STP945

    Calibration of a Mode II Test Specimen

    Published: Jan 1988


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    Abstract

    Mode II and Mode I calibrations of the NASA Lewis Research Center Mode II fatigue specimen were performed experimentally over crack length to specimen width ratios (a/W) of 0.5 to 0.9. Mode II displacements were measured both at the specimen notch mouth and at the intersection of the notch with the centerline of the loading pin holes. Mode I displacements were measured across the span of the specimen at the loading pins' centerline. Analytical stress intensity factor coefficients for both Mode II and Mode I are also presented.

    Keywords:

    Mode II, compliance, fatigue, edge-sliding mode


    Author Information:

    Buzzard, RJ
    Materials engineer and aerospace engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Gross, B
    Materials engineer and aerospace engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH


    Paper ID: STP23291S

    Committee/Subcommittee: E08.93

    DOI: 10.1520/STP23291S


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