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Considering the interaction between the piezoelectric transducer (PZT) and the plate, a frequency adjusting method of generating single mode Lamb waves using single piezoelectric transducer is presented in theory. The application of mode selection in Lamb wave structural health monitoring is experimentally given. The theory has the ability to predict the amplitude of each Lamb wave mode as a function of frequency for given plate material and thickness, and specific PZT size. Optimal actuating frequency can be identified at which the wave amplitude for a particular mode is maximized while the wave amplitudes for other modes are relatively minimized. Numerical results are presented to validate the theory and show the capability of single mode Lamb wave selection. Different frequencies that correspond to a preferential A0 mode, a preferential S0 mode, and both the A0 and the S0 modes are excited for damage imaging, respectively. The results show that the single Lamb wave mode detection can locate the damage more accurately, demonstrating the importance of the mode selection in Lamb wave structural health monitoring.
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Keywords:
- Lamb waves /
- piezoelectric transducer /
- actuating frequency /
- structural health monitoring
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[11] Cai J, Yuan S F, Zhang X Y, Wang Q 2010 J. Nanjing University of Aeronautics & Astronautics 42 62(in Chinese)[蔡 建、袁慎芳、张逍越、王 强 2010 南京航空航天大学学报 42 62]
[12] Park H W 2009 Wave Motion 46 451
[13] Xu B L, Giurgiutiu V 2007 J. Nondestruct Eval. 26 123
[14] Yu L, Santoni-Bottai G, Xu B, Liu W, Giurgiutiu V 2008 Fatigue Fract. Engng. Mater. Struct. 31 611
[15] Santoni G B, Yu L Y, Xu B L, Giurgiutiu V 2007 Transactions of the ASME 129 752
[16] Giurgiutiu V 2005 J. Intell. Mater. Syst. Struct. 16 291
[17] Sirohi J, Chopra I 2000 J. Intelligent Material Systems and Structures 11 246
[18] Wang C H, Rose J T, Chang F K 2004 Smart Mater. Struct. 13 415
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[1] Li F C, Meng G 2008 Acta Phys. Sin. 57 4265 (in Chinese) [李富才、孟 光 2008 57 4265]
[2] Zhang H Y, Liu Z Q, Ma X S 2003 Acta Phys. Sin. 52 2492 (in Chinese) [张海燕、刘镇清、马小松 2003 52 2492]
[3] Xiang Y X, Deng M X 2008 Chin. Phys. B 17 4232
[4] Zhu X F,Liu S C, Xu T, Wang T H, Cheng J C 2010 Chin. Phys. B 19 044301
[5] Zhang H Y, Sun X L, Cao Y P, Chen X H, Yu J B 2010 Acta Phys. Sin. 59 7111 (in Chinese) [张海燕、孙修立、曹亚萍、陈先华、于建波 2010 59 7111 ]
[6] Wang B F, Li Y, Shi Y F 2006 J. Nanjing University of Aeronautics & Astronautics 38 613 (in Chinese)[王帮峰、李 迎、施益峰 2006 南京航空航天大学学报 38 613]
[7] Wilcox P D, Lowe M J S, Cawley P 2001 J. Intell. Mater. Syst. Struct. 12 553
[8] Hayashi T, Kawashima K 2003 JSME International Journal, Series A 46 620
[9] Peng G, Yuan S F 2006 Acta Aeronautica & Astronautica Sinica 27 957 (in Chinese)[彭 鸽、袁慎芳 2010 航空学报 2006 27 957]
[10] Liu T, Veidt M, Kitipornchai S 2002 Composite Structures 58 381
[11] Cai J, Yuan S F, Zhang X Y, Wang Q 2010 J. Nanjing University of Aeronautics & Astronautics 42 62(in Chinese)[蔡 建、袁慎芳、张逍越、王 强 2010 南京航空航天大学学报 42 62]
[12] Park H W 2009 Wave Motion 46 451
[13] Xu B L, Giurgiutiu V 2007 J. Nondestruct Eval. 26 123
[14] Yu L, Santoni-Bottai G, Xu B, Liu W, Giurgiutiu V 2008 Fatigue Fract. Engng. Mater. Struct. 31 611
[15] Santoni G B, Yu L Y, Xu B L, Giurgiutiu V 2007 Transactions of the ASME 129 752
[16] Giurgiutiu V 2005 J. Intell. Mater. Syst. Struct. 16 291
[17] Sirohi J, Chopra I 2000 J. Intelligent Material Systems and Structures 11 246
[18] Wang C H, Rose J T, Chang F K 2004 Smart Mater. Struct. 13 415
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