电工钢.用单个薄片和艾普斯坦试样的磁致伸缩特性的测量方法

[中文适用范围]： 本技术报告描述了使用光学传感器和加速度计测量 IEC 60404-2 中规定的电工钢单片样品（优选长 500 毫米、宽 100 毫米）和 Epstein 条样品磁致伸缩的一般原理和技术细节。这些方法适用于从任何等级的电工钢板和钢带获得的测试样本。磁致伸缩的特性是针对正弦感应电压、指定的磁极化峰值和指定的频率来确定的。测量是在 23 °C ± 5 °C 的环境温度下对首先消磁的测试样本进行的。 [外文原描述]： IEC/TR 62581:2010(E) describes the general principles and technical details of the measurement of the magnetostriction of single sheet specimens preferably 500 mm long and 100 mm wide and Epstein strip specimens, specified in IEC 60404-2, of electrical steel by means of optical sensors and accelerometers. These methods are applicable to test specimens obtained from electrical steel sheets and strips of any grade. The characteristics of magnetostriction are determined for a sinusoidal induced voltage, for specified peak values of magnetic polarization and for a specified frequency. The measurements are made at an ambient temperature of 23 °C +/- 5 °C on test specimens which have first been demagnetized.