Magnetostrictive clad steel plates for high-performance vibration energy harvesting

Yang, Zhenjun; Nakajima, Kenya; Onodera, Ryuichi; Tayama, Tsuyoki; Chiba, Daiki; Narita, Fumio

doi:10.1063/1.5016197

Cited by 43 publications

(21 citation statements)

References 25 publications

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“…In order to develop a highly sensitive magnetostrictive material, amorphous Terfenol-D thin films were deposited on a Fe-Co substrate and the influence of heat treatment on the crystal structure, magnetostrictive property, and detection efficiency was studied [9]. On the other hand, magnetostrictive Fe-Co/Fe clad plates [10] and Fe-Co/Ni clad plates [11] were reported to serve as energy-harvesting devices with a high performance. It was shown that the output power of the magnetostrictive clad plates shows a significant improvement in comparison to a single magnetostrictive plate.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, Modeling and Characterization of Magnetostrictive Short Fiber Composites

et al. 2020

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Magnetostrictive materials have a wide variety of applications due to their great capability as sensors and energy-harvesting devices. However, their brittleness inhibits their applications as magnetostrictive devices. Recently, we developed a continuous magnetostrictive Fe-Co-fiber-embedded epoxy matrix composite to increase the flexibility of the material. In this study, we fabricated random magnetostrictive Fe-Co short fiber/epoxy composite sheets. It was found that the discontinuous Fe-Co fiber composite sheet has the magnetostrictive properties along the orientation parallel to the length of the sheet. Finite element computations were also carried out using a coupled magneto-mechanical model, for the representative volume element (RVE) of unidirectional aligned magnetostrictive short fiber composites. A simple model of two-dimensional, randomly oriented, magnetostrictive short fiber composites was then proposed and the effective piezomagnetic coefficient was determined. It was shown that the present model is very accurate yet relatively simple to predict the piezomagnetic coefficient of magnetostrictive short fiber composites. This magnetostrictive composite sheet is expected to be used as a flexible smart material.

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Section: Introductionmentioning

confidence: 99%

Fabrication, Modeling and Characterization of Magnetostrictive Short Fiber Composites

et al. 2020

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“…Ambient vibration-based energy harvesters with the ability to convert mechanical vibrations to electrical energy are among these technologies with potential applications for low-powered electronic devices. So far, vibration energy harvesters have been commonly based on four different conversion techniques namely piezoelectricity [2,3], electromagnetism [4,5], electrostatics [6] for MEMS technology and magnetostricton [7,8].…”

Section: Introductionmentioning

confidence: 99%

On the energy localization in weakly coupled oscillators for electromagnetic vibration energy harvesting

Zergoune¹,

Kacem²,

Bouhaddi³

2019

Smart Mater. Struct.

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The present paper investigates the implementation of the energy localization phenomenon for enhancing the output harvesting performance. Also in this paper, a linear electromagnetic vibration energy harvester with weakly magnetic coupling is proposed. The designed device is 2 degree-of-freedom (dof) oscillators, which functionalizes the energy localization phenomenon via a springmagnet array. The proposed concept is made up of moving magnets held by elastic springs and coupled by a repulsive magnetic force with a very low mechanical damping. The energy localization is achieved by mistuning the mass of one of the moving magnets. The experimental and theoretical results showing the benefits of the energy localization phenomenon are reported. The maximal average power density harvested by functionalizing the energy localization is P avg = 0.8 µW.cm −3 .g −2 .Hz −2 for a magnetic coupling β = 0.015 .

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“…More recently, we have fabricated magnetostrictive polymer composites, in which FeCo fibers were woven into polyester fabric, and discussed their sensor performance . We also have proposed a magnetostrictive clad steel plate for harvesting vibration energy . It comprised a cold‐rolled FeCo alloy and cold‐rolled steel joined together by thermal diffusion bonding, and the results indicated that the clad steel plate construct exhibits high voltage and power output compared to a single‐plate construct.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Inverse Magnetostrictive Effect through Stress Concentration for a Notch‐Introduced FeCo Alloy

et al. 2018

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The authors investigate the magnetic flux leakage for a class of magnetostrictive FeCo alloys with a notch undergoing compression and impact with respect to energy harvesting. The magnetic flux leakage plays a crucial role in the practical energy transition in terms of the features for energy harvesting. Therefore, the corresponding situations are systematically studied by combining finite element analysis (FEA) with practical experiments. The FeCo alloys are categorized into three groups with different three-dimensional notch shapes, and the depths of the notches are 0, 0.5, and 1 mm, respectively. The parameters in both the simulations and practical tests are completely consistent. The results of compression test carried out with a stepwiseincreasing stress from 0 to 100 MPa reveal that the variations of magnetic induced flux increase with the increasing depth of the notches. The following FEA herein provides a feasible interpretation that the stress concentration around the notch is largely responsible for the notch-induced enhancement. The findings of the impacting experiments simultaneously exhibit an analogous tendency that the output power is proportional to the depth of notch. Furthermore, the stress rate has no obvious effect on the output electricity. The maximum magnitude of the improvement for the output power increases by almost 400% comparing the specimens with notches of 0 and 1 mm. This study indicates a promising feasibility to achieve vibrationenergy harvesting from various irregular components.

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Magnetostrictive clad steel plates for high-performance vibration energy harvesting

Cited by 43 publications

References 25 publications

Fabrication, Modeling and Characterization of Magnetostrictive Short Fiber Composites

Fabrication, Modeling and Characterization of Magnetostrictive Short Fiber Composites

On the energy localization in weakly coupled oscillators for electromagnetic vibration energy harvesting

Enhancement of Inverse Magnetostrictive Effect through Stress Concentration for a Notch‐Introduced FeCo Alloy

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