DAMAGE AND FAILURE IN CERAMIC MATRIX MINICOMPOSITES: EXPERIMENTAL STUDY AND MODEL

摘要

The mechanical behavior of minicomposites under uniaxial tension was investigated. A model based upon probabilistic-statistical approaches to multiple matrix cracking and fiber failures is proposed. Predictions from characteristics of the constituents including the fibers, the matrix and the interphase, Compared satisfactorily with the tensile force-strain curves measured on batches of Si-C/C/SiC Minicomposites tested under uniaxial tension. The minicomposites have been fabricated by Chemical Vapor Infiltration (CVI) of bundles of 500 SiC fibres by a SiC matrix.