| 非稳态平面热源法同时测量材料的导热系数和热扩散率 |
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| 引用本文： | 于帆,张欣欣,何小瓦. 非稳态平面热源法同时测量材料的导热系数和热扩散率[J]. 宇航计测技术, 2006, 26(6): 13-17,21 |
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| 作者姓名： | 于帆 张欣欣 何小瓦 |
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| 作者单位： | 1. 北京科技大学机械工程学院热能工程系,100083
2. 航天材料及工艺研究所,北京9200信箱73分箱15号,100076 |
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| 基金项目： | 国防科技重点实验室资助项目(项目编号:2005JS51469.0401.QT02.5) |
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| 摘 要： | 介绍了非稳态平面热源法的测量原理、传热数学模型及温度响应公式,建立了相应的实验装置并进行实际测量。研究结果表明,只需测量试样内某一点的温度变化就可同时得到材料的导热系数和热扩散率以及体积热容等热物性参数。
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| 关 键 词： | 导热性 热扩散系数 热物理性质 ~ 瞬态平面热源法 |
| 文章编号： | 1000-7202(2006)06-0013-05 |
| 修稿时间： | 2006-01-05 |
Measurement of Thermal Conductivity and Thermal Diffusivity for Materials on Transient Hot-Plane Method |
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| YU Fan,ZHANG Xin-xin,HE Xiao-wa. Measurement of Thermal Conductivity and Thermal Diffusivity for Materials on Transient Hot-Plane Method[J]. Journal of Astronautic Metrology and Measurement, 2006, 26(6): 13-17,21 |
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| Authors: | YU Fan ZHANG Xin-xin HE Xiao-wa |
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| Abstract: | The measurement principle of the transient Hotplane method,the heat conduction model and the temperature response equations are introduced.The experimental apparatus has been established and practical measurements have been made with some materials.The results show that the thermal conductivity,the thermal diffusivity and the heat capacity of the materials can be obtained simultaneously just by measuring the temperature response in the specimen with a sensor placed a distance from the heat source. |
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| Keywords: | Thermal conductivity Thermal diffusivity Thermophysical property Transient plane heat source method |
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