Determination of magnetisation conditions in a Double-Core Barkhausen Noise measurement set-up
PBN-AR
Instytucja
Wydział Fizyki Technicznej i Matematyki Stosowanej (Politechnika Gdańska)
Informacje podstawowe
Główny język publikacji
ENG
Czasopismo
JOURNAL OF NONDESTRUCTIVE EVALUATION
ISSN
0195-9298
EISSN
Wydawca
DOI
URL
Rok publikacji
2015
Numer zeszytu
16
Strony od-do
100-110
Numer tomu
34
Identyfikator DOI
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Słowa kluczowe
ELECTROMAGNETIC FINITE ELEMENT METHOD DYNAMIC MAGNETISATION OF BULK VOLUME EDDY CURRENTS MAGNETIC BARKHAUSEN EFFECT (MBN)
Streszczenia
Język
Treść
The magnetic Barkhausen effect is useful forassessing 1D and 2D stress states of ferromagnetic steelobjects. However, its extension to technically importantmaterials, such as duplex anisotropic steels, remains challenging. The determination of magnetisation inside the studied object and the electromagnet for various geometries, materials and magnetisation angles is a key issue.Three-dimensional, dynamic finite element analysis has beenapplied to reproduce time-varying fields inside and outsidethe prototype of a double-core magnetising setup. Useful relationships between characteristics (peak height and localtion) andmagnetic induction vector have been proposed. Thequalitative plausibility of simulation has been validated withan experiment and an analytic formula of skin depth. Theangular anisotropy of magnetic Barkhausen effect (MBN) inan isotropic sample has been shown in simulation and confirmed experimentally. The numerical model, despite somelimitations, seems to be an efficient tool for calibratingstress/MBN relationships at least in isotropic structural steelcomponents.
Inne
System-identifier
135665
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