Rubber Aging Performance Prediction and Residual Life Analysis Based on Wiener Stochastic Process Model
The prediction of rubber aging performance and life analysis are the key technologies in rubber engineering applications.The accelerated aging tests of silicone rubber at different temperatures(95℃,105℃,115℃,125℃)were carried out.According to the properties of silicone rubber and the requirements of its application process,the silicone rubber was selected to be permanently compressed deformation as the token of aging properties.Based on the aging mechanism of rubber,the random characteristics of aging properties of rubber were analyzed,and the aging model of rubber was established by Wiener stochastic process,the probability density of prediction performance at each test point is given.The results show that the maximum prediction error is 10.15% .Based on the theory of Wiener stochastic process,the residual life analysis of silicone rubber was carried out,and the precision of the life analysis method was analyzed.The results showed that the maximum error of life analysis was 11.76%,and the life analysis method was credible,the result of calculation is reliable.By using Arrhenius acceleration model,the silicone rubber life at different acceleration temperature was given.The average life of silicone rubber at room temperature of 25℃was calculated to be 76 years.
wiener processrubber aging performancetestlife analysistemperature
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NSTL
万方数据
