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Modeling of magnetostrictive Galfenol sensor and validation using four point bending test

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3 Author(s)
Datta, Supratik ; Department of Aerospace Engineering, University of Maryland, College Park, Maryland 20742 ; Atulasimha, Jayasimha ; Flatau, Alison B.

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A magnetomechanical bending model has been developed to predict the magnetic induction, elastic, and magnetostrictive strain and bending stress in a magnetostrictive member subjected simultaneously to bending load and dc magnetic bias field. This model was obtained by coupling Euler-Bernoulli beam theory with an energy-based statistical model. The bending model predictions were within 10% of the experimental results obtained from a uniquely devised four point bending test of Galfenol (nominal composition of 84 at. % Fe and 16 at. % Ga) performed under different magnetic bias fields.

Published in:

Journal of Applied Physics  (Volume:101 ,  Issue: 9 )