用磁感应法测量金属丝杨氏模量的方法

根据霍尔器件能构成均匀的腔体磁场，提出了一种用磁感应法测量金属丝杨氏模量的方法。通过导磁铁微移动影响腔体磁路变化确定了霍尔电压与位移函数的关系，计算出了K值。最后将其与拉伸法测量金属丝杨氏模量的两种测量方法结果值进行了比较：在霍尔器件静态输入-输出特性下，所测杨氏模量有较大改善。
关 键 词 磁感应; 霍尔器件; 位移; 杨氏模量

Abstract The uniform cavity magnetic field can be formed by Hall device. This paper presents a method to measure the wire Young’s modulus by means of a magnetic induction approach is presented. Guide magnet small displacement influence is passed to change on distribution of carity magnetic field. The relationship between Hall voltage and displacement function is determined. K value is calculated. Finally, a comparetion between the measurement result values by the methods of magnetic induction and stretch is also made. The measured of Young’s modulus has improved greatly under the imput-output characteristic in Hall device.
Key words magnetic induction; Hall device; displacement; Young’s modulus