A unified classical maximum likelihood approach for estimating P-S-N curves of the three commonly used fatigue stress-life relations, namely three parameter, Langer and Basquin, is presented by extrapolating the classical maximum likelihood method to the Langer relation.

This paper uses several models to fit test data and calculates the lifetime,at last,analyzes and compares these models to find the fittest life model in oil-paper insulation.

In this paper,based on contamination failure mechanism and material outgassing characteristic,an accelerated life model for performance degradation of Oxford type stirling cryocooler is established,and the physical meanings of model parameters are discussed.

Based on experimental data and finite element analysis results,a low-cycle fatigue life model is proposed for the powder metallurgy superalloys under multiaxial stress states.

The new method to establish the lifetime model of motor drive system1.

Concerning this problem and from the heat stress fatigue failure point of view,influential factors of the system life and failure mechanism of its weaknesses is analysized in this paper,and presents a new method to establishing lifetime model of the system by taking the operating conditions and output torque of the motor as inputs is proposed.