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Journal Articles Physics Procedia Year : 2015

Feasibility of passive tomography of extended defects using ambient elastic noise correlation

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Abstract

Using guided waves in structural health monitoring seems interesting because of their capability to propagate over long distances. This paper shows that tomography algorithms using guided waves in plate-like structures and cross-correlation of ambient noise can be combined to process the passive tomography of a structure. This can make a very robust and low power SHM system. An active tomography image has been performed with a time-of-flight tomography algorithm using experimental data produced by piezoelectric transducers. Comparison between active signals and passive signals which come from cross-correlation of ambient noise produced by compressed air sprayed on an aluminum plate shows that it is possible to detect time-of-flight passively.
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Licence : CC BY NC ND - Attribution - NonCommercial - NoDerivatives

Dates and versions

cea-01827679 , version 1 (25-08-2022)

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Attribution - NonCommercial - NoDerivatives - CC BY 4.0

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Tom Druet, B. Chapuis, Emmanuel Moulin. Feasibility of passive tomography of extended defects using ambient elastic noise correlation. Physics Procedia, 2015, 70, pp.640-643. ⟨10.1016/j.phpro.2015.08.064⟩. ⟨cea-01827679⟩
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