Equivalence of the final stretch and crack tip opening angle criteria for plane strain crack growth

Journal Article · Wed Apr 01 00:00:00 EST 1981 · J. Eng. Mater. Technol.; (United States)

DOI:https://doi.org/10.1115/1.3224986· OSTI ID:5315354

Smith, E

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 chracterizing parameter. 7 refs.

• Research Organization: Univ. of Manchester Inst. of Science and Technol, England
• OSTI ID: 5315354
• Journal Information: J. Eng. Mater. Technol.; (United States), Vol. 103:2
• Country of Publication: United States
• Language: English

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