Design Curve to Characterize Fatigue Strength

[+] Author and Article Information
C. L. Shen, P. H. Wirsching

Department of Aerospace and Mechanical Engineering, The University of Arizona, Tucson, AZ 85721

G. T. Cashman

General Electric Aircraft Engines, Cincinnati, OH 45215-6301

J. Eng. Mater. Technol 118(4), 535-541 (Oct 01, 1996) (7 pages) doi:10.1115/1.2805953 History: Received September 25, 1994; Revised March 17, 1996; Online November 27, 2007


Fatigue (S-N) data exhibit relatively large scatter. For design purposes, an S-N curve that characterizes fatigue strength is required. This curve should lie on the lower, or safe, side of the data. A method based on a modification of the Owen tolerance interval is proposed. The method is general and can be applied to nonlinear heteroscedastic data having runouts.

Copyright © 1996 by The American Society of Mechanical Engineers
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