An Experimental Study on Static Strength of Interference-fit Composite Joint with Blind Pumping Bolt Fastener
The experimental investigations were conducted in order to study the static strength of the mechanically fastened composite joints, involving interference-fit joint with blind pumping bolt and Sliding-fit joint with high lock bolt. The joint type of the specimens studied was single-bolt, double-lap, which is a standard test configuration in ASTM for composite joints. Interference-fits with different interferences and Sliding-fit were considered. During static tensile testing, the deformation of the bearing hole was measured by extensometer. According to ASTM D 5961 standard test method, the static strength and the static bearing strength defined as the bearing load at which the pin relative displacement is deformed to 4％ the pin diameter (4％D) were obtained. Experimental results show that suitable interference can increase the static strength in comparison with the Sliding-fit case, and excessive interference can decrease the static strength. For the composite (T700/QY8911) and laying studied in this paper, when the interference is 0.5％, the static strength is increased by 2.8％; but when the interference is 3％, the static strength is decreased by 1. 9％, comparing with the Sliding-fit joints.
composite interference-fit joints blind pumping bolt sliding-fit joints high lock bolt bearing strength
Wei Jingchao Jia Purong Jiao Guiqiong
Department of Engineering Mechanics, Northwestern Polytechnical University,Xian 710129, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
828-831
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）