is evidenced that the specific essential work of fracture, w(e), corresponds to the energy just up to crack initiation value that can be related with J(0). Also, it has been found a novel relationship between the plastic term, beta w(p) and the crack initiation stress, sigma(i). (C) 2010 Elsevier Ltd. All rights reserved.
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