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Proceedings Paper

One and three dimensional models for the dynamical sensing response of Galfenol with applications to energy harvesting
Author(s): Philip Weetman; George Akhras
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Paper Abstract

One and three-dimensional computational models for the dynamical sensing response of Galfenol based magnetostrictive devices are developed. The sensing model calculates the fraction of magnetic moments oriented along each of the energetically preferred directions of the crystal as a function of time, which can then be used to determine the time evolution of the total magnetization. Results from the sensing model are compared to quasi-static loading experiments for validation and extraction of phenomenological parameters. As a sample application, the sensing model is incorporated into an AC energy harvesting circuit to predict the magnetization and energy harvested under dynamical loading conditions.

Paper Details

Date Published: 31 March 2010
PDF: 11 pages
Proc. SPIE 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010, 76440R (31 March 2010); doi: 10.1117/12.847593
Show Author Affiliations
Philip Weetman, Royal Military College of Canada (Canada)
George Akhras, Royal Military College of Canada (Canada)


Published in SPIE Proceedings Vol. 7644:
Behavior and Mechanics of Multifunctional Materials and Composites 2010
Zoubeida Ounaies; Jiangyu Li, Editor(s)

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