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A simple model for crack growth in creep resistant alloys

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Abstract

A simple model of creep crack growth, valid for creep-resistant alloys, is described. For such alloys, it may be assumed that the creep deformation is essentially confined to a thin region in the neighborhood of the crack tip. This thin region is modeled as a cohesive zone. Outside the cohesive zone, linear elastic conditions are assumed to prevail. Numerical results for both transient and steady-state crack growth are presented. For reasonable choices of model parameters, the numerical results show rather good agreement with experimental data.

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Authors and Affiliations

  1. Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA, 18015, U.S.A.

    T.J. Delph

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  1. T.J. Delph
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Delph, T. A simple model for crack growth in creep resistant alloys. International Journal of Fracture 98, 77–86 (1999). https://doi.org/10.1023/A:1018717808350

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  • DOI: https://doi.org/10.1023/A:1018717808350

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