环境温度对飞机导线失效影响的分析及计算摘要飞机导线是飞机电气线路互联系统的重要组成部分，它连接着飞机的各个位置的电力装置，一旦失效，将会导致整个飞机电路的运行受到影响。飞机导线的失效因素主要是由环境温度造成的。本文通过失效物理分析的方法分析环境温度对飞机导线失效的影响，并建立导线寿命分布模型。分析了飞机导线在温度作用下失效的阿伦尼斯方程的推导及相关参数的计算方法，并对加速寿命实验数据的分析方法进行了研究。根据加速寿命实验数据，利用matlab计算得到导线寿命模型相关参数，得到了导线失效率随着温度温度的升高而增大的关系。关键词：飞机导线，环境温度，寿命模型，失效率AnalysisandcalculationofplanewirefailurebytheeffectofenvironmentaltemperatureAbstractTheplaneconductorisanimportantpartofaircraftelectricalcircuit,powerdevice,thelocationofeachconnectingflightoncefailure,willcausetheentireaircraftcircuitoperationaffected.Failurefactorsofaircraftwireismainlycausedbytheenvironment.Throughthefailurephysicalanalysiseffectofenvironmentaltemperatureontheairplanecablefailure,andestablishthemodeloflifedistribution.ThecomputationmethodofparametersundertemperatureAllenniceequationanalysis,researchtheaccelerationlifetestdataanalysismethod.Accordingtotheacceleratedlifetestdata,calculationofrelatedparametersareobtainedbyusingMATLABwirelifemodel,relationshipbetweenwirefailurerateincreaseswithincreasingtemperaturewasobtained.Keywords:aircraftwiring;environmenttemperature;lifemodel;failureratei目录摘要........................................................................iAbstract......................................................................ii第一章引言..................................................................1第二章飞机导线故障............................................................22.1飞机导线故障综述.......................................................22.2环境温度对飞机导线的影响...............................................32.2.1温度对导线的影响..................................................32.2.2湿度对导线的影响..................................................32.2.3冷热温度冲击对导线的影响..........................................3第三章导线失效率的计算方法研究................................................53.1基于Bradley-Terry模型导线失效率计算方法...............................53.1.1导线可靠性数据模型................................................53.1.2筛选专家评判结果..................................................63.1.3模型的修正........................................................73.2基于阿伦尼斯模型导线失效率计算方法.....................................83.2.1阿伦尼斯模型数学推导..............................................83.2.2阿伦尼斯模型特点.................................................10第四章加速寿命试验...........................................................104.1产品寿命介绍..........................................................114.2加速寿命试验介绍及目的................................................114.2.1加速模型介绍.....................................................114.2.2加速寿命试验的目的...............................................124.3加速寿命试验内容.......................................................124.3.1温度加速.........................................................124.3.2温湿度加速.......................................................134.3.3温差加速.........................................................134.3.4高温...
