对大型机械设备的可靠性研究  

Study on the reliability of large-scale machinery and equipment

作　　者：肇慧[1] 秦克林[1] 

机构地区：[1]黑龙江工程学院 数学系,黑龙江哈尔滨150001

出　　处：《高师理科学刊》2013年第1期10-13,共4页Journal of Science of Teachers＇College and University

基　　金：黑龙江省教育厅科学研究资助项目(12521446)

摘　　要：为了研究各异材质的大型设备的使用寿命t和使用可靠度R的关系,针对大型机械在已有数据为无失效数据,寿命服从三参数Weibull分布的情况下,提出了一种全新的可靠度评估方法.此种方法是在三参数Weibull分布的形状参数下限为已知的情形下,将所有的无失效数据进行叠加,以此在已知大型机械设备寿命下限和置信度时,建立模型并得到大型机械设备在使用时的可靠度估计的单侧置信下限,并据此判断可靠度是否满足一定条件和工程上的要求.结果表明,该方法在工程应用中适用度高.In order to research the relation on life t and reliability R of the different materials large equipment, gave a new reliability assessment method when life follows the case of the three-parameter Weibull distribution for not-failure data. Gave the model to computes one side lower confidence limits of reliability when lower limit of shape parameter of three-parameter Weibull distribution is known and no failure life data overlay, confidence limits and life is known. This method can judge the reliability to meet or not the certain engineering requirements. The results indicated that the method is easy to be applied in engineering.

关 键 词：大型机械设备寿命 无失效数据 可靠性评估 WEIBULL分布 

分 类 号：O157.5[理学—数学]