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针对热压工艺中单向纤维布的压缩行为,通过自行设计的纤维可压缩性测试装置测得压缩曲线,并用Gutowski纤维压缩方程进行拟合。提出了表征可压缩性的参数,考察了初始纤维体积分数、层数、润湿介质、铺层方式和纤维种类对单向纤维布可压缩性的影响。结果表明,层数、初始纤维体积分数和润湿介质对单向纤维铺层的可压缩性没有显著影响,纤维的干湿状态、铺层方式和纤维种类对纤维层的可压缩性有明显影响。
According to the compression behavior of unidirectional fiber cloth in hot pressing process, the compression curve was measured by a self-designed fiber compressibility tester and fitted with Gutowski fiber compression equation. The parameters that characterize the compressibility are presented. The effects of the initial fiber volume fraction, the number of layers, the wetting medium, the type of ply and the type of fiber on the compressibility of the unidirectional fiber cloth are investigated. The results show that the number of layers, the initial fiber volume fraction and the wetting medium have no significant effect on the compressibility of the unidirectional fiber layup. The dry-wet state, the lay-up mode and the type of fiber have a significant effect on the compressibility of the fiber layer .