Variation of the energy release rate as a crack approaches and passes through an elastic inclusion
✍ Scribed by Rongshun Li; A. Chudnovsky
- Publisher
- Springer Netherlands
- Year
- 1993
- Tongue
- English
- Weight
- 265 KB
- Volume
- 59
- Category
- Article
- ISSN
- 1573-2673
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✦ Synopsis
A process zone consisting of an array of various kinds of defects such as microcracks, crazes, shearbands, voids and so forth has been frequently observed and widely reported. It is difficult to analyze the interaction between the crack and the array of defects. One approach is to model the random array of microcracks or other defects by an elastic inclusion with effective elastic properties. In the present work we use this approach to analyze the variation of the energy release rate (ERR) at the tip of a crack penetrating an elastic inclusion. This study is stimulated by recent observations of the mechanism of crack initiation and arrest in ceramics [ 1].