Effect of Twisted Fiber on Flexural Property and Microstructure of Woven Fabric Reinforced Composite
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2017年第4期
论文作者：杜建华 赵晓琳 YANG Hongwei JIA Chengchang GAO Heng WANG Dafeng Lü Yingying
文章页码：791 - 794
摘 要：Two kinds of 2.5D deep straight-joint structure ultra-high molecular weight polyethylene（UHMWPE）（twisted and original） fibers woven fabric reinforced epoxy resin composites were prepared by the hand lay-up method. Subsequently, the flexural property, microstructures, and failure mechanisms of the composites were also investigated. The average flexural strength of 2.5D deep bend-joint structure twisted fiber and original fiber woven fabric composites were 176.66 MPa and 204.45 MPa, respectively. The results of the characteristics indicated that the twist was the main factor which affected the flexural performance. Flexural property vitally relied on the strength of the fiber itself. Twist decreased the strength of the yarns, which meant that when the mechanical property of woven fabric reinforced composites was improved, the yarns must be kept straight in the woven fabric. The study are extremely valuable to guide the improvement of the mechanical property of the woven fabric reinforced composites.
杜建华1，赵晓琳1,2，YANG Hongwei1，JIA Chengchang2，GAO Heng3，WANG Dafeng2，Lü Yingying2
1. Department of Science Research, Academy of Armored Force Engineering2. School of Materials Science and Engineering, University of Science and Technology Beijing3. Department of Self-propelled Gun, Nanjing Artillery Academy
摘 要：Two kinds of 2.5D deep straight-joint structure ultra-high molecular weight polyethylene（UHMWPE）（twisted and original） fibers woven fabric reinforced epoxy resin composites were prepared by the hand lay-up method. Subsequently, the flexural property, microstructures, and failure mechanisms of the composites were also investigated. The average flexural strength of 2.5D deep bend-joint structure twisted fiber and original fiber woven fabric composites were 176.66 MPa and 204.45 MPa, respectively. The results of the characteristics indicated that the twist was the main factor which affected the flexural performance. Flexural property vitally relied on the strength of the fiber itself. Twist decreased the strength of the yarns, which meant that when the mechanical property of woven fabric reinforced composites was improved, the yarns must be kept straight in the woven fabric. The study are extremely valuable to guide the improvement of the mechanical property of the woven fabric reinforced composites.
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