Experimental Characterization of Galfenol (FeGa) Alloys
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Publisher:The Ohio State University
Series/Report no.:The Ohio State University. Department of Mechanical and Aerospace Engineering Honors Theses; 2014
Magnetostrictive materials are a class of smart materials which undergo a change in dimensional shape when subjected to a magnetic field. Galfenol, an alloy of iron and gallium, is a relatively new magnetostrictive material that exhibits favorable magnetostriction combined with mechanical robustness. These characteristics make Galfenol promising in the development of sensors and actuators. The research characterizes textured polycrystalline Galfenol alloys (Fe81.6Ga18.4) under both quasi-static and dynamic conditions, with a focus on understanding the sensing properties of this material. The research provides further improvements to a constitutive model that describes the non-linear piezomagnetic relationships of Galfenol over a range of stresses and applied magnetic fields. In addition, this research aids in the creation of guidelines for analyzing the actuation and sensing behavior of Galfenol, which will allow for improved design of Galfenol-based actuators and sensors.
Undergraduate Research Scholarship, 2012-2013
Academic Major: Mechanical Engineering
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