Conductivity Lift-off Invariance and measurement of permeability for ferrite metallic plates
Conductivity Lift-off Invariance and measurement of permeability for ferrite metallic plates
复制标题
DOI：
10.1016/j.ndteint.2018.01.007
复制
发表时间：
2018-04-01
影响因子：
4.2
通讯作者：
Yin, Wuliang
中科院分区：
文献类型：
--
作者：
Lu, Mingyang;Xu, Hanyang;Yin, Wuliang
本文发现并研究了一种具有受控提离的电导率不变性现象。发现在一定的提离下，电导率对电感的影响被消除/减小。基于这一现象，提出了一种新的磁导率测量方法。仿真和实验数据验证了该方法的有效性。在不考虑渗透率影响的情况下，该方法可以较好地估计渗透率（误差为2.86%）。
In this paper, a Conductivity Invariance Phenomenon with a controlled lift-off is discovered and studied. It is found that at certain lift-off, the effect of conductivity influence on inductance is eliminated/reduced. Based on this phenomenon, a novel permeability measurement approach is proposed. The proposed approach was verified by both simulation and experimental data. And the permeability can be estimated in a reasonable accuracy (with an error of 2.86%) by the proposed approach without the influence of its conductivity.