Measurement of arbitrary dynamic magnetostriction under alternating and rotating field

Abstract

Arbitrary dynamic magnetostriction under alternating and rotating fleld is measured by using two-dimensional magnetk measurement technique with three-axial strain gage, whkh provides its output in direction inclined 45', 90', and 135" to the rolling direction of a sampk sheet. By this technique the arbitrary dynamic magnetostriction is expressed with a strain tensor. That is, the elements of the tensor can be computed with the measured magnetostrktion in each direction. Therefore, the magnetostriction in an arbitrary direction under alternating and rotating fleld excitation can be gotten from this tensor expression.

Vector Magnetic Technology for Development of High Efficiency Machines in Oita National Project

“…However, the characteristic of magnetostriction measured by conventional evaluation method does not become a reference. Then we proposed and reported the two-dimensional magnetostriction by the tensor method using three-axial strain gauge [7]. Fig.…”

Two-dimensional magnetostriction under vector magnetic characteristic

“…We developed a new measurement method for measuring the vector magnetic characteristic and twodimensional magnetostriction of the electrical steel sheet. [4][5][6][7][8] In the new measurement method, it is possible to evaluate an angle (h BH ) between the magnetic flux density vector and the magnetic field strength vector, and an angle (h Bk ) between the magnetic flux density vector and the direction of maximum magnetostriction, as shown in Fig. 1.…”

Crystallographic and magnetostriction properties of Fe and FeB-alloy thin films formed on MgO(100) single-crystal substrates

“…In order to apply soft magnetic materials for such practical applications, it is important to understand the magnetostriction behavior under rotating magnetic fields. However, there are few reports on the magnetostriction behavior under rotating fields [1][2][3]. The magnetostriction is considered to be influenced by the magnetic anisotropy and the crystallographic property of the material.…”