热发射率
材料科学
光学
热的
激光器
温度测量
梁(结构)
图像分辨率
度量(数据仓库)
物理
热阻
计算机科学
热接触电导
量子力学
数据库
气象学
作者
Kimihito Hatori,Naoyuki Taketoshi,Tetsuya Baba,Hiromichi Ohta
摘要
We have developed an apparatus to measure thermal effusivity distribution in solid materials with a high spatial resolution better than 10μm by the thermoreflectance technique and the periodic heating method. A metal film sputtered on the surface of a sample is periodically heated by a modulated laser beam. The temperature response is measured by using another thin laser beam as a thermoreflectance signal. The thermal effusivity of the sample is derived from the phase lag of the temperature response from the periodic heating. Measurements of a functionally graded material and a fiber composite material are presented as application examples of this thermal effusivity distribution measurement technique.
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