Abstract: Two wovens with different organization structures were fabricated with the linear density of 2400 tex. The resin matrix was composed of epoxy resin E51 and polyether amine WHR-H023 in a mass ratio of 3∶1. The 3D curved shallow-crossing linking woven composite was then made from surface-treated reinforcement and resin matrix by VARI method. Universal Material Testing Machine was used to characterize the tensile properties of composites. The results show that, under the same compound technology, fiber volume fraction of the composites with laying-in is larger than those without laying-in. The composites with laying-in structure possess larger tensile stress and tensile model on both of warp and weft direction. The composites without laying-in structure possess larger tolerance of energy on both of warp and weft direction.

Key words: laying-in structure, angle-interlock, composites, tensile properties