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Thesis
Home   /   Post Doctorat   /   Development of a fiber Bragg grating-based instrumentation for ultrasonic acoustic measurement in civil engineering structures

Development of a fiber Bragg grating-based instrumentation for ultrasonic acoustic measurement in civil engineering structures

Abstract

Within the framework of an ANR project called FO-US for "Fiber Optics embedded in cementitious materials for UltraSonic active and passive imaging and monitoring", and in partnership with the Gustave Eiffel University, EDF and ANDRA, CEA List is proposing a post-doctoral work aimed at developing an instrumentation for the measurement of volume elastic waves propagating within materials dedicated to civil engineering using acoustic receivers with multiplexed Bragg gratings on optical fiber. In particular, the challenge of simultaneous measurement of ultrasonic signals via a single optical fibre along with several dozen of fiber Bragg gratings written by laser is to be addressed. These fiber Bragg gratings are intended to be embedded in concrete or clay structures. Two major applications are addressed in the FO-US project and will give rise to on-site tests: fiber Bragg grating instrumentation of "concrete/steel/concrete" pipes used in nuclear installations with EDF and instrumentation of boreholes in the Bures nuclear waste storage site with ANDRA.

Laboratory

Département Métrologie Instrumentation et Information (LIST)
Service Capteurs et Instrumentation
Laboratoire Capteurs Fibres Optiques
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