| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dupré, Luc
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2022Stress-dependent magnetic equivalent circuit for modeling welding effects in electrical steel laminationscitations
- 2020Magnetic properties of silicon steel after plastic deformationcitations
- 2018Comparison between collective coordinate models for domain wall motion in PMA nanostrips in the presence of the Dzyaloshinskii-Moriya interactioncitations
- 2016Influence of stator slot openings on losses and torque in axial flux permanent magnet machinescitations
- 2015A collective coordinate approach to describe magnetic domain wall dynamics applied to nanowires with high perpendicular anisotropycitations
- 2015Transverse domain wall based logic and memory concepts for all-magnetic computing
- 2015Logic and memory concepts for all-magnetic computing based on transverse domain wallscitations
- 2014Influence of material defects on current-driven vortex domain wall mobilitycitations
- 2014Axial-flux PM machines with variable air gapcitations
- 2013A numerical approach to incorporate intrinsic material defects in micromagnetic simulations
- 2013Influence of disorder on vortex domain wall mobility in magnetic nanowires
- 2012A DTI-based model for TMS using the independent impedance method with frequency-dependent tissue parameterscitations
- 2010Comparison of Nonoriented and Grain-Oriented Material in an Axial Flux Permanent-Magnet Machinecitations
- 2009Fatigue damage assessment by the continuous examination of the magnetomechanical and mechanical behaviorcitations
- 2003Magnetic properties of Fe100-x-ySixPy (0 <= x <= 4, 0 <= y <= 0,6) soft magnetic composites prepared by diffusion sintering
- 2002Numerical evaluation of the influence of anisotropy on the Eddy currents in laminated ferromagnetic alloyscitations
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article
Magnetic properties of silicon steel after plastic deformation
Abstract
The energy efficiency of electric machines can be improved by optimizing their manufacturing process. During the manufacturing of ferromagnetic cores, silicon steel sheets are cut and stacked. This process introduces large stresses near cutting edges. The steel near cutting edges is in a plastically deformed stress state without external mechanical load. The magnetic properties of the steel in this stress state are investigated using a custom magnetomechanical measurement setup, stress strain measurements, electrical resistance measurements, and transmission electron microscopic (TEM) measurements. Analysis of the core energy losses is done by means of the loss separation technique. The silicon steel used in this paper is non-grain oriented (NGO) steel grade M270-35A. Three differently cut sets of M270-35A are investigated, which differ in the direction they are cut with respect to the rolling direction. The effect of sample deformation was measured—both before and after mechanical load release—on the magnetization curve and total core energy losses. It is known that the magnetic properties dramatically degrade with increasing sample deformation under mechanical load. In this paper, it was found that when the mechanical load is released, the magnetic properties degrade even further. Loss separation analysis has shown that the hysteresis loss is the main contributor to the additional core losses due to sample deformation. Releasing the mechanical load increased the hysteresis loss up to 270% at 10.4% pre-release strain. At this level of strain, the relative magnetic permeability decreased up to 45% after mechanical load release. Manufacturing processes that introduce plastic deformation are detrimental to the local magnetic material properties.