摘要
对出口澳大利亚货车的20个已运用车钩钩舌进行了疲劳试验,并对裂纹扩展过程进行了全程监测。根据疲劳试验结果,运用疲劳应用统计学的单侧容限系数法,基于95%存活率和90%置信度得出了剩余寿命与对应的裂纹长度的关系,可为出口澳大利亚货车车钩钩舌日常检修提供参考。
The fatigue tests are carried out on 20 coupler knuckle exported to Australia freight cars,and the whole process of crack propagation is monitored.According to the fatigue test results,the one-side tolerance factor method of fatigue application statistics is used to determine the crack limit corresponding to various remaining useful life based on 95%survival rate and 90%confidence.
作者
孟庆民
王岩
MENG Qingmin;WANG Yan(Dalian R&D Center,Qiqihar Rolling Stock Co.,Ltd.,Dalian 116052,China)
出处
《铁道车辆》
2022年第3期131-133,共3页
Rolling Stock
关键词
车钩
钩舌
疲劳试验
裂纹长度
剩余寿命
coupler
knuckle
fatigue test
crack length
remaining useful life
