SEDL / STP / STP1189-EB / STP24301S

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

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

Pages: 13    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.