Soft magneto-sensitive elastomer and polyvinylidene fluoride polymer based nonlinear piezoelectric energy harvesting: Design, modelling and experiment

Zhaoshu Yang, Lihua Tang, Mengying Xie, Shuaishuai Sun, Weihua Li, Kean Aw

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

In this paper, a broadband vibrational energy harvester (VEH) is developed based on a soft magneto-sensitive elastomer (SMSE). The utilization of SMSE provides the VEH with a strong softening effect when it is subjected to the magnetic field of a permanent magnet. A polyvinylidene fluoride (PVDF) layer is attached to the SMSE to convert vibrational energy into electricity. A magneto-electro-mechanical model based on finite element method is developed and is further reduced using assumed modes. Two prototypes are fabricated with different SMSE thicknesses (3 mm and 5 mm respectively). Frequency sweep experiments are conducted to investigate their broadband behavior. The difference between jumping frequencies are 2.39 and 4.34 Hz at a low acceleration level of 0.3 g. With the broadband characteristics of SMSE, the two prototypes are capable of providing power over a wide frequency range and generating an average power of 0.096 μW and 0.11 μW respectively with a load of 4.7 MΩ.

Original languageEnglish
Article number015031
JournalSmart Materials and Structures
Volume28
Issue number1
DOIs
Publication statusPublished - 2019 Jan
Externally publishedYes

Keywords

  • energy harvesting
  • frequency bandwidth
  • magnetic polymer
  • nonlinear analysis
  • polyvinylidene fluoride polymer

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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