Life Evaluation for Carbon Fiber Composite Material by Using Integral Best Linear Unbiased Estimation

Combined with interval statistic, we present the integral estimation method and establish a regression equation for type-I censored data in this paper. The best unbiased estimators of parameters, standard deviation and their covariance are also given. We discuss the confidence limits of the acceleration equation and percentiles for Weibull distribution in detail. According to the presented method, the cross information among test data in different stresses are analyzed as an integration. Its information quantity is much bigger than traditional group test method.