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RESEARCH PAPERS

Multispecimen Fatigue Crack Propagation Testing

[+] Author and Article Information
A. M. Ermi, R. E. Bauer, B. A. Chin, J. L. Straalsund

Hanford Engineering Development Laboratory, Richland, WA 99352

J. Eng. Mater. Technol 103(3), 240-245 (Jul 01, 1981) (6 pages) doi:10.1115/1.3225008 History: Received October 15, 1980; Online September 15, 2009

Abstract

Chains of miniature center-cracked-tension specimens were tested on a conventional testing machine and on a prototypic in-reactor fatigue machine as part of the fusion reactor materials alloy development program. Annealed and 20 percent cold-worked 316 stainless steel specimens were cycled under various conditions of temperature, frequency, stress ratio and chain length. Crack growth rates determined from multispecimen visual measurements and from an electrical potential technique were consistent with those obtained by conventional test methods. Results demonstrate that multispecimen chain testing is a valid method of obtaining fatigue crack propagation information for alloy development.

Copyright © 1981 by ASME
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