Study of the influence of simultaneous variation of magnetic material microstructural features on domain wall dynamics

Autor(es)

Perez-Benitez, J. A. ^[1] ; Padovese, L. R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Engn Mecan, Escola Politecn, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Magnetism and Magnetic Materials; v. 322, n. 20, p. 3101-3105, OCT 2010.
• Citações Web of Science: 11

Resumo

The magnetic Barkhausen noise (MBN) is a phenomenon sensitive to several kinds of magnetic material microstructure changes, as well as to variations in material plastic deformation and stress. This fact stimulates the development of MBN-based non-destructive testing (NDT) techniques for analyzing magnetic materials, being the proposition of such a method, the main objective of the present study. The behavior of the MBN signal envelope, under simultaneous variations of carbon content and plastic deformation, is explained by the domain wall dynamics. Additionally, a non-destructive parameter for the characterization of each of these factors is proposed and validated through the experimental results. (C) 2010 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 08/10859-0 - Sistema Especialista para Ensaios Não Destrutivos Magnéticos
• Beneficiário: José Alberto Pérez Benitez
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado