基于动车组运营安全的PCBA失效分析和寿命研究  

PCBA failure analysis and lifetime study based on EMU operation safety

作　　者：李连峰 周菁 孟祥亮 胡元元 LI Lianfeng;ZHOU Jing;MENG Xiangliang;HU Yuanyuan(CRRC Qingdao Sifang Co.,Ltd.,Qingdao,Shandong 266111,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266111

出　　处：《轨道交通材料》2024年第3期54-59,共6页MATERIALS FOR RAIL TRANSPORTATION SYSTEM

摘　　要：印刷电路板组装件(PCBA)在动车组上应用广泛,其运行过程中的功能失效、误报、误操作等严重影响动车组运营安全,通过对不同型号动车组、不同使用年限、不同功能的92块PCBA进行了高压绝缘测试、高温老化测试、振动测试、焊点失效研究、温度冲击老化试验、CAF试验等失效分析和寿命研究,运用先进的阿伦尼斯(Arrhenius)模型分析焊点疲劳寿命和Coffin-Mason模型分析基于塑性应变的疲劳寿命,最终得出PCBA的使用寿命大于14.26年,小于17.26年。PCBA的失效分析和使用寿命研究,为动车组设计、制造、检修提供理论依据。Printed circuit board assembly(PCBA)is widely used in EMUs,and its functional failures,false alarms and misoperation during operation could seriously affect the operation safety of EMU.Through the high voltage insulation test,high temperature aging test,vibration test,solder joint failure study,temperature impact aging test,CAF test and other failure analysis and life study of 92 PCBAs on different models of EMUs,with different service life and different functions.Advanced Arrhenius model is used to analyze the fatigue life of solder joints,and Coffin Mason model is used to analyze the fatigue life based on plastic strain,and finally it’s concluded that the service life of PCBA is more than 14.26 years and less than 17.26 years.The failure analysis and service life study of PCBA provide theoretical basis for EMUs’design,manufacture and maintenance.

关 键 词：印刷电路板组装件(PCBA) 失效分析 寿命研究 动车组 

分 类 号：U270.64[机械工程—车辆工程]