Z-pin的拔出强度试验研究  

Experimental Study on Pull-out Strength of 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：《材料工程》2011年第11期1-4,共4页Journal of Materials Engineering

基　　金：国家自然科学基金项目(11072175)

摘　　要：通过单根Z-pin从复合材料层合板中拔出的试验方法,测试了Z-pin的拔出强度,计算了Z-pin的临界埋入深度,并引入抗拉强度利用率概念来表征Z-pin的抗拉强度在拔出过程中的利用程度。结果表明,直径0.50mm和0.28mm的Z-pin临界埋入深度分别约为5.1mm和3.1mm。当Z-pin的埋入深度小于临界埋入深度时,Z-pin从层板中拔出;Z-pin拔出强度与埋入深度成正比,与Z-pin的直径成反比;当Z-pin的埋入深度大于临界埋入深度时,Z-pin发生断裂,Z-pin的抗拉强度利用率达到100%。最后提出了提高抗拉强度利用率的建议。The pull-out strength of Z-pins was tested by the single Z-pin pull-out tests from the composite laminates,the critical embedded length has been calculated and tensile strength utilization ratio was introduced to characterize the utilization degree of tensile strength of Z-pins during the pull-out processes.The results show that,the critical embedded depth of the Z-pins with the diameter of 0.50mm and that of 0.28mm are 5.1mm and 3.1mm respectively.And,when the embedded depth is below the critical depth,Z-pins pull-out from the laminates and the pull-out strength of the Z-pins is proportional to the embedded depth,and is inversely proportional to the diameter.When the embedded depth is equal to or greater than the critical depth,breaks occur in the Z-pins,and the tensile strength utilization ratio of Z-pins reaches 100%.Finally,some suggestions for improving tensile strength utilization ratio of Z-pins were put forward.

关 键 词：Z-PIN 拔出强度 复合材料 拔出试验 抗拉强度 

分 类 号：TB332[一般工业技术—材料科学与工程]