Parameter Representation of Dynamic Equilibrium in Creep and Fatigue

[+] Author and Article Information
B. R. Gain

Materials Development Operation, Knolls Atomic Power Laboratory, General Electric Company, Schenectady, N. Y.

G. M. Sinclair

Department of Theoretical and Applied Mechanics, University of Illinois, Urbana, Ill.

J. Basic Eng 92(3), 610-618 (Sep 01, 1970) (9 pages) doi:10.1115/1.3425085 History: Received August 01, 1969; Online October 27, 2010


In this study, a set of two parameters was used to describe the state of dynamic equilibrium for hardening and softening behavior in a variety of metallic materials, subjected to cyclic and static loading conditions, temperatures, and strain rates in the range of practical interest. The parameters consisted of a time-temperature parameter and a cyclic stress-strain parameter. Stable or near-stable values of cyclic stress and strain and of creep rate were extracted from numerous sources in the literature. Values for each parameter were calculated from that data and their functional relationship was studied. Results suggest a single relationship between the two parameters for pure FCC metals for both creep and fatigue.

Copyright © 1970 by ASME
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