Développement d'un système de mesure ultrasonore à base de réseaux de Bragg sur fibre optique : application au contrôle santé intégré par ondes élastiques guidées
Abstract
Optical fiber transducers such as Fiber Bragg Gratings (FBG) are promising solutions for guided waves Structural Health Monitoring (SHM) due to their low intrusivity and their ability to cope with harsh environments (extreme temperatures, radiations, explosive atmospheres…). We present here a solution enabling measurements under varying environmental and operational conditions, which is
mandatory for many applications in SHM, the low complexity of the solution ensuring good integration capacities. The effect of the length of the FBG was also studied to enable the optimization of the system sensitivity.
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