Fiber Debonding and Pullout Processes in Ceramic Composites

The fiber debonding and pullout behavior in a model ceramic composite system has been investigated using a novel single-fiber pullout technique. Stable, progressive debonding was observed prior to fiber fracture and frictional fiber pullout. Interfacial parameters were calculated from single load-displacement curves using a recent analysis of the fiber debonding and pullout process. The interfacial parameters extracted from these experiments are consistent with independent measurements reported in the literature. The morphology of the fiber surface appears to play a significant role in determining the fiber debonding and sliding behavior.