QSTE500后悬架摆臂失效分析  

Failure Analysis of Rear Suspension Swing Arm of QSTE500

作　　者：佘祖新[1,2] 王长朋 刘威[3] 张凯 梅华生[1,2] 牟献良[1,2] SHE Zu-xin;WANG Chang-peng;LIU Wei;ZHANG Kai;MEI Hua-sheng;MOU Xian-liang(Southwest Research Institute of Technology and Engineering,Chongqing 400039;Chongqing Enterprise key Laboratory for Environmental Effect and Protection,Chongqing 400039;Shanxi University of Science&Technology,Xi’an 710021)

机构地区：[1]西南技术工程研究所,重庆400039 [2]环境效应与防护重庆市重点实验室,重庆400039 [3]陕西科技大学,西安710021

出　　处：《环境技术》2018年第A01期68-71,76,共5页Environmental Technology

摘　　要：研究某型汽车QSTE500后悬架摆臂在使用过程中出现开裂失效的原因。通过宏观分析、光学显微镜和扫描电镜观察、力学性能测试的方法对后悬架摆臂断裂失效原因进行了分析。结果表明,后悬架摆臂有4个位置发生开裂,开裂位置均位于焊缝处,沿焊缝扩展。后悬架摆臂的1#位置为快速过载疲劳开裂,2#开裂位置为过载疲劳断裂,3#断裂位置和4#断裂位置为典型疲劳开裂。The fracture failure reasons of rear suspension swing arm of QSTE500 for an automobile during its service time are researched by means of macroscopic analysis,optical microscopy and scanning electron microscopy observation,and mechanics property analysis.The results showed that four parts happened with fracture in welded seams.The fracture reason of 1#was rapid overload fatigue cracking,2#was overload fatigue fracture,3#and 4#were typical fatigue cracking.

关 键 词：QSTE500 疲劳断裂 失效分析 

分 类 号：TM315[电气工程—电机]