A Method for the Analysis of the Growth of Short Fatigue Cracks

[+] Author and Article Information
A. J. McEvily, Y.-S. Shin

Metallurgy Department and Institute for Materials Science, University of Connecticut, Storrs, CT 06269

J. Eng. Mater. Technol 117(4), 408-411 (Oct 01, 1995) (4 pages) doi:10.1115/1.2804734 History: Received June 03, 1995; Online November 27, 2007


A method for the analysis of the fatigue crack growth rate for short cracks has been developed and is applied to the case of fatigue crack growth of short surface cracks in a 1045 carbon steel. The method entails three modifications to standard LEFM procedures. These modifications include the use of a material constant to bridge between smooth and cracked specimen behavior, consideration of the plastic zone size to crack length ratio, and incorporation of the development of crack closure. Comparisons are made between calculations based upon this approach and experimental data.

Copyright © 1995 by The American Society of Mechanical Engineers
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