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Poster communications

Numerical study of the reflected elastic waves using Rayleigh diffraction integral

Nadir Maghlaoui 1, 2 Hakim Djelouah Assia Oudina Mohamed Ourak 1, 2 Farouk Benmeddour 1, 2 
2 TPIA - IEMN - Transduction, Propagation et Imagerie Acoustique - IEMN
IEMN-DOAE - Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520
Abstract : In this work, the transient ultrasonic waves radiated by a linear phased array transducer in a liquid then reflected at a liquid solid interface is studied. A model based on the Rayleigh integral is used where the reflection at the plane interface is considered by using the reflection coefficients for harmonic plane waves. The transient field is obtained by an inverse Fourier transform of the harmonic field. The obtained results highlight the different components of the ultrasonic field: the direct and edge waves as well as the longitudinal head waves or leaky Rayleigh waves. The temporal representation of these waves has been analyzed and discussed by the rays' model. Instantaneous cartographies allowed a clear description of all the waves which appear at the liquid-solid interface. The results have been compared to those obtained by using a finite element method.
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Poster communications
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Submitted on : Wednesday, March 2, 2022 - 3:22:01 PM
Last modification on : Wednesday, March 23, 2022 - 3:51:34 PM

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  • HAL Id : hal-03594276, version 1

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Nadir Maghlaoui, Hakim Djelouah, Assia Oudina, Mohamed Ourak, Farouk Benmeddour. Numerical study of the reflected elastic waves using Rayleigh diffraction integral. 2nd International Conference on Numerical Modelling in Engineering, NME 2019, Aug 2019, Beijing, China. 657 (1), pp.012014. ⟨hal-03594276⟩

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