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Communication Dans Un Congrès Année : 2024

impact of resynchronization errors on the quality localization of defects in reverberant plates

Résumé

In the context of structural health monitoring (SHM), recent research has been carried out to take advantage of the correlation of ambient noise to locate and characterize defects in reverberant plates. The back-propagation-based imaging algorithms developed in this way require that the signals recorded by the sensors of the control network be perfectly synchronized. This implies that these sensors must be linked to a common clock to ensure their synchronization, which generates significant complexity of the monitoring system in the case of embedded applications. Post-processing resynchronization is a promising solution to deal with this problem. However, in less favorable cases and especially in the presence of additive noise this resynchronization could be made with some errors. In this work, we are interested in quantifying statistically the degradation of the contrast of localization images as a function of the resynchronization error. The obtained results are promising and can be of great interest for embedded applications.
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Dates et versions

hal-04442338 , version 1 (06-02-2024)

Identifiants

  • HAL Id : hal-04442338 , version 1

Citer

Omar Bouchakour, Lynda Chehami, Emmanuel Moulin. impact of resynchronization errors on the quality localization of defects in reverberant plates. Anglo-French Physical Acoustics Conference 2024 (AFPAC), Institute of Physics (IOP), Jan 2024, Luss, United Kingdom. ⟨hal-04442338⟩
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