Study on in-service structural health monitoring of full-scale composite horizontal tail
In-service structural health monitoring (SHM) technology for composites,including in-time estimation of damage occurrence,size and extension,will increase safety performance through condition-based operation,and improve fleet management efficiency through condition-based maintenance.In this study,Lamb wave-based in-service SHM technology for full-scale composite horizontal tail is developed.Starting from analysis of structural layout and load distribution of composite horizontal tail,strategy of in-service includes damage rapid monitoring stage and damage imaging diagnosis stage SHM was presented.The damage rapid monitoring method was firstly presented based on signal rapid collection network and spearman correlation.Then,damage imaging diagnosis method was presented based on signal complete collection network and signals canonical correlation.Subsequently,the efficiency of the technology is illustrated by CFRP T-joint SHM experiment.DRM threshold and DID threshold was determined by the result.Finally,the efficiency of the technology on real aircraft structure was confirmed by in-service SHM of full-scale composite horizontal tail under static load.Results of these experiments show that the rapid monitoring method is effective for monitoring damage occurrence and extension tendency in real time; damage imaging diagnosis result is in both aircraft component and real aircraft structure.
In-service structural health monitoring full-scale composite horizontal tail Lamb wave damage rapid monitoring damage imaging diagnosis
Zhanjun Wu Dongyue Gao Yishou Wang Gorgin Rahim
State Key Laboratory of Structural Analysis for Industrial Equipment Faculty of Vehicle Engineering and Mechanics,School of Aeronautics and Astronautics Dalian University of Technology,Dalian 116024,P.R. China
国内会议
北京
英文
663-676
2013-09-10（万方平台首次上网日期，不代表论文的发表时间）