Strength — stress model of the wear-out process, part two
Journal Title: Scientific Journal of Polish Naval Academy - Year 2015, Vol 202, Issue 3
Abstract
In the previous part (i.e. part one) of this paper a differential equation intended to model a wide class of physical failure processes that may take place in technical devices was put forward. What relates model’s applicability — among the multitude of users of technical devices there surely will be ones that find the model to be relevant to real processes that cause their devices to fail. A set of relevant devices comprises these ones that are exploited (in an exact meaning of this word). Let us remember a term strength that is crucial to the model. The failure results from loss of strength that, in turn, is impacted by external stress.In part one we ‘injected’ randomness into physics expressed by means of the differential equation. Parameters that govern failure process in question were treated as random variables. Each failure process ends in failure, so time to failure is the random variable. In part two of this paper we will, with the Monte Carlo method, investigate how variability of process parameters shapes the hazard rate function.
Authors and Affiliations
Antoni Drapella
Keywords
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- EP ID EP78663
- DOI 10.5604/0860889X.1178567
- Views 131
- Downloads 0
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