结构使用寿命评定的功能失效概率控制方法  

Structural Function Failure Probability Control Method for Service Life Estimation

作　　者：刘小冬[1] 刘文珽[1] 

机构地区：[1]北京航空航天大学飞行器设计与应用力学系

出　　处：《北京航空航天大学学报》2002年第1期105-108,共4页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：提出了结构关键件功能失效概率、单机功能失效概率和机群功能失效概率的概念 .以二项分布为基础 ,建立了从结构关键件功能失效概率、单机功能失效概率直至机群功能失效概率分析计算模型 ,并建立了基于功能失效概率控制的结构修理时间确定和使用寿命评定方法 。Notions of probability of structural function failure, probability of function failure for one aircraft and probability of function failure for a fleet are presented. Based on the binomial distribution, a calculating model of structural function failure probability for a durability critical component, one aircraft and a fleet is established. It accounts for structural maintenance procedure after a certain service time. An analytical method capable of determining the repair maintenance time and estimating the service life for aircraft structures is developed based on the function failure probability control. A practical aircraft structural service life estimation, as an example, to demonstrate the application of the methodology is given.

关 键 词：飞机结构 耐久性设计 使用寿命 失效概率 攻能失效 寿命评定 概率控制方法 

分 类 号：V215.5[航空宇航科学与技术—航空宇航推进理论与工程]