The Equivalence of the Final Stretch and Crack Tip Opening Angle Criteria for Plane Strain Crack Growth
- 1 April 1981
- journal article
- Published by ASME International in Journal of Engineering Materials and Technology
- Vol. 103 (2) , 148-150
- https://doi.org/10.1115/1.3224986
Abstract
The equivalence of the final stretch and crack tip opening angle criteria, as applied to the Dugdale-Bilby-Cottrell-Swinden type model for Mode I plane strain crack growth, is demonstrated. This equivalence is independent of the plastic zone size, geometrical parameters, and the stress distribution within the fracture process zone, if the yield stress is sufficiently low and the crack growth resistance is sufficiently high. The results therefore provide further support for the viability of crack tip opening angle as a crack growth characterizing parameter.Keywords
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