Parameter Analysis for Time-Dependent Low-Cycle Fatigue Life

[+] Author and Article Information
Koji Yamaguchi, Kazuo Kobayashi, Kiyoshi Ijima, Satoshi Nishijima

Failure Physics Division, National Research Institute for Metals (NRIM), Nakameguro 2-3-12, Meguro-ku, Tokyo 153, Japan

J. Eng. Mater. Technol 116(4), 479-482 (Oct 01, 1994) (4 pages) doi:10.1115/1.2904316 History: Received October 01, 1991; Revised September 20, 1993; Online April 29, 2008


Temperature and strain rate dependences of low-cycle fatigue life can be represented by a modified Larson-Miller parameter. The parameter P is written by P=T(logN25 −Alog ε̇ + B), where T is temperature, N25 is fatigue life, ε̇ is strain rate, and A and B are constants. In the analysis, each data of several kinds of engineering materials from ferritic steels to austenitic stainless steels are used. These are the authors original data published in the documents of NRIM Fatigue Data Sheets. The result of 304 stainless steel has been compared with statistical analysis result by Diercks adopted in a design code. The fatigue life curves represented by the proposed parameter analysis fitted well test data in high-cycle region as well as ones in low-cycle region.

Copyright © 1994 by The American Society of Mechanical Engineers
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