One and three dimensional models for the dynamical sensing response of Galfenol with applications to energy harvesting

Philip Weetman; George Akhras

doi:10.1117/12.847593

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30 March 2010 One and three dimensional models for the dynamical sensing response of Galfenol with applications to energy harvesting

Philip Weetman; George Akhras

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Proceedings Volume 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010; 76440R (2010) https://doi.org/10.1117/12.847593
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

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.

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Philip Weetman and George Akhras "One and three dimensional models for the dynamical sensing response of Galfenol with applications to energy harvesting", Proc. SPIE 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010, 76440R (30 March 2010); https://doi.org/10.1117/12.847593

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