An estimation of the energy release rate J for a three-dimensional nonlinear elastic solid containing a two-dimensional plane crack is presented. Special attention is focused on a pipe with a circumferential surface crack subjected to bending. The present analysis gives an estimation of the distribution of J along the crack front of a circumferential surface crack. Fracture instability of the cracked solid is also discussed. Based on the deformation theory of plasticity and a postulated criterion for crack growth, wall-breakthrough instability of the circumferential surface crack is examined. The predictions of the present analysis are in agreement with experimental observations, and indicate that a longer circumferential surface flaw is more susceptible to radial instability. Implications of this study on “leak before break” conditions are also discussed.
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February 1986
Research Papers
Estimation of Energy Release Rates and Instability Analysis for a Pipe With a Circumferential Surface Crack Subjected to Bending
J. Pan
J. Pan
Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, Ann Arbor, Mich. 48109
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J. Pan
Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, Ann Arbor, Mich. 48109
J. Pressure Vessel Technol. Feb 1986, 108(1): 33-40 (8 pages)
Published Online: February 1, 1986
Article history
Received:
January 19, 1985
Revised:
April 17, 1985
Online:
November 5, 2009
Citation
Pan, J. (February 1, 1986). "Estimation of Energy Release Rates and Instability Analysis for a Pipe With a Circumferential Surface Crack Subjected to Bending." ASME. J. Pressure Vessel Technol. February 1986; 108(1): 33–40. https://doi.org/10.1115/1.3264749
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