The concurrent suppression of an energy harvesting from surface vibrations: Experimental investigations

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

Abstract

Vibrational energy harvesting devices are oftentimes constructed in a manner identical to classical tuned-massdampers used in vibration control applications. However, many applications and models in past work assume that the harvesters will have negligible influence on the host structure (e.g. harvesters on a bridge). In contrast, this work adopts the perspective that the energy harvester is analogous to an electromechanical vibration absorber, attenuating the structural vibrations via a dominant mechanical influence while converting the absorbed energy into electric power. One embodiment of a device serving these two purposes-passive vibration attenuation and energy harvesting-is introduced. The device utilizes a distributed piezoelectric spring layer such that as the spring is strained between the top mass layer and the vibrating host structure the piezoelectric spring generates a voltage potential across its electrodes. Two experimental studies are detailed which investigate the capability for energy harvesting vibration absorbers to meet both goals. It is found that achievement of both objectives may require compromise but with proper device design still yields a viable electrical output.

Original languageEnglish (US)
Title of host publicationActive and Passive Smart Structures and Integrated Systems 2012
DOIs
StatePublished - 2012
EventActive and Passive Smart Structures and Integrated Systems 2012 - San Diego, CA, United States
Duration: Mar 12 2012Mar 15 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8341
ISSN (Print)0277-786X

Other

OtherActive and Passive Smart Structures and Integrated Systems 2012
CountryUnited States
CitySan Diego, CA
Period3/12/123/15/12

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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