Statistical Evaluation on Cumulative Damage Property of Aluminum Alloy Welded Joint under Multi-stage Loading

摘要：

Two-stage loading tests corresponding to high-low loading and low-high loading were performed to clarify the cumulative damage properties of two kinds of aluminum alloy welded joints such as the corner joint and butt joint. As a result, the logarithmic value of cumulative damage can better be characterized by the normal distribution in accordance with the Komogorov-Smirnov goodness of fit test. The proposed linear cumulative damage model can better reflect the scatter characteristic of test data, as well as the newly developed nonlinear cumulative damage model can better characterize the effects of load sequence and load level on fatigue damage value, which was verified with the obtained test data.

关键词： Aluminium alloy Weld fatigue Cumulative damage Loading sequence

作者: Li Wei Li Qiang Wang Ping

作者单位: Laboratory for Structural Strength Testing (Beijing Jiaotong University), China National Accreditati Laboratory for Structural Strength Testing (Beijing Jiaotong University), China National Accreditati Institute of Oceangraphic Instrumention, Shandong Academy of Science, Qingdao 266001, China

会议类型: 国际会议

会议名称: The 2nd International Conference on Advances in Product Development and Reliability(第二届产品开发与可靠性进展国际会议 PDR2010)

会议地点: 沈阳

会议语种:英文

页码: 522-526

在线出版日期: 2010-07-28（万方平台首次上网日期，不代表论文的发表时间）