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Proceedings Article

Vibro-impacting power harvester

[+] Author Affiliations
Scott Moss, Ian Powlesland, Stephen Galea

Defence Science and Technology Organisation (Australia)

Gregory Carman

Univ. of California, Los Angeles (USA)

Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 76431A (April 09, 2010); doi:10.1117/12.848897
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From Conference Volume 7643

  • Active and Passive Smart Structures and Integrated Systems 2010
  • Mehrdad N. Ghasemi-Nejhad
  • San Diego, California, USA | March 07, 2010

abstract

The certification of retro-fitted structural health monitoring (SHM) systems for use on aircraft raises a number of challenges. One critical issue is determining the optimal means of supplying power to these systems, given that access to the existing aircraft power-system is often problematic. Previously, the DSTO has shown that a structural-strain based energy harvesting approach can be used to power a device for SHM of aircraft structure. Acceleration-based power harvesting from airframes can be more demanding than a strain based approach because the vibration spectrum of an aircraft structure can vary dynamically with flight conditions. A vibration spectrum with varying frequency may severely limit the power harvested by a single-degree-of-freedom resonance-based device, and hence a frequency agile or (relatively) broadband device is often required to maximize the energy harvested. This paper reports on an investigation into the use of a vibro-impact approach to construct an acceleration-based power harvester that can operate in the frequency range 29-41 Hz.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Scott Moss ; Ian Powlesland ; Stephen Galea and Gregory Carman
"Vibro-impacting power harvester", Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 76431A (April 09, 2010); doi:10.1117/12.848897; http://dx.doi.org/10.1117/12.848897


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