【摘要】 简述超磁致伸缩材料及其特性测量原理,设计了用应变片法和光杠杆法分别测量微小长度变化量,并用计算机采集数据,实现了合金材料超磁致伸缩系数计算机实时测量的实验,得到了两种测量方法测量超磁致伸缩系数在误差允许范围内一致的结果。更多还原

【Abstract】 Giant magnetostrictive materials and their properties measurement principle were introduced.Experiment was designed to measure alloy giant magnetostrictive coefficient by strain gauges method and optical lever method with computer data acquisition.The measurement data were discussed and consistent results were obtained by two kinds of measurement methods.Dilatation coefficient of magnetostrictive material was obtained in acceptable error.更多还原