In this paper, a new method of measuring thermal diffusivity and thermal conductivity tensor at room temperature with photothennal signal is presented.
本论文中讨论了一种利用光热技术在室温下测量材料的热扩散率和热导张量的方法。
参考来源 - 不透明材料热扩散率PTR测量方法的研究The thermal diffusivity is determined by fitting the experimental data. Photothermal signals from anisotropic media, which is irradiated by a modulated laser beam, are analyzed in the second part.
从光热辐射理论出发，在一定条件下，推导出位相信号和调制频率的关系表现为线性关系，分析实验数据并拟合出各向同性材料的热扩散系数。
参考来源 - 不透明材料热扩散率PTR测量方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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The thermal diffusivity of steel and graphite is measured.
测量了钢和石墨的热扩散率。
The thermal diffusivity of the specimen is determined by a new nonlinear least-square fitting algorithm.
用一种新的非线性最小二乘拟合算法确定出了试样的导温系数。
Moreover, the sample's thermal diffusivity is measured by MPR radial scanning methods. Experimental results are satisfactory.
同时，我们利用MPR径向扫描法测量了块状样品的热扩散率，得到了较好的实验结果。
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