G/C纬向混杂浅交弯联三维机织复合材料的低速冲击性能

为了研究纤维混杂对三维机织复合材料低速冲击性能的影响,本文基于同一种浅交弯联三维机织结构制备成型了全碳纤维(T700)和玻璃/碳纤维(E-glass/T700)纬向混杂两种不同的复合材料。以上述两种复合材料为研究对象进行低速冲击实验,试验时设定冲击能量分别为10、23和40 J。结果表明:在不超过40 J的冲击能量下,两种复合材料均未被冲破;在三种冲击能量下,混杂材料的峰值力均小于全碳材料,其吸收能量、最大位移均大于全碳材料。在10和23 J的冲击能量下,混杂材料的损伤程度小于全碳材料;但当冲击能量达到40 J时,混杂材料的损伤程度大于全碳材料。

Low Velocity Impact Properties of G/C Hybrid Interlock 3D Woven Composites

In order to study the influence of fiber hybridization on the low-velocity impact performance of 3D woven composites,two kinds of composites of T700 carbon fiber reinforced and E-glass/T700 fiber hybrid were fabricated based on the same interlock 3D woven structure.Low-velocity impact experiments were carried out, and the impact energies were set as 10 J,23 J and 40 J,respectively.The results show that under the impact energy of no more than 40 J,the two composites are not broken.Under the three kinds of impact energies, the peak forces of hybrid materials are smaller than that of all-carbon materials,but hybrid materials have better impact energy absorption capability and larger maximum displacement.Under the impact energy of 10 J and 23 J,the damage degree of hybrid materials is smaller than that of all-carbon materials. However,when the impact energy reaches 40 J,the damage degree of hybrid materials is greater than that of all-carbon materials.