复合材料Z-pin的压缩试验研究  

Experimental Studies on Compressive Properties of Composite Z-pins

作　　者：王晓旭[1] 陈利[1] 

机构地区：[1]天津工业大学复合材料研究所教育部先进纺织复合材料重点实验室,天津300160

出　　处：《航空材料学报》2011年第4期90-95,共6页Journal of Aeronautical Materials

基　　金：国家自然科学基金项目(11072175)

摘　　要：通过三种复合材料Z-pin的轴向压缩试验,观察了各Z-pin的压缩行为,分析了三种复合材料Z-pin在不同长度时的极限应力及其失效形式。结果表明,直径为0.50mm的碳纤维Z-pin的压缩性能最好,其各长度Z-pin所能承担的极限应力都较大。直径0.28mm的碳纤维Z-pin易发生失稳现象,芳纶纤维Z-pin在压缩力的作用下,接触端容易受到破坏。两种碳纤维Z-pin临界应力的理论值与试验值吻合较好,但芳纶纤维Z-pin的临界应力的试验值比理论值偏低。The axial compressive behavior of three kinds of composite Z-pins was investigated.The ultimate compressive stress and failure modes of composite Z-pins with different length were analyzed.The results show that carbon fiber Z-pins with the diameter of 0.50mm have the best compressive properties.Those with the diameter of 0.28mm are apt to be buckled.And aramid fiber Z-pins are easily failures on the contact point.Theoretical predictions of critical stress of carbon fiber Z-pins agree well with the experimental results,but the experimental value of the critical stress value of aramid fiber Z-pins is lower than the theoretical value.

关 键 词：Z-PIN 复合材料 压缩试验 临界应力 

分 类 号：TB332[一般工业技术—材料科学与工程]