Time-varying damage distribution of composite structures for a certain type of aircraft  

作　　者：Jinxin DENG Ziqian AN Peijie YUE Xiaoquan CHENG 

机构地区：[1]School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China

出　　处：《Chinese Journal of Aeronautics》2025年第3期386-402,共17页中国航空学报(英文版)

摘　　要：The damage distribution of the same type of aircraft in similar service environments should be similar. Based on this assumption, to perform the maintenance and repair of aircraft composite structures, the damage of composite structures in a certain type of aircraft were investigated. The time-varying damage distribution model was established and verified based on the damage of a 16-aircraft fleet. The results show that the quantitative proportions of structural damage are 74% for skin delamination, 22% for stringer delamination and 3% for stringer-skin interface debonding. The amount of structural damages increases linearly with service time while the proportion of different damages does not change. As the service time increases, the geometric parameter distribution of damage for the same type of aircraft gradually converges, which can be approximated using the same function. There are certain differences in the proportion and geometric parameter distribution of damages among different components and locations, and the differences do not change over time.

关 键 词：AIRCRAFT Composite structures Structural damage Damage dis tribution Geonetric parameters 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]