Effect of Drilling Process on Fatigue Life of Open Holes

摘要：

In this paper, dog-bone specimens which the holes are drilled by the traditional drilling process and advanced Winslow drilling process, are fatigue tested to study the effect of drilling pr ocess on fatigue behavior of open holes. Based on the equivalent initial flaw size method and coincidence criterion, the initial fatigue qualities of holes with two different drilling processes are calculated. Fatigue fracture surfaces are analyzed by stereomicroscope. The results show that: The location where the fatigue crack initialization is unchanged when these two different drilling process es are used. The longer the fatigue life is, the more the dispersibility of fatigue life is. With the Winslow drilling process, equivalent initial flaw size is smaller than 0.125mm. Winslow drilling process meets the requirement of coincidence criterion.

关键词： Fatigue life Drilling process Fracture surface Initial fatigue quality

作者: Weiping Gu Honglu Xu Jun Liu Zhufeng Yue

作者单位: School of Mechanics, Civil Engineering & Architecture, Northwestern Polytechnical University,Xian, China,710072

会议类型: 国际会议

会议名称: 2008 National Academic Symposium for Ph. D. Candidates and Tri-University Workshop on Aero-Structural Mechanics & Aerospace Engineering(NASPCTUWMAE2008)(2008年国际航天航空工程会议暨2008年博士生学术会议(力学))

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2008-10-23（万方平台首次上网日期，不代表论文的发表时间）