Experimental validation of a porous piezoelectric energy harvester

Germán Martínez-Ayuso, Hamed Haddad Khodaparast, Yan Zhang, Christopher R. Bowen, Michael I. Friswell, Alexander D. Shaw, Hadi Madinei, James I. Roscow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, a homogenised finite element model is developed to predict the energy harvesting capabilities of a porous piezoelectric energy harvester. The harvester consists of a porous piezoelectric patch bonded to a cantilever beam. The material properties of the porous piezoelectric material are estimated by the Mori-Tanaka homogenisation method, which is an analytical method that provides the material properties as a function of the porosity of the piezoelectric composite. These material properties are then used in a finite element model of the harvester that predicts the deformation and voltage output for a given base excitation of the cantilever beam, onto which the piezoelectric element is bonded. Experiments are performed to validate the numerical model, based on the fabrication and testing of several demonstrators composed of porous piezoelectric patches with different percentages of porosity bonded to an aluminium cantilever beam. The electrical load is simulated using a resistor and the voltage is measured to estimate the energy generated. The beam is excited in a range of frequencies close to the first and second modes using base excitation. The effects of the porosity and the assumptions made for homogenisation are discussed.

Original languageEnglish
Title of host publication8th Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017
PublisherInternational Center for Numerical Methods in Engineering
Pages630-641
Number of pages12
ISBN (Electronic)9788494690938
Publication statusPublished - Jan 2017
Event8th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 - Madrid, Spain
Duration: 5 Jun 20178 Jun 2017

Conference

Conference8th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017
CountrySpain
CityMadrid
Period5/06/178/06/17

Keywords

  • Energy harvesting
  • Model validation
  • Physical experiment
  • Piezoelectricity
  • Porous material

ASJC Scopus subject areas

  • Materials Science(all)
  • Energy(all)
  • Pollution

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  • Cite this

    Martínez-Ayuso, G., Khodaparast, H. H., Zhang, Y., Bowen, C. R., Friswell, M. I., Shaw, A. D., Madinei, H., & Roscow, J. I. (2017). Experimental validation of a porous piezoelectric energy harvester. In 8th Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 (pp. 630-641). International Center for Numerical Methods in Engineering.