Evaluation of vibration energy harvesting using a magnetostrictive iron–cobalt/nickel-clad plate

Abstract

The design of miniaturized, long-lasting power supplies for portable internet of things (IoT) equipment has been identified as a critical problem constraining further development of the IoT. A promising methodology is able to resolve the problem by harvesting dissipated energy such as vibration in the environment or in a system to form self-powered microsystems. In this work, the performance of vibration energy harvesting using a magnetostrictive iron-cobalt/nickel (FeCo/ Ni)-clad plate cantilever was examined both theoretically and experimentally. The experimental results indicate that the output power of the FeCo/Ni-clad plate cantilever shows significant improvement in comparison to a single FeCo plate, as a result of the inverse magnetostrictive properties of the FeCo and Ni layers in response to tension or compression. Finite element analysis illustrates how the unidirectional and identical magnetic induction in the upper and lower sides (i.e. the FeCo and Ni layers) gives rise to this enhanced output. The analysis also demonstrates the cancellation of the positive and negative magnetic induction within the interior of the single FeCo plate. This study not only provides insights into the magnetic features of a FeCo/Ni-clad plate but also proposes a feasible method for realizing industrial applications.

Fabrication, Modeling and Characterization of Magnetostrictive Short Fiber Composites

“…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.…”

Effect of Notches on Magnetic Induction Variation for Magnetostrictive Clad Plate

“…During this process, the residual stresses of the FeCo and Ni layers were 104.5 and 44.5 MPa, respectively. (20) After that, the bonded plate was cut into several cantilevers with the same dimensions of 70 × 5 × 1 mm 3 . The harvesting performance characteristics of two groups, namely, non-notch and notch groups, were compared.…”

Negative Magnetostrictive Paper Formed by Dispersing CoFe 2 O 4 Particles in Cellulose Nanofibers

“…Since that time, researchers have developed various magnetostrictive materials such as Tb-Dy-Fe alloys (Terfenol-D), Fe-Ga alloys (Galfenol), Fe-Co alloys, and CoFe 2 O 4 (cobalt ferrites) [14][15][16][17][18]. Magnetostrictive materials, composites, and devices are also attracting attention in the energy harvesting eld [19][20][21][22][23][24]. Terfenol-D and Galfenol are well-known giant magnetostrictive alloys showing huge magnetostriction at room temperature, but are brittle and expensive [1,16].…”