三维编织复合材料低速冲击试验与分析  

Low-velocity impact experiment and analysis of 3-D braided composites

作　　者：杨灵敏[1,2] 焦亚男[1,2] 高华斌[1,2] 

机构地区：[1]天津工业大学复合材料研究所,天津300160 [2]天津工业大学天津市和教育部共建先进纺织复合材料重点实验室,天津300160

出　　处：《纺织学报》2009年第5期63-67,共5页Journal of Textile Research

基　　金：天津市重点科学基金资助项目(08JC2DJC25700);天津市教委基金资助项目(20060912)

摘　　要：针对三维编织复合材料在制造、使用和维护过程中受到外来物体的低速冲击而造成结构损伤及承载能力下降的问题,使用Instron Dynatup 9250HV冲击试验机对高强玻璃纤维增强环氧树脂基三维四向、三维五向和三维六向编织结构复合材料试样的抗冲击性能进行研究,建立编织结构和冲击性能之间的联系。试验结果表明:不同编织结构对冲击响应不同。与四向和五向编织结构材料相比,三维六向编织结构复合材料发生主要损伤时所需的冲击载荷和冲击能量较大,主要损伤持续时间最短,吸收的能量最少。未穿透情况下,三维编织复合材料低速冲击的主要失效模式有基体开裂和纤维断裂。In the process of manufacturing, using and maintaining, 3-dimensional （3-D） braided composites may subject to low-velocity impact from other objects, which will cause the damage of structure and decrease of load capacity. In this paper, low-velocity impact tests were conducted on 4-directional, 5-directional and 6- directional（4-Dir, 5-Dir and 6-Dir） glass/epoxy 3-D braided composites using Instron Dynatup 9250HV drop weight impact test setup. Impact resistance characteristics were studied and the relationship between braided structure and the characteristics were established. Test results showed that braiding structure influenced the impact property evidently. Compared with 4-Dir and 5-Dir structure composites, 6-Dir braided composites needed more load and energy when main damage occurred. The damage of it continued shorter time and absorbed less energy. The major failure modes of 3-D braided composites included matrix cracking, fiber breakage when it was not being penetrated.

关 键 词：复合材料 三维编织 低速冲击性能 破坏模式 

分 类 号：TB332[一般工业技术—材料科学与工程]