A new filtering approach dedicated to heat sources computation from thermal field measurements

Thomas Pottier (1) , Hervé Louche (2) , Serge Samper (3) , Hugues Favreliere (3) , Franck Toussaint (3) , Pierre Vacher (3)

1 LAMPA - Laboratoire Angevin de Mécanique, Procédés et InnovAtion
2 ThM2 - ThermoMécanique des Matériaux
3 SYMME - Laboratoire SYstèmes et Matériaux pour la MEcatronique

This paper presents a new approach in heat source evaluation from thermal field measurements. A modal projection based on dynamics (Discrete Modal Decomposition) is used to estimate the spatial term of a heat diffusion problem. A numerical example is presented in order to validate this approach and compare it to a more classical spectral decompostion (based on strictly thermal considerations). Results show that the proposed projection basis not only provides closer assessement of the heat sources but is also more stable to measurement noise and side effects.

Domains: Mechanics of materials [physics.class-ph]; Mechanics of materials [physics.class-ph]

Thomas Pottier, Hervé Louche, Serge Samper, Hugues Favreliere, Franck Toussaint, et al.. A new filtering approach dedicated to heat sources computation from thermal field measurements. PhotoMechanics Conference, May 2013, Montpellier, France. pp.175-178. ⟨hal-00938117⟩