Abstract
Mechanical behavior of fiber-composites is strongly affected by the interface between the fiber and matrix. In this paper, recent modeling study on influences of interface on strength of (A) coated fiber whose coating layer is precracked and (B) multi-filamentary composistes in which brekages of fiber, matrix and interface occur at various locations, accumulating with increasing applied stress and determine the overall strength, was reviewed. From these results, the necessary conditions to achieve high strength through interfacial control were mentioned.
