Stress-strength Interference Model Based on Different Strength Degradation

Three kinds of strength degradation function are built under the circumstance of strength degradation with time for the effect of random stress.The deterioration process is modeled as a stochastic process and a stochastic respectively when considering strength aging degradation.The process of stress acting is described with the Poisson process,and the time-dependent reliability models of component are built with the probability equation when strength degenerates.