Thermal contact resistance calibration for thermal diffusivity measurement of metals by the thermoelastic method

被引：2
|
作者：
Beghi, MG [1 ]
Luzzi, L [1 ]
机构：
[1] Politecn Milan, INFM, Dept Nucl Engn, I-20133 Milan, Italy
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2000年 / 11卷 / 06期
关键词：
thermal diffusivity; thermal contact resistance; certified reference materials; material testing machine; thermophysical characterization of solids;
D O I：
10.1088/0957-0233/11/6/320
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A thermoelastic method for measuring the thermal diffusivities of elastic solids has recently been presented. The accuracy for the most conductive metals is not satisfactory The cause is traced to thermal contact resistance; a new procedure to calibrate far contact resistance and to take it into account in data analysis is devised. The new measurement procedure is validated by tests performed at room temperature on various metallic reference materials, obtaining precision and accuracy comparable to those of established methods, also for shea specimens and far the higher diffusivity metals.
引用
收藏
页码：766 / 770
页数：5
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