Author(s)

Kaijie Zou, Yuqiong Zhao, Qin Nie, Jinghui Zhang, Jinnuo Shui

Corresponding Author

Yuqiong Zhao

ABSTRACT

Using optical lever, He Ne laser and several mirrors in the vertical plane, an experimental platform for measuring the magnetostrictive coefficient was set up. The relationship between the magnetostrictive coefficient and the length and diameter of metal rod was quantitatively studied when the magnetostrictive saturation of Fe Ni and Ni Zn alloys was not achieved. It was found that the magnetostrictive characteristic of metal rod was independent of the length but positively related to the diameter. By comparing the magnetostrictive characteristics in the steady magnetic field and the alternating magnetic field, that is, the dynamic method and the static method, it is proved that the measurement method is more accurate. By designing magnetostrictive measurement experiment suitable for teaching and scientific research, a new method for material selection in physical experiment teaching and scientific research experiment is provided.

KEYWORDS

Magnetostriction, optical lever, magnetostriction coefficient