Mechanics of the Fiber-Matrix Interphase Push-Out Test

摘要

The stress distribution for the fiber-matrix interphase push-out test is derived. The analytical solution provides the mechanics foundation to relate experimental measurements to the properties of the interphase. The shear-lag model incorporates a discrete interphase region quantified by the thickness and shear modulus of the interphase. Except for the basic shear-lag model assumptions, the method follows a rigorous mathematical approach. Accuracy of the analytical solution is assessed using finite element analysis. The data reduction scheme enables the interphase strength and shear modulus to be determined from load-deformation response of the specimen.