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The influence of the stress-assisted diffusion on crack initiation and caustics

✍ Scribed by G.A. Papadopoulos; P.I. Poniridis

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 993 KB
Volume: 40
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(91)90263-z

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✦ Synopsis

Abslraet-In this paper the crack initiation under stress-assisti diffusion is studied. Around the crack-tip a core region is developed by the stress-assisted dflusion. This core region is a strongIy brittle area which depends on the sum of the principal stresses at the crack-tip and on phenomenological coeflicients. Based on this assumption, the crack extension angle is determined by use of the Det.-criterion. This study is applied for various materials with different phenomenological coefficients.

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