A multi-point loaded piezocomposite beam: Experiments on sensing and vibration energy harvesting

Patrick S. Heaney, Onur Bilgen

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

Abstract

A common configuration for a piezoelectric vibration energy harvester is the cantilevered beam with the piezoelectric device located near the beam root to maximize energy transduction. The beam curvature in this configuration is monotonically decreasing from root to tip, so the transduction per unit length of piezoelectric material decreases with increasing patch length. As an alternative to such conventional configuration, this paper proposes a so-called inertial four-point loading for beam-like structures. The effects of support location and tip mass on the beam curvature shapes are analyzed for four-point loaded cases to demonstrate the effect of these configurations on the total strain induced on the piezoelectric patch. These configurations are tested experimentally using several different support locations and compared with results from a baseline cantilevered beam. Performance comparisons of their power ratios are made, which indicate improvement in the transduction per unit strain of the four-point loading cases over the cantilevered configuration. The paper concludes with a discussion of potential applications of the inertial four-point loaded configuration.

Original languageEnglish (US)
Title of host publicationDevelopment and Characterization of Multifunctional Materials; Modeling, Simulation, and Control of Adaptive Systems; Integrated System Design and Implementation
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791851944
DOIs
StatePublished - Jan 1 2018
EventASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2018 - San Antonio, United States
Duration: Sep 10 2018Sep 12 2018

Publication series

NameASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2018
Volume1

Other

OtherASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2018
CountryUnited States
CitySan Antonio
Period9/10/189/12/18

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Civil and Structural Engineering

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  • Cite this

    Heaney, P. S., & Bilgen, O. (2018). A multi-point loaded piezocomposite beam: Experiments on sensing and vibration energy harvesting. In Development and Characterization of Multifunctional Materials; Modeling, Simulation, and Control of Adaptive Systems; Integrated System Design and Implementation (ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2018; Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/SMASIS2018-7941