车用发动机连杆的失效分析  

Fault Analysis for the Connecting Rod of an Engine

作　　者：古莹奎[1] 唐淑云[1] 周志博[1] 

机构地区：[1]江西理工大学机电工程学院,赣州341000

出　　处：《机械科学与技术》2011年第2期256-258,共3页Mechanical Science and Technology for Aerospace Engineering

基　　金：江西省自然科学基金项目(2007GQC0654);江西省教育厅科技项目(GJJ09245)资助

摘　　要：通过对车用发动机连杆累积故障数据的分析,对发动机连杆的失效规律、失效原因和失效机理进行研究。从统计学的角度对连杆外反馈可靠性信息,包括产品型号、装机时间、启用时间、报修时间、故障现象、故障模式等进行统计分析,结合Weibull分析方法寻找其失效规律;微观层面,通过对具体失效样本的组织结构、材料属性、工艺特征、热处理工艺及其他可靠性信息的分析,找到其失效的更深层次的原因和失效机理。A failure data analysis method for the connecting rod of an engine is proposed based on the analysis of accumulated failure data.By using this method,the fault law and fault mechanism is determined.The external feedback reliability information of the connecting rod,including product model,assembling time,first using time,report time,failure phenomenon,failure mode,and so on,were analyzed to find the failure law by using statistics and Weibull analysis method.The fault mechanism is found through the analysis of the organization structure,material properties,process features,heat treatment process and other reliability information of the fault sample.

关 键 词：连杆 失效数据 Weibull分析 失效模式 

分 类 号：TP361[自动化与计算机技术—计算机系统结构]