| 利用周期热流法测定金属材料热物性参数 |
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| 引用本文： | 周孑民,王长宏,薛正华,杨莺,曾文辉.利用周期热流法测定金属材料热物性参数[J].武汉理工大学学报,2005,27(10):43-46. |
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| 作者姓名： | 周孑民 王长宏 薛正华 杨莺 曾文辉 |
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| 作者单位： | 中南大学能源与动力工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金(50376076)，教育部博士点基金(20010533009) |
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| 摘 要： | 对一种经典的导热系数测试法——周期热流法进行了改进。结合相关文献，对其测试理论进行了深入分析，并对2种传统的分析解法进行了修正。利用精密的电子仪器及先进的数据采集设备，设计开发了一套金属及合金导热系数测定装置，解决了采用该法测试时难以得到较为理想的正弦或余弦温度波这一难题，减少了测试误差。通过对几种金属及合金的测定，与经典实验数据比较，发现最大误差不超过4％，测试精度较高。
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| 关 键 词： | 周期热流法 导热系数 导温系数 |
| 文章编号： | 1671-4431(2005)10-0043-04 |
| 修稿时间： | 2005年5月17日 |
Determination of Thermal Properties of Metals by Using of Periodic Heat Flow Method |
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| ZHOU Jie-min,WANG Chang-hong,XUE Zheng-hua,YANG Ying,ZENG Wen-hui.Determination of Thermal Properties of Metals by Using of Periodic Heat Flow Method[J].Journal of Wuhan University of Technology,2005,27(10):43-46. |
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| Authors: | ZHOU Jie-min WANG Chang-hong XUE Zheng-hua YANG Ying ZENG Wen-hui |
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| Abstract: | A classical thermal conductivity measurement method,which was called as periodic heat flow method,was studied in this paper.Two traditional analytical solutions were modified.A measuring system was developed by employing modern electrical facilities and data acquisition apparatus.Standard sine waves of the temperature were obtained in experiments and the errors were decreased.Thermal conductivities of several metal and alloy samples were determined which showed that the relative errors were less than 4%. |
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| Keywords: | periodic heat flow method thermal conductivity thermal diffusivity |
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