THE BOUNDARY INDUCED ERROR ON THE MEASUREMENT OF THERMAL-CONDUCTIVITY BY TRANSIENT HOT-WIRE METHOD

被引：27
|
作者：
LIANG, XG
机构：
[1] Dept. of Eng. Mech., Tsinghua Univ., Beijing
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 1995年 / 6卷 / 05期
关键词：
D O I：
10.1088/0957-0233/6/5/005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An analysis of the dimension influence on the mesurement accuracy of thermal conductivities by transient hot wire/probe method is made. The radial and axial effects are discussed separately under the supposition of constant boundary temperatures. The results show that the radial and axial lengths of the measured sample, the radius ratio and heat capacity ratio of sample to hot wire/probe, as well as the length to diameter ratio of the hot wire/probe are important parameters in error analysis. Former analysis underestimated the boundary effects. New criteria for error analysis are established.
引用
收藏
页码：467 / 471
页数：5
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