Optimization of sensor design for Barkhausen noise measurement using finite element analysis | Zendy

Neelam Prabhu Gaunkar | Zendy; Orfeas Kypris | Zendy; Ikenna C. Nlebedim | Zendy; David Jiles | Zendy

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Optimization of sensor design for Barkhausen noise measurement using finite element analysis

Author(s) -

Neelam Prabhu Gaunkar,

Orfeas Kypris,

Ikenna C. Nlebedim,

David Jiles

Publication year - 2014

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4864438

Subject(s) - barkhausen effect , materials science , finite element method , ferrite core , core (optical fiber) , magnetic core , magnetic flux , permeability (electromagnetism) , curvature , saturation (graph theory) , barkhausen stability criterion , magnetization , magnet , acoustics , nuclear magnetic resonance , composite material , magnetic field , structural engineering , electromagnetic coil , mechanical engineering , physics , electrical engineering , geometry , engineering , genetics , quantum mechanics , mathematics , combinatorics , membrane , biology

The effects of design parameters for optimizing the performance of sensors for magnetic Barkhausen emission measurement are presented. This study was performed using finite element analysis. The design parameters investigated include core material, core-tip curvature, core length, and pole spacing. Considering a combination of permeability and saturation magnetization, iron was selected as the core material among other materials investigated. Although a flat core-tip would result in higher magnetic flux concentration in the test specimen, a curved core-tip is preferred. The sensor-to-specimen coupling is thereby improved especially for materials with different surface geometries. Smaller pole spacing resulted in higher flux concentration.

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