Noncontact surface temperature measurement by means of a modulated photothermal effect - Axe Physique des Transferts Accéder directement au contenu
Article Dans Une Revue Applied optics Année : 1990

Noncontact surface temperature measurement by means of a modulated photothermal effect

Résumé

The main problems when measuring surface temperature by means of radiometry (i.e., optical pyrometry) are the unknown emissivity and radiation reflected by the sample. The latter problem becomes critical when the sample is placed in hot surroundings, such as furnaces or combustion chambers; indeed, the reflected flux may then become larger than the emitted flux. In this paper we describe a novel technique, based on the photothermal effect, which allows the surface temperature to be measured without error due to reflected fluxes. The influence of the parameters of the experimental setup are discussed. Experimental data obtained with a sample placed inside a furnace are reported in the (300-1150 K) range. The experimental results show the efficiency of the technique which proves to be a general solution to extend the domain of application of optical pyrometry.
Fichier principal
Vignette du fichier
Loarer1990.pdf (390.14 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01617234 , version 1 (29-08-2022)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Thierry Loarer, Jean-Jacques Greffet, Magdeleine Huetz-Aubert. Noncontact surface temperature measurement by means of a modulated photothermal effect. Applied optics, 1990, 29 (7), pp.979-987. ⟨10.1364/AO.29.000979⟩. ⟨hal-01617234⟩
96 Consultations
30 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More