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Proceedings Paper

Vibro-impacting power harvester
Author(s): Scott Moss; Ian Powlesland; Stephen Galea; Gregory Carman
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Paper 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.

Paper Details

Date Published: 9 April 2010
PDF: 12 pages
Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 76431A (9 April 2010); doi: 10.1117/12.848897
Show Author Affiliations
Scott Moss, Defence Science and Technology Organisation (Australia)
Ian Powlesland, Defence Science and Technology Organisation (Australia)
Stephen Galea, Defence Science and Technology Organisation (Australia)
Gregory Carman, Univ. of California, Los Angeles (United States)

Published in SPIE Proceedings Vol. 7643:
Active and Passive Smart Structures and Integrated Systems 2010
Mehrdad N. Ghasemi-Nejhad, Editor(s)

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