一方向繊維強化複合材料中の繊維－母材界面における高調波発生挙動の数値解析

抄録

The contact condition of the fiber-matrix interface is a key factor for mechanical characteristics of composite materials. The characteristics of second-harmonic generation due to nonlinearity at the interface have a possibility to be a measure of the interfacial condition. In this study, the characteristics of second-harmonic generation at the fiber-matrix interface were investigated. Influence of the interfacial condition on the fundamental wave field was also examined. As a result, it was shown that directivity pattern of scattered second-harmonic wave was varied by the interfacial stiffness. This result indicated the possibility that the interfacial condition was monitored by directivity pattern of scattered second-harmonic wave. The interfacial stiffness also affected the stop-band.