Modeling of Effect of Plastic Deformation on Barkhausen Noise and Magnetoacoustic Emission in Iron With 2% Silicon

Before one models the effect of plastic deformation on magnetoacoustic emission (MAE), one must first treat non-180 super(deg) domain wall motion. In this paper, we take the Alessandro-Beatrice-Bertotti-Montorsi (ABBM) model and modify it to treat non-180 super(deg) wall motion. We then insert a mod...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2008-11, Vol.44 (11), p.3221-3224
Main Authors: SABLIK, Martin J, AUGUSTYNIAK, Boleslaw, DE CAMPOS, Marcos F, LANDGRAF, Femando J. G
Format: Article
Language:English
Subjects:
Applied sciences
Barkhausen effect
Cross-disciplinary physics: materials science
rheology
Deformation
Density
Dislocation density
Exact sciences and technology
Magnetism
Magnetoacoustic emission
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Other topics in materials science
Physics
Plastic deformation
Residual stress
Walls
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Summary:Before one models the effect of plastic deformation on magnetoacoustic emission (MAE), one must first treat non-180 super(deg) domain wall motion. In this paper, we take the Alessandro-Beatrice-Bertotti-Montorsi (ABBM) model and modify it to treat non-180 super(deg) wall motion. We then insert a modified stress-dependent Jiles-Atherton model, which treats plastic deformation, into the modified ABBM model to treat MAE and magnetic Barkhausen noise (HBN). In fitting the dependence of these quantities on plastic deformation, we apply a model for when deformation gets into the stage where dislocation tangles are formed, noting two chief effects, one due to increased density of emission centers owing to increased dislocation density, and the other due to a more gentle increase in the residual stress in the vicinity of the dislocation tangles as deformation is increased.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2008.2002803