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Réflectométrie fréquentielle (FDR) appliquée à l'évaluation non destructive des conduits de précontrainte extérieure, perspective pour la mesure de la teneur en eau du béton

Abstract : This paper presents an electromagnetic method of diagnosis based on frequency domain reflectometry (FDR) associated with an inversion algorithm developed by INRIA, ISTLTM (Inverse Scattering for Transmission Lines). ISTLTM allows estimating the spatial profile of the electrical impedance of the line from the FDR measurements. Experimental results on two mockups of external post-tensioned ducts with filling defects show the feasibility of the method. We will try to show the similarities between auscultation external post-tensioned ducts and measurement of water content by TDR probes (Time Domain Reflectometry).
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https://hal.inria.fr/hal-00974243
Contributor : Michel Sorine <>
Submitted on : Saturday, April 5, 2014 - 5:59:37 PM
Last modification on : Tuesday, April 20, 2021 - 4:54:04 PM
Long-term archiving on: : Saturday, July 5, 2014 - 10:46:35 AM

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  • HAL Id : hal-00974243, version 1

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Filippo Visco-Comandini, Thierry Bore, Gonzague Six, Florence Sagnard, Sylvie Delepine-Lesoille, et al.. Réflectométrie fréquentielle (FDR) appliquée à l'évaluation non destructive des conduits de précontrainte extérieure, perspective pour la mesure de la teneur en eau du béton. Congrès Diagnobéton 2014, INSA-UPS, Toulouse, Mar 2014, Toulouse, France. ⟨hal-00974243⟩

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