Uncertain process-based data integration and residual lifetime evaluation of PCB in airborne equipment with ADT and field data  

作　　者：Yu WANG Rui KANG Linhan GUO Xiaoyang LI Zhe LIU Xiaohui WANG Weifang ZHANG 

机构地区：[1]Schoool of Reliability and Systems Engineering,Beihang University,Beijing 100191,China

出　　处：《Chinese Journal of Aeronautics》2024年第8期233-245,共13页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62073009).

摘　　要：Accurately evaluating the lifespan of the Printed Circuit Board(PCB)in airborne equipment is an essential issue for aircraft design and operation in the marine atmospheric environment.This paper presents a novel evaluation method by fusing Accelerated Degradation Testing(ADT)data,degradation data,and life data of small samples based on the uncertainty degradation process.An uncertain life model of PCB in airborne equipment is constructed by employing the uncertain distribution that considers the accelerated factor of multiple environmental conditions such as temperature,humidity,and salinity.In addition,a degradation process model of PCB in airborne equipment is constructed by employing the uncertain process of fusing ADT data and field data,in which the performance characteristics of dynamic cumulative change are included.Based on minimizing the pth sample moments,an integrated method for parameter estimation of the PCB in airborne equipment is proposed by fusing the multi-source data of life,degradation,and ADT.An engineering case illustrates the effectiveness and advantage of the proposed method.

关 键 词：Printed circuit board DEGRADATION Data integration Field environment Accelerated degradation testing Parameter estimate 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]