Abstract:

The method based on degradation distribution is a widely used reliability modeling method, but there is lack of research on the accelerated degradation test. To avoid the problem that the reliability model established by experience or subjective judgment may result in inaccurate evaluation of reliability, the reliability evaluation method based on degradation distribution is studied under accelerated stresses. The main feature is that the acceleration factor constant principle is utilized to deduce the changing rules of model parameters with accelerated stresses, and then the reliability model is established. Results show that the proposed evaluation method avoids the shortage that traditional methods may cause inaccurate evaluations.