二维编织复合材料管件轴向压缩性能研究

通过优化二维编织复合材料管件复合工艺,制作了碳纤维含量较高的碳纤维复合材料管件,同时对管件进行了轴向压缩性能测试,分析并探讨了编织参数对复合材料管件纤维体积含量及轴向压缩性能的影响。结果表明:优化后的复合工艺可保持复合材料管件纤维体积含量在20%~40%之间,同时使得复合后管件的内径达到一致;在编织速度不变的情况下,随着编织节距的减小,编织角逐渐增加,纤维体积含量逐渐增加,当编织节距减小到一定程度后,纤维体积含量的增加变缓,而轴向压缩强度先升高后降低,当达到最大值时,编织角为46°。

STUDY ON AXIAL COMPRESSION PERFORMANCE OF 2D BRAIDED COMPOSITES TUBES

By optimizing the composite process of 2D braided composites tubes, the carbon fibre composite tubes containing high carbon fiber content were made. The axial compression performance test of the tubes fittings was carried out, and the influence of braiding parameters on the volume content and axial compressive properties of the composite tubes fittings was analyzed and discussed. The results show that the optimized composite process can keep the volume of the composite tubes fiber between 20% ~ 40%, while the inner diameter of the composite tubes is consistent. In the case of constant braiding speed, with the decrease of braiding pitch, the braiding angle gradually increases and the tubes volume fraction increases gradually. When the braiding pitch reduces to a certain extent, fiber volume content increases slowly, while the compressive strength increases first and then decreases. When it rea ches the maximum, the braiding angle is 46 degrees.