Table of Contents
International Journal of Metals
Volume 2016 (2016), Article ID 1980930, 5 pages
http://dx.doi.org/10.1155/2016/1980930
Research Article

A Novel NDT Method for Coercive Force of Grain-Oriented Electrical Steel Applied in Cigarette Machines

1Research and Development Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, China
2Heavy Industry Engineering Center of China Ministry of Education, Taiyuan University of Science and Technology, Taiyuan 030024, China
3State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
4School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China

Received 19 June 2016; Accepted 10 August 2016

Academic Editor: Miaoquan Li

Copyright © 2016 Hao Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Coercive force of grain-oriented electrical steel applied in cigarette machines is tested by a novel NDT method in which Barkhausen noise was applied. Linear relationship between coercive force and Barkhausen noise of conventional and high-permeability electrical steel was built and the precision of the model was verified. Experimental results show that the coercive force is linearly related to Barkhausen noise. The variation of coercive force with magnetic induction intensity increase was also interpreted in view of magnetic domain changing process, and the correlation formula derivation of MBN and coercive force domain wall was illustrated as well.