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dc.contributor.authorPRADERE, Christophe
IDREF: 095038132
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorGROZ, Marie-Marthe
IDREF: 228324599
dc.contributor.authorABISSET, Emmanuelle
dc.contributor.authorMEZIANE, Anissa
IDREF: 121291421
dc.contributor.authorSOMMIER, Alain
dc.date.accessioned2021-05-14T09:32:06Z
dc.date.available2021-05-14T09:32:06Z
dc.date.conference2020-04-27
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/75942
dc.description.abstractEnNon-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 method that consists in providing an external excitation to cause an elevation of the temperature field in the material, consequently allowing evaluation of the resulting temperature field at the surface. However, thermal exciters that are used (flash lamps, halogen, lasers) act only on the surface of the sample. On the other hand, several energy conversion systems can lead to the generation of volumetric sources; the phenomena of thermo-acoustics, thermo-induction, thermomechanics or thermochemistry can be cited. For instance, ultrasonic waves can generate volumetric heat sources if the material is viscoelastic or if there is a defect. The reconstruction of these sources is the initial process for the quantification of parameters responsible for the heating. Characterizing a heat source means reconstructing its geometry and the supplied power. Identification of volumetric heat sources from surface temperature fields is a mathematically ill-posed problem. The main cause of the issue is the diffusive nature of the temperature. In this work, 3D reconstruction of the volumetric heat sources from the resulting surface temperature field, measured by infrared thermography, is studied. An analysis of the physical problem enables specifying the limits of the reconstruction. In particular, a criterion on the achievable spatial resolution is defined, and a reconstruction limitation for in-depth sources is highlighted.
dc.language.isoen
dc.publisherSPIE
dc.source.titleThermosense SPIE
dc.subject.en3D reconstruction
dc.subject.eninverse problem
dc.subject.entomography
dc.subject.eninfrared thermography
dc.subject.ennon-destructive testing
dc.title.en3D reconstruction of thermal volumetric sources from surface temperature fields measured by infrared thermography
dc.typeCommunication dans un congrès avec actes
dc.identifier.doi10.1117/12.2557734
dc.subject.halSciences de l'ingénieur [physics]
bordeaux.page22
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.countryFR
bordeaux.title.proceedingThermosense: Thermal Infrared Applications XLII
bordeaux.conference.cityOnline Only
bordeaux.peerReviewedoui
hal.identifierhal-02998124
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02998124v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Thermosense%20SPIE&rft.spage=22&rft.epage=22&rft.au=PRADERE,%20Christophe&GROZ,%20Marie-Marthe&ABISSET,%20Emmanuelle&MEZIANE,%20Anissa&SOMMIER,%20Alain&rft.genre=proceeding


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