Parameter estimation in dynamic plane source method

被引：37

作者：

Malinaric, S ^{[1
]}

机构：

[1] Constantine Philosopher Univ, Dept Phys, SK-94974 Nitra, Slovakia

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2004年 / 15卷 / 05期

关键词：

transient method; thermal diffusivity; thermal conductivity; sensitivity coefficient; difference analysis;

D O I：

10.1088/0957-0233/15/5/005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper reports on the measurement of thermophysical properties (thermal conductivity and diffusivity) of PMMA (polymethylmethacrylate). The theory of the dynamic plane heat source method and the experimental apparatus are discussed. Both the sensitivity coefficients and difference analysis are used for searching the time interval in which the measured data can be evaluated. Besides, the influence of the heater and heat losses from the lateral sides of the sample and also the influence of the noise are studied. The estimated measurement uncertainties are 3.6% for thermal conductivity and 2.7% for thermal diffusivity.

引用

页码：807 / 813

页数：7

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