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Crack Linkup by Stable Crack Growth

L. Ma1, A.S. Kobayashi2, S. N. Atluri3, P.W. Tan4
University of Washington, Department of Mechanical Engineering, Seattle, WA 98195-2600. Currently at United Technologies Research Center, Structural Integrity Group, East Hartford, CT 06108
University of Washington, Department of Mechanical Engineering, Seattle, WA 98195-2600
University of California, Los Angeles, Center for Aerospace Research and Education, Los Angeles, CA, 90095-1597
FAA William J. Hughes Technical Center, Atlantic City International Airport, NJ 08405

Computer Modeling in Engineering & Sciences 2000, 1(4), 19-26. https://doi.org/10.3970/cmes.2000.001.471

Abstract

Experimentally determined Tε* and CTOA resistance curves were used to simulate numerically, stable crack growth and the ensuing crack linkup in 0.8 mm thick 2024-T3 aluminum tension specimen with multiple site damage (MSD) subjected to monotonically/cyclically increasing loading. The Tε* integral correctly predicted the crack growth and linkup history as well as the onset of rapid fracture in MSD specimens. The CTOA criterion also predicted the crack growth history but in its present form, could not predict crack linkup and rapid fracture.

Keywords

stable crack growth, crack linkup, Tε* integral, CTOA, multiple site damage (MSD)

Cite This Article

Ma, L., Kobayashi, A., Atluri, S. N., Tan, P. (2000). Crack Linkup by Stable Crack Growth. CMES-Computer Modeling in Engineering & Sciences, 1(4), 19–26.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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