The purpose of this paper is to study the role of the relevation transform, where a failed unit is replaced by a used unit with the same age as the failed one, as an alternative to the policy based on the replacement by a new one. In particular, we compare the stochastic processes arising from a policy based on the replacement of a failed unit by a new one and from the one in which the unit is being continuously subjected to a relevation policy. The comparisons depend on the aging properties of the units under repair.

翻译：本文旨在研究更新变换在可靠性中的作用，其中失效单元被一个与失效单元使用时间相同的旧单元替换，以此作为基于新单元替换策略的替代方案。特别地，我们比较了基于失效单元替换为新单元的随机过程与持续采用更新变换策略的随机过程。这些比较取决于维修单元的老化特性。