摘要
根据铝合金材料疲劳试验统计分析方法,求出了A6005A-T6铝合金焊接接头平滑样和带余高试样的P-S-N疲劳曲线,基于该曲线对不同应力集下的试验数据进行了可靠性分析,探讨了S-N曲线与P-S-N曲线之间的优劣性。研究结果表明,如果用高存活率、高置信度的P-S-N曲线进行设计和寿命估算,其结果将更有利于安全。
According to the statistical analysis method of fatigue test of aluminum alloy materials,the P-S-N fatigue curves of A6005A-T6 aluminum alloy welded joints were obtained for both smoothness samples and samples with height.Based on this curve,the reliability of experimental data under different stress levels were analyzed,the pros and cons between the S-N curve and the P-S-N curve were discussed.The results of the study showed that if the design and lifetime estimation were performed with a high-survival,high-confidence P-S-N curve,the results would be more conducive to safety.
出处
《焊接技术》
2018年第12期41-46,6,共6页
Welding Technology
作者简介
王远霏(1979-),男,河北唐山人,硕士,高级工程师,主要从事轨道交通车辆前瞻、共性等新技术研究。以及车辆关键系统健康管理及使用寿命评估应用研究.
