Selective excitation of high-order shear horizontal wave (SH1) by using a piezoelectric interdigital transducer

2022 ◽  
Vol 165 ◽  
pp. 108390
Author(s):  
Hao Qiu ◽  
Mingtong Chen ◽  
Faxin Li
Keyword(s):  
Selective Excitation ◽  
High Order ◽  
Shear Horizontal Wave ◽  
Horizontal Wave ◽  
Interdigital Transducer ◽  
Shear Horizontal

Analytical Solution for Shear Horizontal Wave Propagation in Piezoelectric Coupled Media by Interdigital Transducer

2004 ◽  
Vol 72 (3) ◽  
pp. 341-350 ◽  
Author(s):  
Q. Wang ◽  
S. T. Quek ◽  
V. K. Varadan
Keyword(s):  
Wave Propagation ◽  
Analytical Solution ◽  
Theoretical Research ◽  
Piezoelectric Medium ◽  
Infinite Length ◽  
Shear Horizontal Wave ◽  
Piezoelectric Effects ◽  
Horizontal Wave ◽  
Interdigital Transducer ◽  
Shear Horizontal

An analytical solution for the shear horizontal wave propagation excited by interdigital transducer in a piezoelectric coupled semi-infinite medium is developed. This solution is an extension of earlier work on wave propagation in a piezoelectric coupled plate with finitely long interdigital transducer by fully taking account of piezoelectric effects in analysis. In the current analysis, the mathematical model for a semi-infinite metal substrate bonded by a layer of interdigital transducer with infinite length is first derived. The theoretical solutions are obtained in terms of elliptic integration of the first kind and of the standard integral representation for Legendre polynomial. The essential hypothesis for the derivation of the analysis is investigated. Based on the solution for infinitely long interdigital transducer, an analytical solution for the wave propagation in this semi-infinite piezoelectric medium excited by a finitely long interdigital transducer is obtained through Fourier transform. This theoretical research can be applied to health monitoring of structures by interdigital transducer. It could also be used as a framework for the design of interdigital transducer in wave excitation of smart structures.

scholarly journals Point-Focusing of Shear-Horizontal Wave Using Fan-Shaped Periodic Permanent Magnet Focusing Coils EMAT for Plate Inspection

2019 ◽  
Vol 19 (12) ◽  
pp. 4393-4404 ◽  
Author(s):  
Hongyu Sun ◽  
Shen Wang ◽  
Songling Huang ◽  
Qing Wang ◽  
Wei Zhao
Keyword(s):  
Permanent Magnet ◽  
Shear Horizontal Wave ◽  
Horizontal Wave ◽  
Shear Horizontal
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