论文部分内容阅读
本文简略回顾了激光法测定材料热常数的发展历程。着重指出作为热常数之一的比热测定是该项技术中的一个薄弱环节。作者对国内外传统的比热测试技术进行了归纳分析,指出了其特点和存在的问题。为有效克服这些问题,作者提出了复合黑体取代法,并对其基本原理进行了分析,导出了比热计算公式,并通过实验证实了该方法的有效性和正确性。
This article briefly reviews the development of the laser method for the determination of material thermal constants. It is emphasized that the determination of specific heat as one of the thermal constants is a weak link in this technique. The author summarizes the traditional specific heat test technology at home and abroad, and points out its characteristics and existing problems. In order to effectively overcome these problems, the author puts forward a composite blackbody substitution method and analyzes its basic principle. The formula of specific heat is deduced. The validity and correctness of the method are verified through experiments.