大学物理 ›› 2006, Vol. 25 ›› Issue (7): 50-50.

• 著者文摘 • 上一篇    下一篇

热波法测良导体热导率实验中高频热波影响的分析与消除

杨帆 吕庶白 于瑶 王思慧 江洪建 周惠君   

  1. 南京大学物理系,江苏南京210093
  • 出版日期:2006-07-25 发布日期:2006-07-20

Analysis and removal the high frequency effects in the measurements of thermal conductance using the TW technique

  • Online:2006-07-25 Published:2006-07-20

摘要: 在热波法测良导体热导率的实验中,由于高频热波的影响,使实验结果产生很大的误差.现提出一种可有效解决高频热波造成误差的方法,即利用计算机数字滤波滤去高频波,提取基波,从而提高了实验精度.

关键词: 热波法, 高频热波, 数字滤波, 傅里叶分析

Abstract: Abstract: In the measurements of thermal conductance using the thermal wave (TW) technique, there exists a major experimental error caused by the higher frequency wave. An effective method is presented to improve the accuracy by using digital filter to obtain the fundamental frequency.

Key words: thermal wave technique, high frequency thermal wave, digital filter, DFT

中图分类号: 

  • O551.3