复合材料层合板损伤的延迟累加成像算法
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摘要
由于复合材料结构的各向异性,导致难以准确获得导波的波速和传播时间。因此在使用传统的延迟累加成像算法对复合材料结构进行损伤识别过程中,会造成损伤定位精度的降低。考虑到复合材料的各向异性导致导波在各个方向的波速并不相同,提出了一种改进的延迟累加损伤成像算法。该方法通过利用激励器与成像点以及成像点与传感器之间的方向角,在成像过程中选取了不同的方向波速进行损伤识别。通过一复合材料层合板冲击损伤的监测实验,将所提算法与采用不同方向波速的传统延迟累加成像算法进行对比,对所提方法的有效性进行了验证。实验结果表明:相比于采用单一速度的延迟累加成像算法,该方法的损伤监测误差控制在4%以内。
Due to the anisotropy of composites structures,the accurate wave velocity and time of flight of ultrasonic guided waves were hard to acquired. As a result,the traditional delay-and-sum imaging algorithm was used to identify the damage of composites structures,which reduced the damage localization accuracy. Considering different wave velocity in different direction result of the anisotropy of composites structures,an improved imaging algorithm was proposed. Using the different direction angles from the actuator to the imaging point and from the imaging point to the sensor,the different wave velocity was applied to identify the damage. The validity of the proposed algorithm was assessed by identify the impact damage of laminates composites panel. The results show that the monitoring error of the improved algorithm is below 4%,comparing with the traditional delay-and-sum imaging algorithm using single wave velocity.
Due to the anisotropy of composites structures,the accurate wave velocity and time of flight of ultrasonic guided waves were hard to acquired. As a result,the traditional delay-and-sum imaging algorithm was used to identify the damage of composites structures,which reduced the damage localization accuracy. Considering different wave velocity in different direction result of the anisotropy of composites structures,an improved imaging algorithm was proposed. Using the different direction angles from the actuator to the imaging point and from the imaging point to the sensor,the different wave velocity was applied to identify the damage. The validity of the proposed algorithm was assessed by identify the impact damage of laminates composites panel. The results show that the monitoring error of the improved algorithm is below 4%,comparing with the traditional delay-and-sum imaging algorithm using single wave velocity.
引文
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14唐军君,卢文秀,李峥,等.碳纤维增强复合材料层合板Lamb波衰减特性研究[J].振动与冲击,2016,35(6):75-79Tang Junjun,Lu Wenxiu,Li Zheng,et al.Attenuation characteristics of Lamb wave in carbon fiber reinforced composite laminated plate[J].Journal of Vernation and Shock,2016,35(6):75-79
15张海燕,曹亚萍,于建波,等.采用单个压电传感器的单模式兰姆波激发频率的选择[J].物理学报,2011,11(60):1-9Zhang Haiyan,Cao Yaping,Yu Jianbo,et al.Actuating frequency selection of single mode Lamb waves using single piezoelectric transducer[J].Acta Physics Sinica,2011,11(60):1-9
16姜跃栋,张伦伟,杨国际.基于Lamb波的金属薄板载荷定位方法[J].无损检测,2016,38(4):26-30Jiang Yuedong,Zhang Lunwei,Yang Guoji.Load localization method for a metallic plate based on Lamb wave[J].Nondestructive Testing,2016,38(4):26-30
2 Yang S,Yuan F G.Transient wave propagation of isotropic plates using a higher-order plate theory[J].International Journal of Solids and Structures,2005,42(14):4115-4153
3 Derveaux G,Papanicolaou G,Tsogka C.Time reversal imaging for sensor networks with optimal compensation in time[J].Journal of Acoustical Society of America,2007,121(4):2071-2085
4王强,袁慎芳.主动Lamb波损伤成像监测中的波包重建方法[J].宇航学报,2009,30(3):1207-1211Wang Qiang,Yuan Shengfang.Wave rebuilding method for the active Lamb wave based structural damage imaging[J].Journal of Astronautics,2009,30(3):1207-1211
5 Derveaux G,Papanicolaou G,Tsoga C.Time reversal imaging for sensor networks with optimal compensation in time[J].Journal of Acoustical Society of America,2007,121(4):2071-2085
6 Malyarenko E V,Hinders M K.Fan beam and double crosshole lamb wave tomography for mapping flaws in aging aircraft structures[J].Journal of Acoustic Society of American,2000,108(4):1631-1639
7 Yu L Y,Giurgiutu V.In-situ optimized PWAS phased arrays for Lamb wave structural health monitoring[J].Journal of Mechanics of Materials and Structures,2007,2(3):459-488
8 Giurgiutu V,Bao J.Embedded-ultrasonic structural radar for in situ structural health monitoring for thin-wall structures[J].Structural Health Monitoring,2004,3(2):121-140
9马丁,石立华,付尚琛,等.基于时频分析的Lamb波散射源定位方法研究[J].压电与声光,2013,35(4):483-486Ma Ding,Shi Lihua,Fu Shangchen,et al.Research on the localization method of lamb wave scattering source based on time-frequency analysis[J].Piezoelectric&Acoustooptics,2013,35(4):483-486
10孙凯,孟光,李富才,等.基于弹性导波的厚钢梁结构的损伤检测[J].振动与冲击,2009,28(12):110-114Song Kai,Meng Guang,Li Fucai,et al.Damage detection in thick steel beam based on elastic guided wave[J].Journal of Vernation and Shock,2009,28(12):110-114
11 Yuan S F,Xu Y D,Peng G.New developments in structural health monitoring based on diagnostic Lamb wave[J].Journal of Materials Science&Technology,2004,20(5):490-496
12邱雷,袁慎芳,张逍越,等.基于Shannon复数小波的复合材料结构时间反转聚焦多损伤成像方法[J].复合材料学报,2010,27(2):101-107Qiu Lei,Yuan Shenfang,Zhang Xiaoyue,et al.Shannon complex wavelet and time reversal focusing based multi-damage imaging method on composites structures[J].Acta Material Composiate Sinica,2010,27(2):101-107
13彭鸽.基于Lamb波的结构健康主动监测技术研究[D].南京:南京航空航天大学,2006Peng Ge.Research on active structural health monitoring based on Lamb wave[D].Nanjing:Nanjing University of Aeronautics and Astronatics,2006
14唐军君,卢文秀,李峥,等.碳纤维增强复合材料层合板Lamb波衰减特性研究[J].振动与冲击,2016,35(6):75-79Tang Junjun,Lu Wenxiu,Li Zheng,et al.Attenuation characteristics of Lamb wave in carbon fiber reinforced composite laminated plate[J].Journal of Vernation and Shock,2016,35(6):75-79
15张海燕,曹亚萍,于建波,等.采用单个压电传感器的单模式兰姆波激发频率的选择[J].物理学报,2011,11(60):1-9Zhang Haiyan,Cao Yaping,Yu Jianbo,et al.Actuating frequency selection of single mode Lamb waves using single piezoelectric transducer[J].Acta Physics Sinica,2011,11(60):1-9
16姜跃栋,张伦伟,杨国际.基于Lamb波的金属薄板载荷定位方法[J].无损检测,2016,38(4):26-30Jiang Yuedong,Zhang Lunwei,Yang Guoji.Load localization method for a metallic plate based on Lamb wave[J].Nondestructive Testing,2016,38(4):26-30