Artículos de revistas
Fast detection of the magnetic easy axis on steel sheet using the continuous rotational Barkhausen method
Fecha
2012Registro en:
NDT & E INTERNATIONAL, OXFORD, v. 45, n. 1, supl. 4, Part 1-2, pp. 148-155, JAN, 2012
0963-8695
10.1016/j.ndteint.2011.10.003
Autor
Morgan, Manuel Alfredo Caldas
Padovese, Linilson Rodrigues
Institución
Resumen
The magnetic behaviour of most commercial ferromagnetic steels is usually anisotropic presenting a magnetic easy axis. Changes in the direction of this axis can be related to mechanical changes and anomalies that occur in the fabrication process. The present work describes a method that uses a device with permanent magnets to create a precise rotational magnetic field. The device measures continuous Magnetic Barkhausen Noise signals related to the angle of magnetization, in order to determine the direction of the macroscopic magnetic easy axis. It also offers the possibility of obtaining real time parameters that quantify the magnetic anisotropy of the sample. (C) 2011 Elsevier Ltd. All rights reserved.