Influence de l'erreur de mesure de température de surface par thermocouples de contact sur la détermination de la diffusivité thermique par méthode ``flash''
Abstract
A model of surface temperature measurement using a thermocouple is presented. The solution of the model is found by separation of variables and by the “quadripoles” method. This last method allows both a neat representation of the results and a simple extrapolation. Application of this model leads to the determining of the temperature detector's influence on the estimation of heat diffusivity of the heat pulse (“flash”) method. Examples are given for a semi-conducting thermocouple and for a metallic thermocouple.
- Publication:
-
Journal de Physique III
- Pub Date:
- November 1992
- DOI:
- 10.1051/jp3:1992244
- Bibcode:
- 1992JPhy3...2.2247L