Backman, G., Lawton, B. and Morley, N.A. orcid.org/0000-0002-7284-7978 (2019) Magnetostrictive energy harvesting: materials and design study. IEEE Transactions on Magnetics, 55 (7). 4700206. ISSN 0018-9464
Abstract
In recent years, vibrational energy harvesting has established itself as a promising alternative to the use of batteries for powering microelectromechanical systems for large wireless sensor networks used in aerospace and building infrastructures. This paper has focused on the design and materials used in magnetostrictive cantilever energy harvesters. The study involved using both finite-element modeling to predict the resonance frequencies for different cantilever designs and magnetostrictive materials, followed by experimental measurements for validation. Two different magnetostrictive ribbons were investigated, Fe₁₋ₓGaₓ with four different compositions (x = 17.5; 19.5; 21; 28 at.%) and amorphous metallic glass Metglas 2605SC (Fe81B13.5Si3.5C2). From the modeling, it was determined that the resonance frequency was strongly dependent on the cantilever length, thickness, and density. Changing the cantilever design to a ``T'' shape was found to decrease the resonance frequency. The experimental results found that the output voltage measured depended on the cantilever dimensions, especially the thickness, the Ga concentration, and the cantilever design. The output voltages for Fe80.5Ga19.5 cantilevers were comparable with the same dimension Metglas cantilevers. The results of the finite-element modeling were validated by good agreement between the computational and experimental resonance frequencies measured.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Energy harvesting; Fe–Ga; magnetostriction; Metglas |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 30 Jan 2019 13:21 |
Last Modified: | 16 Nov 2021 13:17 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/TMAG.2019.2891118 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:141691 |