Abstract

The influence of fiber pull-out on the mechanical properties of fiber reinforced ceramics has been analyzed using an approach based on weakest-link statistics. The essential physics contributed by the statistics is the establishment of a relationship between the fiber failure site, which governs the pull-out length, and the properties of the fibers, the matrix, and the interface. This analysis involves the development of a stress/displacement law for fibers in the bridging zone of a matrix crack, thereby permitting a discussion of the crack growth resistance and its dependence on relevant microstructural variables.

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