Failure Model Analysis And Life Evaluation Of The Aftermarket Data Of Automobile Parts Based On Weibull Distribution

Weibull distribution is the product life test and data analysis of the basic theory of reliability, in the actual engineering has been widely applied in data analysis, and weibull distribution is very suitable for the life of the mechanical and electrical products failure forms, because it can make use of the optimization of the estimated parameter values easily infer its failure probability distribution, and so are widely used to the life of many products reliability data analysis and processing.Now the coming of the era of big data, with the expansion of the demand of engineering data processing, the application of weibull more extensive and practical, the analysis result is in line with practical and reliable.Weibull distribution to exponential distribution and normal distribution is a continuous distribution, the probability distribution of it can be used to describe many unknown factors o n the failure data, the influence of the life of the mechanical parts of weibull distribution in practical engineering is widely used to prove the reliability of the auto parts conform to the weibull distribution, and now with the mass production, the center of the automotive after-sales maintenance data in large, failure mode is not standard, how to use these data reflect the reliability of auto parts, auto parts supplier, the company forecast the life of the parts is still a topic worth studying.With the mission task, this master thesis under the guidance of tutor, respectively, using the five heavy three parameters, the triple two parameter weibull distribution analysis and classification by type of single analysis under the condition of nonlinear constraints and Matlab auxiliary calculation for automotive after-sales service in the CD machine fault mileage records for processing, car CD player after the failure data of weibull distribution model is established by optimization of estimated parameters, identify the car CD machine general failure probability distribution of failure mode and the corresponding reliability failure data analysis for auto parts use provides a feasible scheme.