Bayesian Inference for 3D Volumetric Heat Sources Reconstruction from Surfacic IR Imaging
Article dans une revue avec comité de lecture
The domain of non-destructive testing (NDT) or thermal characterization is currently often done by using contactless methods based on the use of an IR camera to monitor the transient temperature response of a system or sample warmed by using any heat source. Though many techniques use optical excitation (flash lamps, lasers, etc.), some techniques use volumetric sources such as acoustic or induction waves. In this paper, we propose a new inverse processing method, which allows for the estimation of 3D fields of heat sources from surface temperature measurements. This method should be associated with volumetric heat source generation. To validate the method, a volumetric source was generated by the Joule effect in a homogeneous PVC sample using an electrical thin cylindrical wire molded in the material. The inverse processing allows us to retrieve the depth of the wire and its geometrical shape and size. This tool could be a new procedure for retrieving 3D defects on NDT.
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Three-Dimensional Reconstruction of Thermal Volumetric Sources from Surface Temperature Fields Measured by Infrared Thermography Article dans une revue avec comité de lecturePRADERE, Christophe; GROZ, Marie-Marthe; ABISSET-CHAVANNE, Emmanuelle; MEZIANE, Anissa; SOMMIER, Alain (MDPI, 2019)Non-destructive testing (NDT) of materials and structures is a very important industrial issue in the fields of transport, aeronautics and space as well as in the medical domain. Active infrared thermography is an NDT ...
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Active thermo-reflectometry for absolute temperature measurement by infrared thermography on specular materials Article dans une revue avec comité de lectureLAFARGUE-TALLET, Thomas; VAUCELLE, Romain; CALIOT, Cyril; AOUALI, Abderezak; ABISSET CHAVANNE, Emmanuelle; SOMMIER, Alain; PEIFFER, Raymond; PRADERE, Christophe (Springer Science and Business Media LLC, 2022-05-12)AbstractKnowledge of material emissivity maps and their true temperatures is of great interest for contactless process monitoring and control with infrared cameras when strong heat transfer and temperature change are ...