A new method for modeling the reliability of mechanical systems with vanilla-shaped failure rates based on censored and accelerator tests
Volume 6, Issue 3, Autumn 2016, Pages 204-212
rohollah ramezani
Abstract ehavior is a function of the failure rate of some mechanical systems. The conventional Weibull model is not able to fully model the lifespan of such systems with the ohmic refractive index function. In this paper, a new generalized Weibull distribution is used to model the failure rate functions with vanity-shaped behavior. This model is evaluated on three datasets. In these three datasets, in order to reduce the execution time of the lifetime test, accelerator and censored type one tests have been used. The model parameters are also estimated based on the maximum likelihood method. The Akaike indices, the logarithm of the probability function, and the Bayesian information criterion are obtained, indicating the efficiency of this model for the data obtained from performing the lifetime tests. Therefore, the predicted average lifespan has good validity.