Measurement of thermophysical properties of ceramics by the flash method

Brazilian Archives of Biology and Technology

Cláudio S. C. Pinto²  Henrique Massard²  Paulo Couto²  Helcio R. B. Orlande²  Renato M. Cotta²  Maria C. R. Ambrosio¹ 

[1] ,Federal University of Rio de Janeiro Department of Mechanical Engineering POLIRio de Janeiro RJ ,Brasil

关键词: Flash Method;    Thermophysical Property;    Ceramic block;   

DOI  :  10.1590/S1516-89132006000200006

来源: SciELO

【 摘 要 】

The flash method, proposed by Parker, Butler, Jenkins and Abbott from the U.S. Navy Radiological Defense Laboratory in 1961, is the most popular method for measuring the thermal diffusivity of solids. In this method, the front surface of a small sample is subjected to a very short burst of radiant thermal energy. The resulting temperature rise on the opposite surface of the sample is measured and the thermal diffusivity is computed from the temperature rise versus time data. Also, the specific heat can be computed from the measured data, thus allowing for the calculation of the thermal conductivity. Several theoretical models are available for the flash method, which include adiabatic boundary conditions, heat losses, surface coating effects, among other aspects. In this paper, tests were made for the identification of thermo-physical properties of a Ceramic block. The Netzsch Nanoflash LFA 447/1 of LTTC/COPPE/UFRJ was used for the measurements.

【 授权许可】

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