Opportunity-based block replacement
نویسندگان
چکیده
منابع مشابه
Opportunity - based block replacement
In this paper we consider a block replacement model in which a component can be replaced preventively at maintenance opportunities only. Maintenance opportunities occur randomly and are modelled through a renewal process. In the first, theoretical part of the paper we derive an optimality equation and show that the optimal opportunity block replacement policy can be described as a so-called one...
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We consider opportunity-based age replacement using nonparametric predictive inference (NPI) for the time to failure of a future unit. Based on n observed failure times, NPI provides lower and upper bounds for the survival function for the time to failure Xn+1 of a future unit, which lead to upper and lower cost functions, respectively, for opportunitybased age replacement based on the renewal ...
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The block replacement policy with no replacement at failure means that a unit is always replaced at fixed time, but not replaced at failure. In this paper, the lifetime of the unit is assumed to be an uncertain variable, the model of expected cost per unit time following no replacement at failure policy is proposed, and the existence condition of the optimal replacement time is given. Furthermo...
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Block replacement policy is a type of preventive replacement policies where the units are always replaced at failure or at a scheduled time periodically. Assuming the lifetimes of the units are uncertain variables, this paper studies the block replacement policy in an uncertain environment. To deal with the different constraints a decision maker may face, three different criterions are used to ...
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In the following the symbol 0 is used to denote the composition of functions. A superscript of the form (p) where p is a nonnegative integer will indicate the p-th derivative of a function. For example, if Hand g are differentiable functions, then Hog(I)(t) = ftH(g(t)). Wherever used, K1, K2, ... will represent appropriate constants. E and P will be used for expectation and probability, respect...
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ژورنال
عنوان ژورنال: European Journal of Operational Research
سال: 1991
ISSN: 0377-2217
DOI: 10.1016/0377-2217(91)90092-a