The Stress-Strength Interference Method Applied to Fatigue Design: The Independence of the Random Variables

F. Menan, P.-A. Adragna, M. François
2015 Procedia Engineering  
The use of the probabilistic analysis called Stress-Strength Interference Method (SSIM) applied to the endurance limit approach is being analyzed. Mean stress effect is often included to modify this fatigue limit. Plus, through the use of K factors, the fatigue limit is usually modified to account for the influence of loading mode, temperature, component size, corrosion, roughness... A necessary assumption of the SSIM is that stress and strength are independent. In this study, the independence
more » ... , the independence of stress and strength is discussed. It appears that those variables may be in fact dependent. This error may lead to unconservative reliability predictions.
doi:10.1016/j.proeng.2015.12.656 fatcat:vffmoy4errajrjoxe3mahqmh5u