光热辐射方法测量各向异性材料的热导张量

Measurements on thermal conductivity tensor of anisotropic material by PTR method

报道了一种用光热辐射 (PTR)技术测量各向异性材料热导张量的简单方法。本文从各向异性介质的热传导理论出发 ,推导出该材料的幅频和相频关系 ;在实验上用PTR方法测出幅频和相频曲线 ,拟合出热导率 。

A simple method to measure thermal conductivity tensor of anisotropic material by PTR method is introduced.Based on theory of thermal conduction of anisotropic media,we develop the relation between amplitude and frequency,phase and frequency.Thermal conductivity is calculated by fitting the experimental data which is measured by PTR method.The thermal conductivity tensor of anisotropic material is gotten.