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RESEARCH PAPERS

A Study of Creep Damage Rules

[+] Author and Article Information
M. M. Abo El Ata

San Francisco State College, San Francisco, Calif.

I. Finnie

University of California, Berkeley, Calif.

J. Basic Eng 94(3), 533-541 (Sep 01, 1972) (9 pages) doi:10.1115/1.3425474 History: Received July 26, 1971; Online October 27, 2010

Abstract

A brief review is given of the literature on damage accumulation during creep and inadequacies in our present understanding are pointed out. By drawing on recent studies of the processes involved in creep-rupture, it is suggested that a new criterion for creep-damage accumulation may be proposed, which is more general than existing approaches. This involves the consideration of both the initiation and propagation phases of fracture, and it is seen that in some cases, strengthening rather than weakening may result from prior loadings. Experimental results are cited in support of these observations.

Copyright © 1972 by ASME
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