摘要
通过对三种Z向增强(包括改进锁式缝合、Tufting缝合和Z-pin增强)复合材料层压板的冲击及冲击后压缩试验研究,得到Z向增强复合材料层压板的冲击后压缩强度,分析破坏模式和破坏机制,并与未增强层压板试验结果进行对比。研究结果表明,由于Z向增强有效抑制了分层损伤,使三种Z向增强试件的破坏模式与破坏机制明显不同于未增强试件,大幅度提高了抗冲击性能,与未增强层压板相比,三种Z向增强层压板的冲击损伤面积大幅减小,冲击后压缩强度大幅提高。分析缝合工艺对两种缝合试件抗冲击性能的影响,结果表明,与改进锁式缝合相比,Tufting缝合试件的冲击损伤面积减小了12.42%,而冲击后压缩强度则增加了13.43%,说明Tufting缝合试件的抗冲击性能优于改进锁式缝合。
Z-reinforced(including modified lock stitch,Tufting and Z-pin reinforcement) composite laminates under low velocity impact and compression after impact were investigated experimentally,compression strength after impact were obtained,failure modes and failure mechanisms were analysed,and the results were compared with unreinforced composite laminates.The results show that Z-reinforced appears to be effective in suppressing the delamination in the composite laminates,so it changes failure modes and failure me...
出处
《机械强度》
CAS
CSCD
北大核心
2010年第3期373-377,共5页
Journal of Mechanical Strength
基金
国家自然科学基金资助项目(10572116)~~
