Influences of inclusions and corresponding interphase on elastic properties of composites

Abstract

In this paper, a three-layer model is proposed for the composite with an ellipsoidal inclusion core surrounded successively by the interphase and matrix phase, respectively. The elastic properties of composites are investigated, and the existence of interphase between inclusion and matrix is taken into account. The overall composite materials can be treated statistically as a transversely isotropic solid for the case of aligned axisymmetric ellipsoidal inclusions. The main novelty in the present scheme resides in the consideration of the existence of interphase surrounding the multiple types of aligned ellipsoidal inclusions, and the interactions between inclusions and interphase are taken into account. The influence of some factors, such as the particle shape, the particle size and the interphase thickness, on longitudinal and transversal Young’s modulus is analyzed. The obtained solutions are shown to agree well with the theoretical ones in the existing literature.