ANALYSES OF SLICE COMPRESSION TESTS FOR ALIGNED CERAMIC MATRIX COMPOSITES—Ⅱ. TYPE Ⅱ BOUNDARY CONDITION

摘要

Slice compression tests performed on aligned ceramic matrix composites have been analyzed. A composite cylinder has been adopted to model the composite. Analytical solutions have previously been obtained using Type Ⅰ boundary condition, in which the outer cylindrical surface of the composite cylinder is assumed to be free. This boundary condition represents a lower bound constraint for the composite cylinder during interfacial debonding. An upper bound constraint, i.e. Type Ⅱ boundary condition, is adopted in the present study to reanalyze slice compression tests. Limitations exist for Type Ⅰ and Ⅱ boundary conditions, and for the existing methodology in evaluating interfacial properties. Hence, a more realistic constraint, i.e. Type Ⅲ boundary condition, and an alternate methodology are also proposed.