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本文采用1×1,1×2和1×3三种不同的编织结构对轴向增强和非增强三维多向编织复合材料的性能进行了研究。对编织复合材料的拉伸强度、刚度和弯曲强度、刚度进行了实验分析。结果表明:三维编织复合材料具有良好的性能。编织结构对复合材料性能有较大的影响。纤维表面编织角和纤维体积比是影响复合材料性能的重要结构参数。通过轴向加入非编织增强纤维,使编织复合材料的拉伸强度和模量,弯曲强度和模量有了较大改善。
In this paper, three different weaving structures, 1 × 1, 1 × 2 and 1 × 3, were used to study the properties of axially enhanced and non-reinforced 3D multidirectional braided composites. The tensile strength, stiffness, flexural strength and stiffness of braided composites were analyzed experimentally. The results show that the three-dimensional braided composites have good properties. Braided structure has a greater impact on the performance of composite materials. Fiber braid angle and fiber volume ratio are important structural parameters that affect the properties of the composite. By adding non-woven reinforcing fibers axially, the tensile strength and modulus, flexural strength and modulus of braided composites are greatly improved.