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Open AccessArticle

Effect of Weight on the Resonant Tuning of Energy Harvesting Devices Using Giant Magnetostrictive Materials

1
Department of Mechanical Engineering, College of Engineering, Ibaraki University, 4-12-1 Nakanarusawa-cho, Hitachi 316-8511, Japan
2
Hitachi Power Solutions Co., Ltd., 3-2-2 Saiwai-cho, Hitachi 317-0073, Japan
*
Author to whom correspondence should be addressed.
Materials 2018, 11(4), 581; https://doi.org/10.3390/ma11040581
Received: 23 March 2018 / Revised: 7 April 2018 / Accepted: 7 April 2018 / Published: 10 April 2018
(This article belongs to the Special Issue Magnetostrictive Composite Materials)
This study deals with the numerical and experimental study of the effect of weight on the resonant tuning and energy harvesting characteristics of energy harvesting devices using giant magnetostrictive materials. The energy harvesting device is made in a cantilever shape using a thin Terfenol-D layer, stainless steel (SUS) layer and a movable proof mass, among other things. In this study, two types of movable proof mass were prepared, and the device was designed to adjust its own resonant frequency automatically to match external vibration frequency in real time. Three-dimensional finite element analysis (FEA) was performed, and the resonant frequency, tip displacement, and output voltage in the devices were predicted and measured, and the simulation and experiment results were compared. The effects of the weight of the proof mass on self-tuning ability and time-varying behavior were then considered in particular. View Full-Text
Keywords: cantilever; magnetostrictive material; energy harvesting; self-tuning cantilever; magnetostrictive material; energy harvesting; self-tuning
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MDPI and ACS Style

Mori, K.; Horibe, T.; Ishikawa, S. Effect of Weight on the Resonant Tuning of Energy Harvesting Devices Using Giant Magnetostrictive Materials. Materials 2018, 11, 581.

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