STP745

    Consequences of Varying Surface Heat Transfer Coefficients, Material Properties, and Cyclical Ambient Temperatures upon Stress Intensity Factors for Edge Cracks

    Published: Jan 1981


      Format Pages Price  
    PDF (216K) 16 $25   ADD TO CART
    Complete Source PDF (4.5M) 16 $55   ADD TO CART


    Abstract

    Stress intensity factors were calculated for an edge crack subjected to time varying surface heat transfer coefficients and to cyclical ambient temperatures. Both constant and varying material properties were used and values of KI are presented as functions of crack depth and time. Substantial changes in the maximum values of KI were noted for these different cases. In general, quench tests with specimens whose material properties increase with temperature show much lower values of KI than do specimens with material properties which are either constant or decrease with temperature.

    Keywords:

    fracture, ceramics, crack growth, thermal stress, temperature dependent properties, composite materials, crack propagation


    Author Information:

    Emery, AF
    Professor, professor, and research assistant, University of Washington, Seattle, Wash.

    Kobayashi, AS
    Professor, professor, and research assistant, University of Washington, Seattle, Wash.

    Bieler, TR
    Professor, professor, and research assistant, University of Washington, Seattle, Wash.


    Paper ID: STP28310S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP28310S


    CrossRef ASTM International is a member of CrossRef.