ACCELERATED LIFE TESTS WITH AN EXPONENTIAL DISTRIBUTION: A BAYESIAN APPROACH WITH THE GENERALIZED EYRING MODEL AND TYPE II CENSORED DATA

Jorge Alberto ACHCAR[1]

Francisco LOUZADA NETO[2]

§    ABSTRACT: In this paper, we present a Bayesian analysis of the generalized Eyring model considering two stress variables Z and V. We assume an accelerated life test with K combinations of the stress levels Vi and Zi with an exponential distribution for the life data in each combination of stresses and type II censored data. We find the posterior densities of interest considering a noninformative Jeffreys prior for the parameters of the model. In special, we find the marginal posterior density for the mean life time of unities assuming the usual conditions stresses Z1 and V1. We also present an example and some comparisons with the usual exiting methods of analysis of this model.

§    KEYWORDS: Generalized Eyring model; accelerated life tests; type II censored data; Bayesian analysis.

 



[1] ICMS – USP, CP 668 – São Carlos – SP.

[2] DES-UFSCar, CP 676 - São Carlos – SP.