Vibro-impacting power harvester

Scott Moss; Ian Powlesland; Stephen Galea; Gregory Carman

doi:10.1117/12.848897

9 April 2010 Vibro-impacting power harvester

Scott Moss, Ian Powlesland, Stephen Galea, Gregory Carman

Proceedings Volume 7643, Active and Passive Smart Structures and Integrated Systems 2010; 76431A (2010) https://doi.org/10.1117/12.848897
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

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.

Citation Download 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 (9 April 2010); https://doi.org/10.1117/12.848897

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