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Poster communications

Baseline-free repetitive pump-probe experiment for structural health monitoring

Marina Terzi 1, 2 Lynda Chehami 1, 2 Emmanuel Moulin 1, 2 Nikolay Smagin 1, 2 Vladislav Aleshin 1 
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 : Baseline-free damage localization methods in structural health monitoring are of interest. We conducted a pump-probe experiment on metal plate. PZT patch generates a probe wave at 20 kHz, a continuous pump of 1 Hz is produced by a shaker. The aim was localization of a steel ball pressed against metal plate. We received reverberated signals with PZT patches. These reverberations are affected by a current coordinate of the ball i.e. by a local change in geometry. We subtract signals recorded at different times (corresponding to different loading states) and apply the backpropagation algorithm that locates the origin of the modulation.
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Poster communications
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https://hal-uphf.archives-ouvertes.fr/hal-03596511
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Submitted on : Thursday, March 3, 2022 - 4:39:42 PM
Last modification on : Wednesday, March 23, 2022 - 3:51:34 PM

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  • HAL Id : hal-03596511, version 1

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Marina Terzi, Lynda Chehami, Emmanuel Moulin, Nikolay Smagin, Vladislav Aleshin. Baseline-free repetitive pump-probe experiment for structural health monitoring. 10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. ⟨hal-03596511⟩

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