Effect of guideway discontinuities on magnetic levitation and drag forces

Transients in the lift and drag forces on a NdFeB permanent magnet were observed as the magnet passed over various discontinuities in a rotating aluminum disk at velocities of 4 to 25 m/s. For full cuts in the disk, the amplitude of the lift and drag transients and the wave form of the drag transien...

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Veröffentlicht in:	Journal of applied physics 1991-11, Vol.70 (10), p.6507-6509
Hauptverfasser:	ROSSING, T. D, KORTE, R, HULL, J. R
Format:	Artikel
Sprache:	eng
Schlagworte:	360104 - Metals & Alloys- Physical Properties ALLOYS BORON ALLOYS Condensed matter: electronic structure, electrical, magnetic, and optical properties DRAG Exact sciences and technology IRON ALLOYS IRON BASE ALLOYS LEVITATION MAGNETS MATERIALS SCIENCE MOTION NEODYMIUM ALLOYS PERMANENT MAGNETS Physics Properties of type I and type II superconductors RARE EARTH ALLOYS ROTATION Superconductivity TRANSIENTS
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Beschreibung
Zusammenfassung:	Transients in the lift and drag forces on a NdFeB permanent magnet were observed as the magnet passed over various discontinuities in a rotating aluminum disk at velocities of 4 to 25 m/s. For full cuts in the disk, the amplitude of the lift and drag transients and the wave form of the drag transient depend on the width, and the amplitudes are much larger than for partial cuts. The use of a backing plate to join two cut segments is ineffective.
ISSN:	0021-8979 1089-7550
DOI:	10.1063/1.350370