用磁感應(yīng)法測量金屬絲楊氏模量的方法

根據(jù)霍爾器件能構(gòu)成均勻的腔體磁場，提出了一種用磁感應(yīng)法測量金屬絲楊氏模量的方法。通過導(dǎo)磁鐵微移動影響腔體磁路變化確定了霍爾電壓與位移函數(shù)的關(guān)系，計算出了K值。最后將其與拉伸法測量金屬絲楊氏模量的兩種測量方法結(jié)果值進行了比較：在霍爾器件靜態(tài)輸入-輸出特性下，所測楊氏模量有較大改善。
關(guān) 鍵 詞 磁感應(yīng); 霍爾器件; 位移; 楊氏模量

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