A microcomposite test procedure for evaluating the constituent properties of CMCs produced by chemical vapor infiltration is described. The analysis and experimental results demonstrate that the interface sliding resistance t o can be obtained from the unload/reload hysteresis, after one (or more) matrix crack has been induced. The nonlinear strain can also be used to provide an independent determination of t o , as well as give values for the misfit strain and the interface debond energy. Results obtained on SiC/C/SiC and SiC/BN/SiC materials are evaluated.
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Lamon et al. (1995) studied this question.
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