Vibration Mode-Dependent Energy Harvesting Characteristics of Magnetoelectric Composite Cantilevers

Author

Kwon, Yongsang ; Lee, Hoyoung ; Lee, Jungchul ; Choi, Bumkyoo

Author_Institution

Dept. of Mech. Eng., Sogang Univ., Seoul, South Korea

Volume

12

Issue

11

fYear

2012

Firstpage

3271

Lastpage

3272

Abstract

In this letter, we simply fabricate magnetoelectric (ME) composite cantilevers through bonding 30 μm thick Metglas and 52 μm thick polyvinylidene fluoride with an epoxy, and report resonant and energy harvesting characteristics with applied DC and AC magnetic fields ranging from 0 to 3 kA/m. Generated ME voltages from a 40 mm long, 12.3 mm wide, and 112 μm thick cantilever are measured and analyzed as a function of the applied magnetic field. In our experiment, higher ME voltages are generated when both the DC and AC magnetic fields are present and the ME voltages around the second flexural bending mode are approximately five times higher than those around the first mode. The higher ME voltage with the second mode is also confirmed with finite element analysis.

Keywords

bending; cantilevers; energy harvesting; finite element analysis; polymers; vibrations; AC magnetic fields; DC magnetic fields; ME composite cantilevers; Metglas; epoxy; finite element analysis; flexural bending mode; magnetoelectric composite cantilevers; polyvinylidene fluoride; size 112 mum; size 12.3 mm; size 30 mum; size 40 mm; size 52 mum; vibration mode-dependent energy harvesting characteristics; Amorphous magnetic materials; Energy harvesting; Magnetic fields; Magnetic resonance; Magnetoelectric effects; Magnetostriction; Strain; Cantilever; energy harvesting; magnetoelectric; vibration mode;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2012.2211193

Filename

6259824