材料科学与工程学报2012，Vol.30Issue(5)：677-683,7.
变截面三维编织复合材料的净形制备及弯曲性能
Net-Shape Preparation and Bending Performance of Tapered 3D Braided Composites
摘要
Abstract
Yarn-reduction technique was introduced for the net-shape preparation of tapered 3D braided preforms.The architectures of preforms were first investigated in different yarn-reduction manners by experimental observation and theoretical modeling.Bending performance in the tapered region of the column yarn-reduction composites,row unit yarn-reduction composites and cut composites were compared.The results show that surface or interior yarn-reduction unit is the basic yarn element to be removed and the braiding rules should be undisturbed after yarn-reduction.Two groups of special yarn trajectories are formed corresponding to the removals of a surface and an interior reduction units,respectively.In one group,the length and orientation degree increase relative to non-yarn-reduction,while in other group,found is only the change of the orientation directions.The row unit yarn-reduction composites have slightly better bending performance than the column yarn-reduction composites,while both of them have their bending performances significantly higher than those of the cut composites.关键词
变截面三维编织复合材料/减纱工艺/细观结构/弯曲性能Key words
tapered 3D braided composites/yarn-reduction techniques/architectures/bending properties分类
通用工业技术引用本文复制引用
刘兆麟,刘丽芳,俞建勇..变截面三维编织复合材料的净形制备及弯曲性能[J].材料科学与工程学报,2012,30(5):677-683,7.基金项目
国家自然科学基金资助项目 （）
东华大学博士学位论文创新资助项目 （）
国家商用飞机制造工程技术研究中心创新基金资助项目 （）
