Improvement on Thermal Diffusivity Measurement Repeatability of Laser Flash Method

摘要：

Electromagnetic interference (EMI) disturbs significantly thermal diffusivity measurements by laser flash method. This paper presented a progress in suppressing EMI by developing a new amplifier, programming a new software of digital filters, promoting the stability of furnace and applying a high performance data acquisition card. A armco iron sample whose thickness is 2.88mm was measured once again, the repeatability was observed to be improved from the previous 1%～3% into the present less than 8‰.

关键词： Metrology Laser flash method EMI Repeatability Labview

作者: LIU Jian-qing SUN Jian-ping ZHANG Jin-tao CHENG Yue-fei

作者单位: HeBei University, Baoding, Hebei 071002, China National Institute of Metrology, Beijing 100013, China Beijing University of Science and Technology, Beijing 100083, China

会议类型: 国际会议

会议名称: 2008年国际温度与热物性测量会议(TEMP BEIJING 2008)

会议地点: 北京

会议语种:英文

页码: 280-282

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）