STP1189

    Near-Tip Behavior of Particulate Composite Material Containing Cracks at Ambient and Elevated Temperatures

    Published: Jan 1993


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    Abstract

    After briefly reviewing the results of a series of constant head rate tests on center-cracked “biaxial” test specimens of a particulate composite at room temperature, a second test series utilizing edge-cracked “biaxial” specimens of a particulate composite with a different particulate gradation at ambient and elevated temperatures and low and moderately high head rates is discussed. Results show different near-tip mechanisms for crack opening and growth for the two materials and, while changes in head rate and temperature produced quantitative differences in near-tip fields of displacement and strain for both materials, they did not affect the basic near-tip mechanisms of each material qualitatively.

    Keywords:

    fracture mechanics, particulate composites, crack opening, crack growth, near-tip fields, dominant eigenvalues, fatigue (materials)


    Author Information:

    Smith, CW
    Alumni professor and graduate research assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Wang, L
    Alumni professor and graduate research assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Mouille, H
    Alumni professor and graduate research assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Liu, C-T
    Program manager, Phillips Laboratory (AFSC), CA


    Paper ID: STP24301S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP24301S


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