改进的Wiener退化模型对一回路管道的可靠性评估  

Application of Improved Wiener Degradation Model in Reliability Assessment for Primary Loop Tube

作　　者：李少帅[1,2] 陈玲[1] 蔡琦[1] 

机构地区：[1]海军工程大学核能科学与工程系 [2]中国人民解放军92351部队59分队

出　　处：《核动力工程》2016年第6期146-149,共4页Nuclear Power Engineering

摘　　要：Wiener退化过程模型能够良好地解决监测数据存在的波动性,已逐渐成为退化数据处理的热点模型。然而,带漂移的Wiener退化过程模型主要针对线性退化轨迹模型,且要求同批次产品漂移参数为固定值,这限制了其使用范围。本研究对Wiener模型进行改进,使其具备处理非线性问题的能力,以满足评估对象的要求。将漂移参数假设为随不同研究对象而不同的随机变量,对Wiener退化过程模型进行补充完善。最后基于反应堆一回路管道裂纹数据对其进行可靠性分析,通过实例应用证明了模型的合理性。As it can well solve the data volatility, Wiener degradation model is becoming a popular model for degradation data treatment. However, Wiener degradation model with drifting is aimed at linear degenerate, and even it demands product in same batch with fixed degenerate drift parameter, which limits the range of its application. In this study, Wiener model is adapted to non-linear problems, so that it could be used in more target of evaluation. Shift parameter of the model is supposed a variable changing with evaluation target, which is supplement and perfection for Wiener degradation model. At last, reliability of this model is analysed, basing on the data of pipe crack in nuclear reactor primary loop, to prove the rationality of the model.

关 键 词：Wiener退化过程 退化轨迹 漂移参数 一回路管道 可靠性 

分 类 号：TL361[核科学技术—核技术及应用]