STP844

    Dynamic and Static Fatigue of a Machinable Glass Ceramic

    Published: Jan 1984


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    Abstract

    The dynamic and static fatigue behavior of a machinable glass ceramic was investigated to assess its susceptibility to stress corrosion-induced delayed failure. Fracture mechanics techniques were used to analyze the results so that lifetime predictions for components of this material could be made. The resistance to subcritical crack growth of this material was concluded to be only moderate and was found to be dependent on the size of its microstructure.

    Keywords:

    glass ceramic, fracture mechanics, dynamic fatigue, static fatigue, life-time predictions, proof test, reliability, structural reliability, brittle materials


    Author Information:

    Magida, MB
    Materials engineer and ceramics engineers, National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, Md.

    Forrest, KA
    Materials engineer and ceramics engineers, National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, Md.

    Heslin, TM
    Materials engineer and ceramics engineers, National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, Md.


    Paper ID: STP35238S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP35238S


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