レーザフラッシュ法による低熱伝導性試料の熱拡散率測定に関する研究 : 受光板による測定条件の最適化と熱損失補正

概要

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In this paper, the modified laser-flash method (LF method) measuring themal diffusivity of low conductivity materials is proposed. What is unique about this method is that the front shielding plate (FSP) is employed. FSP prevents superheating of the irradiated surface and stops the beam from transmitting through when sample is transparent. In order to calculate the thermal diffusivity, the equation describing the rear surface temperature response involving the heat loss effect is derived under assumption that the FSP temperature gradient is negligible because it is so highly conductive. An acrylic resin with copper and aluminum FSP was tested, and the measured thermal diffusivity agreed well with the recommended value in the literature. This modified LF method is useful for measuring high polymer materials such as resin or rubber, especially for the case that their thickness is greater than 2×10^<-3>m.
1995-03-25