Abstract
An approach to system reliability under wearout and overload failure is outlined, where conventional models for these mechanisms are used to define wear-dependent failure rates in terms of response “peak” statistics. System-failure rates are seen to be bounded above, making predictions based on the Weibull distribution too conservative at the “tail”, while certain normal-derived predictions are too optimistic. However, Weibull distributions are found quite useful in approximating the various response peak statistics for certain impulsive-noise environments encountered in random vibrations and elsewhere. The pitfalls of misusing “normalized” curves of reliability are cited and the need for future investigations is expressed.

This publication has 0 references indexed in Scilit: