A Reliability Data Analysis Method Using Mixture Weibull Distribution Model
The weibull distribution plays a crucial role in reliability theory and life-testing experiments. Weibull mixtures are widely used to model lifetime and failure time data, since they exhibit a wide range of shapes for the failure rate function. In this paper, the failure data of crank rod system was analyzed by using mixture weibull distribution model. The distribution parameters of the mixture weibull distribution model were estimated by using maximum likelihood estimation and drawing method. The comparison of fitting degree of failure location between standard weibull distribution model and mixture weibull model was given. Results show that the fitting degree of the failure data in the mixture weibull distribution model is higher than that of the simple weibull distribution model, and it can more accurately described the failure distribution curve of the system in life cycle.
Reliability data analysis Mixture weibull distribution Maximum likelihood estimation Weibull probability plot.
Yingkui Gu Deliang Ge Yaogang Xiong
Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000,China
国际会议
大连
英文
1449-1453
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）