Mahdi Karbasian - Associate professor in industrial engineering Malek Ashtar University
peyman Nikmard - M. Sc in industrial engineering, Malek Ashtar University
Roghayeh Ramazani - M.Sc in industrial Management, Payam Noor University

Reliability is one of the important concerns of sensitive and complex industries such as military industry, nuclear and aerospace ,In this paper we use Arrhenius - Weibull accelerate life test model to estimation of reliability parameters in a Pyro mechanical system . In this research ,temperature is accelerated factor and we observed failure time of Pyro mechanical system in 3 level 75, 80, 85 degree of centigrade. The results are analyzed by ReliaSoft s ALTA software and the software estimates the maximum likelihood estimation model parameters. The research and innovation in addressing the Pyro mechanical system reliability model is applied for the first time been used on similar topics.

Pyro mechanical Systems, Reliability, Arrhenius-Weibull Stress Life Model, ALTA