| 周期热流法测量薄膜材料热扩散率的二维效应分析 |
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| 引用本文： | 顾毓沁,廖峰. 周期热流法测量薄膜材料热扩散率的二维效应分析[J]. 工程热物理学报, 1997, 0(5) |
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| 作者姓名： | 顾毓沁 廖峰 |
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| 作者单位： | 清华大学工程力学系!北京100084 |
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| 摘 要： | 符号表A无量纲温度幅值L。热扩散长度。1二维效应作用区边界AD温度幅值。试样表面法向Yd样品无量纲厚度AO特征温度q热源热流。材料热扩散率C材料体积比热容qb热源热流幅值。”测量热扩散率d样品厚度T试样上某点温度A材料导热系数h表面等效换热系数几边界温度p温度相位He无量纲换热系数。。光源边界。测量角频率1前言使用周期热流法测量薄膜材料面向热扩散率的基本原理如图1所示，调制光对试样加热，遮光板沿V方向以一定速度V移动，引起试样上热源边界l变化，假设没有热损失，试样上经历沿。方向的一维导热过程，则热电偶测得之温度幅…
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| 关 键 词： | 周期热流法 二维效应 |
ANALYSIS OF TWO DIMENSIONAL EFFECT IN MEASUREMENTS OF THERMAL DIFFUSIVITY OF THIN MATERIALS WITH A PERIODIC HEAT-FLOW METHOD |
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| GU Yuqin LIAO Feng. ANALYSIS OF TWO DIMENSIONAL EFFECT IN MEASUREMENTS OF THERMAL DIFFUSIVITY OF THIN MATERIALS WITH A PERIODIC HEAT-FLOW METHOD[J]. Journal of Engineering Thermophysics, 1997, 0(5) |
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| Authors: | GU Yuqin LIAO Feng |
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| Abstract: | Periodic heat-flow method for measuring the thermal diffusivity of thin materials has been applied widely. An analysis of two-dimensional effect in this method is provided and the area of experimental parameters to be able to neglect the two-dimensional effect is presented. |
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| Keywords: | periodic heat-flow method two-dimensional effect |
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