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RESEARCH PAPERS

Fatigue Failure Under Complex Stress Histories

[+] Author and Article Information
T. D. Scharton, S. H. Crandall

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Mass.

J. Basic Eng 88(1), 247-250 (Mar 01, 1966) (4 pages) doi:10.1115/1.3645817 History: Received March 15, 1965; Online November 03, 2011

Abstract

An expression for predicting fatigue failure of a structure subjected to sinusoidal stress cycles of different amplitudes and different mean values is derived. The derivation is based on a steady-state model of fatigue crack growth. For two cases, predicting in-service fatigue failure and predicting crack growth in a laboratory test, the derived expression is substantially equivalent to the classical linear damage rule. The crack-growth derivation extends the classical linear damage concept to the problem of predicting the remaining fatigue life of a partially damaged structure.

Copyright © 1966 by ASME
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