Reliability modeling and assessment are critical issues for complex engineering systems. It is challenging to accurately assess the reliability for such systems because of many factors such as the failure competing or dependencies, impact from external environments, and epistemic uncertainty associated with parameters of component failure/degradation models. According to the failure mechanism, most of the industrial systems and their components, such as bearings, compressor blades of airplane engines, and primary coolant systems of nuclear power plants, fail not only due to the internal deterioration which is also called “degradation failure,” such as wear, crack growth, erosion, and corrosion, but also due to the cumulative damage from external random shocks, such as vibration and power surge, which could cause a sudden “catastrophic failure.”

中文翻译：

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模糊环境下竞争退化和随机冲击系统的可靠性评估

可靠性建模和评估是复杂工程系统的关键问题。由于许多因素，例如故障竞争或依赖性、外部环境的影响以及与组件故障/退化模型参数相关的认知不确定性，准确评估此类系统的可靠性具有挑战性。根据失效机理，大多数工业系统及其部件，如飞机发动机的轴承、压气机叶片、核电站的一次冷却剂系统等，其失效不仅是由于内部劣化，也称为“退化失效”， ”，例如磨损、裂纹扩展、侵蚀和腐蚀，而且由于振动和电涌等外部随机冲击的累积损坏，也可能导致突然的“灾难性故障”。