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| Analytical Modeling of Lamb Waves based on Transfer Function Method |
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Abstract This paper studies the analytical modeling of Lamb wave propagation excited by wafer type piezoelectric sensors (PZT). The PZT excitation is modeled by the distributed point sources at the PZT edge. By using the Fourier transform, the three dimensional wave equation is solved in frequency-wavenumber domain. For the unit harmonic excitation, the frequency response of the Lamb wave propagation is achieved. For any type of excitation, the Lamb wave response is obtained with the help of transfer function method. Using inverse Fourier transform, the time-space wavefield is obtained from the frequency response. In order to verify the analytical modeling, the analytical results are compared with experimental measurements. The comparisons show the analytical results are in a good accordance with the experimental measurements.
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Received: 21 June 2013
Published: 28 June 2014
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2014, Vol. 35 
