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http://dx.doi.org/10.5050/KSNVE.2010.20.5.460

Simulating a Time Reversal Process for A0 Lamb Wave Mode on a Rectangular Plate Using a Virtual Sensor Array Model  

Park, Hyun-Woo (동아대학교 토목공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.20, no.5, 2010 , pp. 460-469 More about this Journal
Abstract
This paper presents the analysis of a time reversal process for $A_0$ Lamb wave mode($A_0$ mode) on a rectangular plate. The dispersion characteristic equation of the $A_0$ mode is approximated using the Timoshenko beam theory. A virtual sensor array model is developed to consider the effects of reflections occurring on the plate boundary on the time reversal process. The time reversal process is formulated in the frequency domain using the virtual sensor array model. The reconstructed signal is obtained in the time domain through an inverse fast Fourier transform. The validity of the proposed method is demonstrated through the comparison to the numerical simulation results computed by the finite element analysis.
Keywords
Time Reversal Process; Lamb Wave; Rectangular Plate; $A_0$ Mode; Timoshenko Beam Theory; Virtual Sensor Array Model; Dispersion; Piezoelectric Transducers;
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Times Cited By KSCI : 1  (Citation Analysis)
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