摘要
本文采用落锤式冲击试验机对碳纤维/玻璃纤维混杂增强复合材料(C/GFRP)样块开展不同冲击能量下的撞击试验,进而制备了含有模拟低速冲击损伤检测试件,研制了红外脉冲雷达热波成像检测系统,并利用该系统对不同冲击能量损伤试件开展检测试验研究。采用多种特征提取算法(双路正交解调算法、互相关匹配滤波算法及主成分分析算法)对热辐射响应信号(热波信号)进行数据分析与特征提取,实现了C/GFRP试件冲击损伤脱粘区域的有效识别,得到了不同冲击能量与脉冲雷达热波特征的映射关系。针对C/GFRP平顶孔模拟脱黏缺陷开展红外脉冲雷达热波成像检测试验研究,验证了红外脉冲雷达热波成像检测技术的探测能力。试验结果表明,红外脉冲雷达热波成像检测技术可以实现对C/GFRP低速冲击损伤的有效检测。
In this paper,an impact testing machine is employed to conduct impact tests on carbon fiber/glass fiber hybrid reinforced composite(C/GFRP)samples under different impact energies,and then test samples containing simulated low-speed impact damage are prepared.An infrared chirp-pulsed radar thermography system is built and used to detect the damaged specimens under different impact capacities.A variety of feature extraction algorithms(Dual orthogonal demodulation(DOD),Cross correlation matched filtering algorithm(CC),and principal component analysis(PCA))are proposed to efficiently extract the thermal image sequence characteristics,and the impact damage and debonding area of the C/GFRP specimens can be effectively identified.The chirp-pulsed radar thermography is carried out for the simulated debonding defect of the C/GFRP flat bottom holes(FBHs),and the detection capability of the chirp-pulsed radar thermography is investigated and clarified.The experimental results demonstrate that infrared chirp-pulsed radar thermography can effectively detect the impact damage and debonding defects of C/GFRP.
作者
王飞
史倩竹
高明宇
刘俊岩
徐丽霞
刘丽霞
王扬
陈明君
岳洪浩
Wang Fei;Shi Qianzhu;Gao Mingyu;Liu Junyan;Xu Lixia;Liu Lixia;Wang Yang;Chen Mingjun;Yue Honghao(Harbin Institute of Technology,Harbin 150001,China;Beijing Satellite Manufacturing Co.,Ltd.,Beijing 100094,China)
出处
《航空科学技术》
2023年第2期78-85,共8页
Aeronautical Science & Technology
基金
航空科学基金(2020Z057077001)
中国博士后创新人才支持计划(BX2021092)
黑龙江省自然科学基金(LH2022F026)。
关键词
C/GFRP
冲击损伤
红外成像
脉冲雷达热波
无损检测
C/GFRP
impact damage
infrared thermography
chirp-pulsed radar thermal-wave
nondestructive testing
