Abstract
Leaky interface wave generated by pulse excitation is investigated. According to different physical significance of wave solutions, appropriate solutions are selected to calculate propagation of leaky interface wave under pulse excitation. The propagation characteristics of leaky interface wave are explored through attenuation characteristic, dispersion relation and wave structure. To verify the theoretical predications, a Finite Element Method (FEM) simulation is carried out. Attenuation characteristic and wave structure are extracted from simulation results and compared with theoretical results. Additionally, an experimental verification is set up. In this experiment, the existence and excitability of leaky interface wave are verified by measuring the wave velocity and waveform analysis. Through FEM simulation and experiment, some properties of prediction from theoretical derivation are verified. The propagation characteristics of leaky interface wave provide some references for its application in nondestructive testing.
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For a better understanding of the insights drawn in the paper, experimental material parameters and experimental results are in supplementary material. https:// pan.baidu.com/s/1Zp0wi57U3RRsWIzpDWNbIQ.
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Li, Mh., Li, B. Propagation of Leaky Interface Waves at a Solid Boundary under Pulse Excitation. Acoust. Phys. 66, 604–612 (2020). https://doi.org/10.1134/S1063771020060123
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DOI: https://doi.org/10.1134/S1063771020060123