STP636: Fatigue of Composites at Cryogenic Temperatures

    Kasen, MB
    Staff scientists, NBS-Institute for Basic Standards, Boulder, Colo

    Schramm, RE
    Staff scientists, NBS-Institute for Basic Standards, Boulder, Colo

    Read, DT
    Staff scientists, NBS-Institute for Basic Standards, Boulder, Colo

    Pages: 11    Published: Jan 1977


    Abstract

    A comparison has been made between the wearout rates of [0/± 45/0] boron/epoxy and boron/aluminum composites in low-cycle fatigue at 295 and 76 K. Using degradation of modulus as the wearout criterion, these preliminary data indicate that cryogenic temperatures have a negligible effect on either tensile or compressive fatigue performance of boron/epoxy. A similar indication was obtained for boron/ aluminum in tensile fatigue. These conclusions are substantiated by high-cycle fatigue results on boron/epoxy.

    Keywords:

    composite materials, fatigue tests, structural composites, cryogenics,, boron, reinforced plastics, aluminum, tensile strength, modulus of elasticity


    Paper ID: STP27975S

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP27975S


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