Magnetostrictive clad steel plates for high-performance vibration energy harvesting

Autor: Daiki Chiba, Fumio Narita, Ryuichi Onodera, Zhenjun Yang, Tsuyoki Tayama, Kenya Nakajima
Rok vydání: 2018
Předmět:
Zdroj: Applied Physics Letters. 112:073902
ISSN: 1077-3118
0003-6951
DOI: 10.1063/1.5016197
Popis: Energy harvesting technology is becoming increasingly important with the appearance of the Internet of things. In this study, a magnetostrictive clad steel plate for harvesting vibration energy was proposed. It comprises a cold-rolled FeCo alloy and cold-rolled steel joined together by thermal diffusion bonding. The performances of the magnetostrictive FeCo clad steel plate and conventional FeCo plate cantilevers were compared under bending vibration; the results indicated that the clad steel plate construct exhibits high voltage and power output compared to a single-plate construct. Finite element analysis of the cantilevers under bending provided insights into the magnetic features of a clad steel plate, which is crucial for its high performance. For comparison, the experimental results of a commercial piezoelectric bimorph cantilever were also reported. In addition, the cold-rolled FeCo and Ni alloys were joined by thermal diffusion bonding, which exhibited outstanding energy harvesting performance. Th...
Databáze: OpenAIRE