Stochastic properties of a cumulative damage threshold crossing model

被引:12
作者
Ebrahimi, N [1 ]
机构
[1] No Illinois Univ, Div Stat, De Kalb, IL 60115 USA
关键词
Poisson process; stochastic ordering; failure rate ordering; IFR; NBU; PF2; property; TP2;
D O I
10.1239/jap/1032374629
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
in this paper we describe a model for survival functions. Under this model a system is subject to shocks governed by a Poisson process. Each shock to the system causes a random damage that grows in time. Damages accumulate additively and the system fails if the total damage exceeds a certain capacity or threshold, Various properties of this model are obtained. Sufficient conditions are derived for the failure rate (FR) order and the stochastic order to hold between the random lifetimes of two systems whose failures can be described by our proposed model.
引用
收藏
页码:720 / 732
页数:13
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