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A generalized Griffith criterion for crack propagation

✍ Scribed by L.G. Margolin

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 404 KB
Volume: 19
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(84)90010-9

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✦ Synopsis

Griffith's criterion for crack propagation is generalized to consider penny-shaped cracks in a spatially uniform, but otherwise arbitrary, state of stress. A further generalization incorporates the effect of interfacial friction for cracks closed in normal compression. Various criteria for crack propagation are discussed in terms of recent experimental evidence for process zones in which the region around a crack tip is seen to be permeated by smaller microcracks.

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