Please use this identifier to cite or link to this item: https://doi.org/10.1098/rspa.2002.1071
Title: Analytical solution of excitation of Lamb waves in plates by inter-digital transducers
Authors: Jin, J.
Quek, S.T. 
Wang, Q. 
Keywords: Analytical solution
Electro-mechanical effect
Inter-digital transducer
Lamb wave
Issue Date: 8-May-2003
Source: Jin, J., Quek, S.T., Wang, Q. (2003-05-08). Analytical solution of excitation of Lamb waves in plates by inter-digital transducers. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 459 (2033) : 1117-1134. ScholarBank@NUS Repository. https://doi.org/10.1098/rspa.2002.1071
Abstract: An analytical method is presented to model the excitation and propagation of Lamb waves by inter-digital transducers (IDTs). The acoustic field underneath the IDT (i.e. near field) excited by the IDT was obtained by modelling both the electro-mechanical coupling effect and the interaction between the IDT and the host plate. The amplitudes of the Lamb waves propagating in the far field were computed through a mode-expansion method based on the acoustic solution of the near field excited by the IDT. Experiments were carried out to excite Lamb waves in an aluminium plate. The ratio of amplitudes from experimental results agrees with that from the analytical solution. This analytical method may provide guidance on design of IDTs.
Source Title: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
URI: http://scholarbank.nus.edu.sg/handle/10635/65154
ISSN: 13645021
DOI: 10.1098/rspa.2002.1071
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