SYMPOSIA PAPER Published: 01 January 1985

Evaluation of Analytical Solutions for Corner Cracks at Holes


This paper evaluates four state-of-the-art stress intensity factor solutions for a single corner crack at a hole. The solutions considered are Newman and Raju's, Shah's, and Liu's one-dimensional and two-dimensional solutions. The analytical solutions are correlated with experimental stress intensity factors obtained using the James-Anderson backtracking technique. The analytical solutions are further evaluated through analytical/experimental correlations of subsequent crack growth lives and crack shape changes. The materials considered are polymethyl methacrylate (PMMA), which is a transparent polymer material, and 7075-T651 aluminum. Excellent correlations are obtained for Newman and Raju's as well as Shah's solutions. However, Liu's one-dimensional and two-dimensional solutions are unconservative.

Author Information

Heckel, JB
General Dynamics Corporation, Ft. Worth, TX
Rudd, JL
Air Force Wright Aeronautical Laboratories, Wright-Patterson Air Force Base, OH
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Developed by Committee: E08
Pages: 45–64
DOI: 10.1520/STP34245S
ISBN-EB: 978-0-8031-4933-5
ISBN-13: 978-0-8031-0225-5