Potentiel de la robotique pour l'inspection thermographique par chauffage inductif

Authors: Mokhtari, Mohammed-Yacine
Advisor: Maldague, Xavier
Abstract: Eddy current thermography (ECT) is an active thermography method. The inductive excitation generates Eddy currents in electrically-conductive specimen. In a presence of defects, the eddy current flow is affected by these discontinuities leading to changes in the temperature distribution in the specimen around the defects. These changes are observed by an infrared camera. In this work, we present a robotic application of the method. A robotic interface is developed and all the sensors needed are integrated to the platform. Simulations are performed using COMSOL Multiphysics by varying different parameters. Experiments are realised on different specimens (made of different materials) with defects of different sizes. The linescan Eddy current thermography is studied and other modes are explored. The resulting images are reconstructed with a dedicated algorithm. Finally, the method’s results are compared to optical thermography to show the capability of the method.
Document Type: Mémoire de maîtrise
Issue Date: 2018
Open Access Date: 21 December 2018
Permalink: http://hdl.handle.net/20.500.11794/33042
Grantor: Université Laval
Collection:Thèses et mémoires

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