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Reliability engineering approach to achieve RCM for mechanical systems — 2012

机译：机械系统实现RCM的可靠性工程方法-2012

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摘要

The foundation for reliability-centered maintenance is the characterization of reliability failure models. Reliability is currently defined as the probability that a part will function without failure for designated mission durations under specified conditions of use. This paper proposes that reliability should be defined as the probability that a part will function without failure under risk characterized stress loads for specified operational and ambient conditions of use. Empirical reliability math modeling suggests that time does not cause part failure and therefore Time-to-Failure, TTF, based reliability math models are meaningless. Findings from current research in reliability math modeling show that failure mechanisms cause part failure, and that stress based reliability math models are meaningful. Reliability math models are fit from failure analysis and (1) characterize part failure condition indicators that allow implementation of condition-based maintenance, or (2) characterize part hazard functions that allow implementation of stress-directed maintenance.
机译：以可靠性为中心的维护的基础是可靠性故障模型的表征。可靠性目前被定义为在指定的使用条件下，零件在指定的任务持续时间内不会发生故障的功能。本文建议将可靠性定义为在特定的使用条件和使用条件下，在具有风险特征的应力负载下，零件正常工作而不发生故障的概率。经验可靠性数学模型表明时间不会导致零件故障，因此基于故障时间（TTF）的可靠性数学模型是没有意义的。当前在可靠性数学模型研究中的发现表明，失效机制会导致零件失效，而基于应力的可靠性数学模型是有意义的。可靠性数学模型可通过故障分析得到拟合，并且（1）表征允许执行基于状态的维护的零件故障状态指标，或者（2）表征允许进行针对应力的维护的零件危害功能。

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