Analysis of the magnetic fields in magnetostrictive rare earth-iron transducers

Journal Article · Thu Mar 01 04:00:00 EST 1990 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/20.106482· OSTI ID:6382246

Claeyssen, F; Boucher, D ^[1]; Foggia, A ^[2]; Sabonnadiere, E ^[3]

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1. GERDSM, DCAN Toulon, DCN, Le Brusc, 83140 Six-Four-Les-Plaqes (FR)
2. ENSIEG, BP46, 38402 Saint-Martin-d'Heres (FR)
3. CEDRAT Rec., ZIRST, 38240 Meylan (FR)

The magnetic problems encountered in the design of underwater transducers based in magnetostrictive Rare Earth-Iron alloys are approached using the finite element package FLUX2D. Dynamic magnetic circuit design is studied using the concept of open magnetic circuit. Eddy current computations show that this effect can be accurately taken into account by an analytical method. The presence of leakage flux due to the low permeability of the magnetostrictive alloy is fully revealed with finite element computations and is expressed by low magnetic coupling factors. The results of the systematic study of this coefficient and of the coil quality factor are presented. Different solutions for the magnetic bias using permanent magnets are discussed.

• OSTI ID: 6382246
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA) Vol. 26:2; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
ALLOYS
COMPUTER CODES
F CODES
IRON ALLOYS
LEVELS
MAGNETIC CIRCUITS
MAGNETIC FLUX
MAGNETIC PROPERTIES
MAGNETOSTRICTION
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
TRANSDUCERS
UNDERWATER