利用单缝衍射测金属材料的线膨胀系数

A single slit diffraction approach for measuring metal linear expansion coefficient

根据单缝衍射原理,利用CCD数据采集系统来测量金属体随温度升高的伸长量,给出测量金属线膨胀系数的一种新方法.此方法采用CCD图象处理技术与计算机技术相结合,实现了数据采集、计算处理自动化。有效降低了测量时人为因素的影响,提高了测量的准确度。它为物理量的转换测量提供了一种可行的参考途径。

A new approach for measuring metal linear expansion coefficient is presented where CCD data collecting system is used and the single slit diffraction principle referred to in measuring the elongation extent to which the metal body expanses as the temperature increases. The method proposed in this paper features in the adoption of CCD image processing technique and computer technique and in automation of data collection as well as computation. The measuring accuracy is considerably improved with this new method and thus this new measuring method makes an effective way of measuring metal expansion.