Reliability analysis of very-high-cycle fatigue crack initiation for a high strength steel

摘要：

　　A high carbon chromium steel was tempered at 150℃,180℃,and 300℃ to form three groups of specimens,and very-high-cycle fatigue (VHCF) tests were performed via rotating bending to investigate scatter properties of S-N curves.Experimental results show an increasing tendency of life scatter with the increasing of tempering temperature.Influencing factors and mechanism of fine-granular-area (FGA) were discussed.Crack growth rate and life proportion of FGA were also estimated.At last reliability analysis based on a modified Tanaka-Mura model was carried out to evaluate the sensitivity of inclusion size,stress,and ΔKFGA for the life of VHCF crack initiation.

作者: Z.Q.Lei J.J.Xie C.Q.Sun X.L.Liu Y.S.Hong

作者单位: State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China

会议类型: 国际会议

会议名称: International Conference on Airworthiness & Fatigue -7th ICSAELS Series Conference(大飞机安全性能与疲劳国际会议)

会议地点: 北京

会议语种:英文

页码: 157-157

在线出版日期: 2013-03-24（万方平台首次上网日期，不代表论文的发表时间）