摘要
提出了一种有别于现有各种测定物体导热系数k的方法。其原理是将物体瞬态温度场解析解与测量物体内某处温度值相结合来测算k。文中简述了测算步骤,并提出实验环境、条件安排和测量参数值范围的优化原则与判据。对测算误差及影响因素做了分析,并对测算结果进行了初步实验验证,结果表明,本文测算值与由其它方法所得到的数值相比较,相对偏差为0.8%～4%。
The principle and method for the determination of heat conductivity are proposed by combining the analytical solution and the measurement of transient temperature distribution in the body.The procedure and parameter choice of the experiment are described.The error and influence factors have been analyzed and a preliminary experimental examination is also presented.By comparing with the measurement values obtained from other methods,the range of relative deviation is 0.8% to 4%
出处
《计量学报》
CSCD
1992年第3期195-201,共7页
Acta Metrologica Sinica
