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    Experimental Investigation of the Mechanical Properties and Auxetic Behavior of Iron-Gallium Alloys

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    No. of downloads: 2129

    Date
    2009
    Author
    Schurter, Holly Marie
    Advisor
    Flatau, Alison B
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    Abstract
    Iron-gallium alloys (known as Galfenol) are a unique material that have shown great potential for numerous applications. They exhibit a strong magneto-mechanical coupling, otherwise known as magnetostriction, which lends itself very well to transducer applications, from the nano-scale to macro scale. In addition, Galfenol is one of only a few metal alloys known to exhibit large auxetic or negative Poisson's ratio behavior. In order to develop any Galfenol-based applications, it will be necessary to understand its mechanical behavior. The goal of the research presented in this thesis therefore is to measure the elastic properties of Galfenol for a range of compositions in order to create a database, as well as present trends in the elastic properties. This is achieved through tensile testing of single-crystal Galfenol dogbone-shaped specimens and through resonant ultrasound spectroscopy (RUS) of small parallelepiped samples.
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    http://hdl.handle.net/1903/9378
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    • Aerospace Engineering Theses and Dissertations
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