𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the inverse power laws for accelerated random fatigue testing

✍ Scribed by G. Allegri; X. Zhang

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
473 KB
Volume
30
Category
Article
ISSN
0142-1123

No coin nor oath required. For personal study only.

✦ Synopsis

This paper addresses the usage of inverse power laws in accelerated fatigue testing under wide-band Gaussian random loading. The aim is not at predicting an absolute value of fatigue life but assessing the fatigue damage relative accumulation. The widely accepted inverse power scaling laws in fatigue damage assessment is discussed, reviewing the engineering standards and pointing out their inherent limitations. A physically consistent general scaling law is obtained by rigorous mathematical analysis in the framework of random vibration theory and the rules of safe-life fatigue analysis. Simplifications of the general scaling rule are presented, highlighting conditions under which the current standard practice could provide a correct an acceptable estimation of the relative fatigue damage accumulation.

πŸ“œ SIMILAR VOLUMES

An accelerated life test model with the
An accelerated life test model with the inverse power law
✍ D.S. Bai; S.W. Chung πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 283 KB

## A BSTRA CT Constant and progressive stress accelerated life test models based on the inverse power law and Weibull lifetime distributions are proposed m which the Weibull scale parameter at use condition has a gamma prior distribution and other parameters are unknown constants. Bayes and maximu