Infrared thermotransmittance-based temperature field measurements in semitransparent media - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Review of Scientific Instruments Année : 2023

Infrared thermotransmittance-based temperature field measurements in semitransparent media

Résumé

Contactless temperature field measurements in or at the surfaces of semitransparent media are a scientific challenge as classical thermography techniques based on proper material emission cannot be used. In this work, an alternative method using infrared thermotransmittance for contactless temperature imaging is proposed. To overcome the weakness of the measured signal, a lock-in acquisition chain is developed and an imaging demodulation technique is used to retrieve the phase and amplitude of the thermotransmitted signal. These measurements, combined with an analytical model, enable the estimation of the thermal diffusivity and conductivity of an infrared semitransparent insulator (wafer of Borofloat 33 glass) and the monochromatic thermotransmittance coefficient at 3.3 µm. The obtained temperature fields are in good agreement with the model, and a detection limit of ±2 °C is estimated with this method. The results of this work open new opportunities in the development of advanced thermal metrology for semitransparent media.

Mots clés

Fichier principal
Vignette du fichier
I2M_RSI_Chevalier_2023.pdf (1.62 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04099882 , version 1 (17-05-2023)

Identifiants

Citer

C. Bourgès, Stéphane Chevalier, J. Maire, A. Sommier, C. Pradère, et al.. Infrared thermotransmittance-based temperature field measurements in semitransparent media. Review of Scientific Instruments, 2023, 94 (3), pp.034905. ⟨10.1063/5.0131422⟩. ⟨hal-04099882⟩
6 Consultations
4 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More