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    STP631

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

    Published: 01 January 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.

    Keywords:

    fatigue (materials), microstructure, crack propagation, alloys


    Author Information:

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


    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP35551S