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RESEARCH PAPERS

Notch Effect in Biaxial Low Cycle Fatigue at Elevated Temperatures

[+] Author and Article Information
H. Umeda

Hiroshima-Denki Institute of Technology, 6-20-1 Nakano Aki-ku Hiroshima, 739-03, Japan

M. Sakane, M. Ohnami

Department of Mechanical Engineering, Ritsumeikan University, 56-1 Tojiin Kita-machi, Kita-ku Kyoto, 603, Japan

J. Eng. Mater. Technol 111(3), 286-293 (Jul 01, 1989) (8 pages) doi:10.1115/1.3226468 History: Received January 10, 1988; Online September 15, 2009

Abstract

This paper describes the notch effect in biaxial low cycle fatigue of an austenitic stainless steel SUS 304 at 873K in air. Mises’ equivalent stress controlled fatigue tests were carried out for the three kinds of round notched specimens in push-pull/torsion biaxial stress states. Cracks emanated at the notch root were measured by a d.c. potential drop method. Reduction in the fatigue life due to the notch was most significant in the reversed torsion test in comparison with the push-pull and combined push-pull/reversed torsion tests. The conventional fatigue life prediction methods, i.e., the Neuber’s rule, the Stowell’s method, and the Koe’s method, were applied to the experimental data and the accuracy of the prediction methods were discussed.

Copyright © 1989 by ASME
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