The use of a device based on the Peltier effect can provide heat source and sink suitable for diffusivity measurements. By performing a one-side test it is possible to estimate the diffusivity value, provided that some conditions are met. In a previous work the basic idea and the experimental set up of this method were described. A crucial point is the inversion formula that allows recovering the diffusivity value from the temperature data. The proposed analytical formula works only if the experimental parameters are suitably chosen for the particular sample under test. This paper is focused on the conditions to be met in order to correctly apply that formula. To this end, tests have been performed on a material with known thermal properties.
Thermal diffusivity measurement of stainless steel by periodic heating technique / S., Marinetti; P. G., Bison; E., Grinzato; Muscio, Alberto. - STAMPA. - (1999), pp. 316-321. (Intervento presentato al convegno 5th AITA - International Workshop on Advanced Infrared Technology and Applications tenutosi a Venezia, Italia nel 29-30 settembre 1999).
Thermal diffusivity measurement of stainless steel by periodic heating technique
MUSCIO, Alberto
1999
Abstract
The use of a device based on the Peltier effect can provide heat source and sink suitable for diffusivity measurements. By performing a one-side test it is possible to estimate the diffusivity value, provided that some conditions are met. In a previous work the basic idea and the experimental set up of this method were described. A crucial point is the inversion formula that allows recovering the diffusivity value from the temperature data. The proposed analytical formula works only if the experimental parameters are suitably chosen for the particular sample under test. This paper is focused on the conditions to be met in order to correctly apply that formula. To this end, tests have been performed on a material with known thermal properties.
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