Two-Stage Replacement Strategies
Two-Stage Replacement Strategies
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两阶段更换策略
DOI：
10.1057/jors.1963.8
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发表时间：
1963
影响因子：
3.6
通讯作者：
D. Bartholomew
中科院分区：
文献类型：
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作者：
D. Bartholomew
考虑如下更换问题：N个容易失效的部件可分为两组，一组中的个体重置成本高于另一组中的个体重置成本。需要一种战略来最大限度地减少替换成本。在某些情况下，最便宜的策略是，当每件商品失败时，用一件新的商品替换。然而，本文表明，这一政策通常可以通过所谓的两阶段政策来改进。在两阶段策略中，一组中的故障被新项目替换；另一组中的故障被第一组中已经运行的项目替换。在某些情况下，创建第二个小组是值得的。文中给出了计算任何寿命分布的最优两阶段策略的公式，但重点是在一般条件的表述下，两阶段方案优于简单的替换。文中还简要介绍了一些推广和推广。
The following replacement problem is considered.Nitems, which are subject to failure, can be divided into two groups distinguished by the fact that the individual replacement cost in one group is higher than in the other. A strategy is required to minimize replacement costs. In some cases the cheapest policy is to replace each item, when it fails, by a new item. However, the paper shows that this policy can usually be improved upon by what is called a two-stage policy. In a two-stage policy the failures in one group are replaced by new items; those in the other group are replaced by items already operating in the first group. Under some circumstances it is shown to be worth while to create a second group. Formulae are given for calculating the optimum two-stage strategies for any life distribution, but the emphasis is on the formulation of general conditions under which two-stage schemes are preferable to simple replacement. Some extensions and generalizations are briefly indicated.