莫尔条纹测量金属线膨胀系数

Measuring Thermal Expansion of Metal by Using Moire Fringe

依据莫尔条纹移动距离与光栅移动距离之间的单调函数关系,利用自制简单的摩尔条纹实验装置,通过测量条纹的移动数目来测量光栅微小移动距离,测量了金属铝的热膨胀系数,并与标准值进行对照,相对误差为0.86%。

Based on the linear relation between the displace change and the Moire fringe change number,one can measure the small displace of the body by measuring the Moire fringe change number.We measure the thermal expansion coefficient of aluminum strip by utilizing a simple experimental device for Moire fringes.