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

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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Dates and versions

hal-03596511 , version 1 (03-03-2022)

Identifiers

  • HAL Id : hal-03596511 , version 1

Cite

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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