SEDL / STP / STP631-EB / STP35551S

Spectrum Loading—A Useful Tool to Screen Effects of Microstructure on Fatigue Crack-Growth Resistance

Bucci, RJ
Staff engineer, Engineering Properties and Design Division, Aluminum Company of America, Alcoa Laboratories, Alcoa Center, Pa.

Pages: 14    Published: Jan 1977

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Abstract

The purpose of this paper is to promote consideration of variable amplitude or spectrum fatigue loading as a useful tool for screening effects of alloy microstructure on fatigue crack-propagation resistance. Increased sensitivity to microstructure, practical interpretation, and economy of testing are offered as rationale for advantageous use of this type of test.