1997 Volume 46 Issue 4 Pages 335-342
In order to investigate the effect of the interfacial property on stress transmissibility, the finite element analytical model in which fiber, matrix and interphase were divided independently into mesh elements has been applied. The interfacial region was assumed as orthotropy. The concept of orthotropy on the composite interphase is suitable for investigating the effects of stress bearing and stress transfer on mechanical behaviors. This paper deals with the study on the influence of the gradient Interphase on the stress transfer. Either the axial tensile modulus or the shear modulus was varied gradually in the interphase. From the analytical results, it is concluded that the difference in gradient distribution of the interfacial tensile modulus or the interfacial shear modulus affected both the interfacial stress transmissibility and stress bearing in the interphase. Therefore, it is obvious that this numerical analytical modelling on composite interface is suitable for the numerical approach of fiber reinforced composites, because it is possible to represent separately stress transfer and stress bearing as the role of the interface/interphase.
