Research on High-Velocity Impact Damage Monitoring Method of CFRP Based on Guided Wave  

基于导波的CFRP板高速冲击损伤监测方法研究

作　　者：WANG Yang YANG Xiaofei QIU Lei YUAN Shenfang 汪洋;杨晓飞;邱雷;袁慎芳(南京航空航天大学航空航天结构力学及控制全国重点实验室结构健康监测与预测研究中心,南京210016)

机构地区：[1]State Key Laboratory of Mechanics and Control for Aerospace Structures,Research Center of Structural Health Monitoring and Prognosis,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2024年第S01期60-69,共10页南京航空航天大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51921003,52275153);the Fundamental Research Funds for the Central Universities(No.NI2023001);the Research Fund of State Key Laboratory of Mechanics and Control for Aero-space Structures(No.MCAS-I-0423G01);the Fund of Pro-spective Layout of Scientific Research for Nanjing University of Aeronautics and Astronautics;the Priority Academic Program Development of Jiangsu Higher Education Institu-tions of China.

摘　　要：Carbon fiber-reinforced polymer(CFRP)is widely used in aerospace applications.This kind of material may face the threat of high-velocity impact in the process of dedicated service,and the relevant research mainly considers the impact resistance of the material,and lacks the high-velocity impact damage monitoring research of CFRP.To solve this problem,a real high-velocity impact damage experiment and structural health monitoring(SHM)method of CFRP plate based on piezoelectric guided wave is proposed.The results show that CFRP has obvious perforation damage and fiber breakage when high-velocity impact occurs.It is also proved that guided wave SHM technology can be effectively used in the monitoring of such damage,and the damage can be reflected by quantifying the signal changes and damage index(DI).It provides a reference for further research on guided wave structure monitoring of high/hyper-velocity impact damage of CFRP.碳纤维增强环氧树脂复合材料(Carbon fiber reinforced polymer,CFRP)广泛应用于航空航天领域。该类材料结构在服役过程中可能面临高速冲击的威胁,相关研究主要考虑材料的抗冲击性能,较少进行CFRP高速冲击损伤的监测研究。因此,本文进行了一种基于压电导波结构健康方法的CFRP板高速冲击损伤监测实验。结果表明,CFRP在高速冲击下具有明显的穿孔损伤和纤维断裂现象。同时也表明了导波结构健康监测方法可以有效地应用于此类结构损伤的监测,并且可以通过量化导波信号变化和损伤因子来反映损伤。该研究为CFRP的高/超高速冲击损伤导波结构健康监测的进一步研究提供了参考。

关 键 词：guided waves structural health monitoring(SHM) carbon fiber reinforced polymer(CFRP) high-velocity impact 

分 类 号：TB553[理学—物理]