Paper number 405

EFFECT OF THE MATRIX PROPERTIES ON THE STRENGTH AND RELIABILITY OF FIBER REINFORCED METALS COMPOSITE

Yun LU¹, Jin PAN², Koichi GODA³, and Hideharu FUKUNAGA²

1Department of Urban Environment Systems, Faculty of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
2Department of Mechanical Engineering, Faculty of Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
3Department of Mechanical Engineering, Faculty of Engineering, Yamaguchi University, 2557, Jyobandai, Yamaguchi, 755-8611, Japan

Summary

In this study, a Monte-Carlo simulation based on the elastic-plastic finite element method was carried out for estimating effect of matrix property on the strength and reliability of composite. The results showed that if yield stress or work hardening of the matrix decreased, composite strength decreased and the strength scatter increased. The decrease of composite strength is related to the reduction of the reinforced efficiency of fiber. At the same time, count of accumulated fiber-break is reduced when yield stress or work hardening of the matrix decreased. It can be concluded that the fiber fracture process is closely related to the strength and reliability of composite.

Keywords

fiber reinforced metals, tensile strength, reliability, Monte-Carlo simulation, finite element method, fracture process, Weibull distribution.