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Dynamic behaviour of magneto-acoustic emission in a grain-oriented steel
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SYSNO ASEP 0473814 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dynamic behaviour of magneto-acoustic emission in a grain-oriented steel Author(s) Stupakov, Alexandr (FZU-D) RID, ORCID
Perevertov, Oleksiy (FZU-D) RID
Landa, Michal (UT-L) RIDNumber of authors 3 Source Title Journal of Magnetism and Magnetic Materials. - : Elsevier - ISSN 0304-8853
Roč. 426, Mar (2017), s. 685-690Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords magneto-acoustic emission ; magnetization dynamics ; Barkhausen noise ; surface field measurement ; magnetization waveform control Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GB14-36566G GA ČR - Czech Science Foundation (CSF) GA13-18993S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 ; UT-L - RVO:61388998 UT WOS 000397198500105 EID SCOPUS 85005847166 DOI 10.1016/j.jmmm.2016.10.142 Annotation Magneto-acoustic emission (MAE) in a grain-oriented electrical steel is measured in a wide range of the magnetizing frequencies fmag=0.5-100Hz at the controllable sinusoidal/triangular waveforms of the magnetic induction B(t). Magnetic field is measured directly by a Hall sensor positioned on the steel surface. Intensity of the MAE signal (rms value) follows a loss separation formula afmag+bfmag+c and reveals a linear relationship with the hysteresis loss. Number of the MAE individual pulses drops with the magnetizing frequency hyperbolically. Shape of the induction waveform at the fixed magnetizing amplitude and frequency has no visible impact on the above-mentioned behaviour. However, rms profiles of the MAE signal are driven by the field rate of change dH/dt. Integration of the MAE profiles allows to evaluate the hysteresis coercive field. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
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