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在以可靠性为中心的维修（ＲＣＭ）分析中，通常对由机械磨损引起的故障模式采用功能检测策略加以预防，而制定此类问题的功能检测策略时需确定下列参数：①潜在故障状态（用磨损量表示），检测时如果发现产品磨损量达到或超过该状态，应当予以更换；②检测的间隔期，分首次检测间隔期与重复间隔期。借助于维修延迟时间的概念并假设磨损过程服从Ｗｉｅｎｅｒ过程，建立基于风险、可用度与费用的功能检测模型，用于确定上述检测参数。
In reliability-centric maintenance (RCM) analysis, failure modes caused by mechanical wear are usually precluded by functional testing strategies that determine the following parameters: Potential failure status With the amount of wear said), if the test found that product wear reached or exceeded the state, it should be replaced; ② test interval, the first test interval and repeat interval. With the concept of maintenance delay time and assuming the wear process obeys the Wiener process, a functional testing model based on risk, availability and cost is established to determine the above-mentioned testing parameters.