Bill Armstrong memorial symposium: free energy model for magnetization and magnetostriction in stressed Galfenol alloys

Phillip G. Evans; Marcelo J. Dapino; James B. Restorff

doi:10.1117/12.720872

19 April 2007 Bill Armstrong memorial symposium: free energy model for magnetization and magnetostriction in stressed Galfenol alloys

Phillip G. Evans, Marcelo J. Dapino, James B. Restorff

Author Affiliations +

Proceedings Volume 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007; 652619 (2007) https://doi.org/10.1117/12.720872
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

We present a thermodynamic framework to quantify the magnetization and magnetostriction of Galfenol alloys in response to magnetic fields, mechanical stress, and/or stress-annealing. The framework utilizes only physical parameters and thus provides useful information for material characterization. Furthermore, we formulate the model in state-space form, thus facilitating the computational implementation for design and control of dynamic Galfenol devices.

Citation Download Citation

Phillip G. Evans, Marcelo J. Dapino, and James B. Restorff "Bill Armstrong memorial symposium: free energy model for magnetization and magnetostriction in stressed Galfenol alloys", Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 652619 (19 April 2007); https://doi.org/10.1117/12.720872

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