STP924: Crack Closure and Variable-Amplitude Fatigue Crack Growth

    McEvily, AJ
    Professor and assistant professor, University of Connecticut, Storrs, CT

    Minakawa, K
    Professor and assistant professor, University of Connecticut, Storrs, CT

    Pages: 20    Published: Jan 1988


    Abstract

    The prediction of service lifetime and the selection of alloys for maximum fatigue crack growth resistance are made complicated by the effect of prior loading histories on the rate of crack growth. Some research indicates that crack closure can be an important factor in accounting for this history effect. This paper presents a review of the lifetime on load-interaction effects on fatigue crack growth and indicates some of the future research needed to better understand the factors giving rise to history effects in the growth of long and short cracks.

    Keywords:

    crack closure, fatigue crack growth, overloads, variable amplitude loading


    Paper ID: STP23226S

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP23226S


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