劈尖干涉法测量磁致伸缩系数

摘要

根据劈尖等厚干涉原理，采用读数显微镜作为新的测量手段，研制了磁致伸缩系数测量装置，精确测量铽镝铁合金和Q235碳素结构钢在弱磁场中的磁致伸缩系数。该装置具有测量方法简单、直观，且精度很高的特点。%According to the principle of equal thickness interference wedge,a device for measuring magnetostriction coefficient was devised by using a new measurement method,i.e.reading microscope.Then the device was used to accurately measure magnetostriction coefficient of TbDyFe alloy and Q235 carbon steel in a weak magnetic field.The measurements show that this device is easy to use,directly visible,and highly accurate.