Bayesian Estimation of Exponentiated Weibull SSPALT Model using Type-I Hybrid Censoring

Based on type-I hybrid censoring, we consider estimation of the exponentiated Weibull (EW) distribution under step-stress partially accelerated life tests (SSPALT) well-known test to obtain information on the lifetime distribution in the life test. A type-I hybrid censoring scheme is a mixture of type-I and type-II censoring schemes. In this paper, we introduce a model in SSPALT and determine likelihood functions in type-I hybrid censoring. Maximum likelihood estimates of the model parameters and an acceleration factor are obtained by Newton Raphson method. Also, we obtain Bayes estimates. The model parameters and an acceleration factor are estimated using Lindley s approximation under a squared error loss (SEL) function. Furthermore, we obtain simulation results of the estimators.