TRANSLAMINAR REINFORCEMENTS IN FIBER COMPOSITES

摘要

Translaminar reinforcements (TLR) are effective means of improving the interlaminar fracture toughness of laminated fiber composites. The three methods to provide such reinforcements are: stitching, z-pinning and three-dimensional weaving. Although TLR are effective in improving the interlaminar fracture toughness, there is an optimum amount of reinforcement that can be provided to a given laminated structure. Excessive reinforcement may weaken the laminate. On the other hand weak reinforcements could be detrimental as they could lead to lowering the stiffness of the structure as the crack propagates. In this paper we review some of the analytical, numerical and experimental methods used to understand the effectiveness of TLR.