Experimental verification of energy harvesting performance in plate-like structures with embedded acoustic black holes

L. Zhao, Stephen Clarke Conlon, F. Semperlotti

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

4 Scopus citations

Abstract

We present an overview of the experimental performance of a piezoelectric-based energy harvesting system in plate-like structures with embedded Acoustic Black Holes (ABH). The ABH is an integral feature that can be embedded in the host structure to create areas having large accumulated energy density under broadband excitation conditions. Steady state and transient vibration experiments are conducted on a plate-like structure having three embedded ABH elements. Measurements on a flat (non-tapered) plate are also provided for the direct assessment of the performance of the ABH tapered system. Experimental data are collected using a scanning laser vibro meter which provides full field visualization of the effects of the ABH on the vibration pattern. As expected, the propagating wave is progressively slowed down as it travels through the ABH and its wavelength is compressed, therefore producing a broadband energy accumulation mechanism. Results show that the tailored structural design allows a drastic increase in the harvested energy for both the steady state and the transient excitation.

Original languageEnglish (US)
Title of host publicationINTER-NOISE 2015 - 44th International Congress and Exposition on Noise Control Engineering
PublisherThe Institute of Noise Control Engineering of the USA, Inc.
StatePublished - 2015
Event44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015 - San Francisco, United States
Duration: Aug 9 2015Aug 12 2015

Other

Other44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015
CountryUnited States
CitySan Francisco
Period8/9/158/12/15

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Zhao, L., Conlon, S. C., & Semperlotti, F. (2015). Experimental verification of energy harvesting performance in plate-like structures with embedded acoustic black holes. In INTER-NOISE 2015 - 44th International Congress and Exposition on Noise Control Engineering The Institute of Noise Control Engineering of the USA, Inc..