THE INVESTIGATION OF THE ELASTIC-PLASTIC BEHAVIOR USING THE PROPERTY GRADIENT OF THE INTERFACIAL REGION IN FIBER REINFORCED MMC

In this study, the interfacial perpendicular crack behavior and stress state of the unidirectional fiber reinforced Metal Matrix Composites (MMCs) are investigated by using FEA under the transverse loading. The fiber assumed as isotropic linear elastic SiC and the matrix is assumed as isotropic elastic-plastic Ti. The fiber/matrix interface is modeled as multi thin layer with different linear material properties. The behavior of perpendicular crack to the interface according to the change of the interface characteristics and thickness are evaluated.