利用光热光偏转技术测量固体热扩散率的新方法  

Study on the new method of measuring thermal diffusivity for solid materials by photothermal deflection technique

作　　者：曾胜财[1] 方健文[1] 王志海[1] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2009年第2期169-173,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省自然科学基金资助项目(Y104574);浙江省新苗人才计划项目(2007R40G2030176)

摘　　要：基于光热光偏转技术的基本原理,通过分析光热光偏转的时变信号,利用偏转信号的动态变化来测量固体的热扩散率,并对热扩散率相差较大的一系列材料的热学参数进行了实验研究.结果表明,该方法与传统的光热光偏转技术测量材料热扩散率方法相比,具有实验装置简单、测量方便快捷等优点.Based on the principle of the photothermal measuring the thermal diffusivity of solids by analyzing deflection technique, a new method was proposed for real-time signals of the photothermal deflection. Several materials that spaned a wide range of thermal diffusivity were studied. It was showed that, compared with the traditional photothermal deflection technique, this method had many advantages such as the experiment equipment was simpler, the measurement was more convenient and faster.

关 键 词：光热光偏转 时变信号 固体材料 热扩散率 

分 类 号：O435[机械工程—光学工程]