Cumulative Damage and Effect of Mean Strain in Low-Cycle Fatigue of a 2024-T351 Aluminum Alloy

[+] Author and Article Information
Kiyotsugu Ohji, Joseph Marin

Department of Engineering Mechanics, The Pennsylvania State University, University Park, Pa.

W. R. Miller

Department of Mechanical Engineering, The University of Toledo, Toledo, Ohio

J. Basic Eng 88(4), 801-810 (Dec 01, 1966) (10 pages) doi:10.1115/1.3645963 History: Received July 30, 1965; Online November 03, 2011


By assuming a linear cumulative damage hypothesis for strain cycling, theories are developed in this paper for fatigue life under varying strain amplitude, residual ductility after a given history of strain cyling, and life under mean strain condition. These predictions are based on uniaxial completely reversed cycling behavior. The expressions obtained were compared with the experimental results on 2024-T351 aluminum alloy as well as other data available in the literature. The agreements between theories and experiments were found to be satisfactory.

Copyright © 1966 by ASME
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