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Proceedings Paper

On the self-powering of SHM techniques using seismic energy harvesting
Author(s): Yi-Chieh Wu; Mickaël Lallart; Linjuan Yan; Daniel Guyomar; Claude Richard
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Paper Abstract

Growing demands in self-powered, wireless Structural Health Monitoring (SHM) systems has placed a particular attention on energy harvesting products. While most of works done in this domain considered directly coupled active materials, it may be preferential to use seismic (or indirect-coupled) harvesters for maintenance issues. With a seismic type harvester, a model considering constant vibration magnitude excitation is no longer valid as electrical energy extraction from mechanical vibration leads to a reduction of the vibration magnitude of the harvester because of electromechanical coupling effect. This paper extends a Single Degree of Freedom (SDOF) model with a constant force or acceleration excitation to a Two Degree of Freedom (TDOF) approach to describe the tradeoff between the damping effect on the host structure and the harvested power due to the mechanical to mechanical coupling effect. When the harvester mass to host structure mass ratio is around 10-3, the maximal power is obtained and the host structure has then a sudden displacement reduction due to the strong mechanical to mechanical coupling. Its application to self-powered SHM will be also introduced in the paper.

Paper Details

Date Published: 17 April 2013
PDF: 12 pages
Proc. SPIE 8695, Health Monitoring of Structural and Biological Systems 2013, 86951M (17 April 2013); doi: 10.1117/12.2005898
Show Author Affiliations
Yi-Chieh Wu, Institut National des Sciences Appliquées de Lyon (France)
Mickaël Lallart, Institut National des Sciences Appliquées de Lyon (France)
Linjuan Yan, Institut National des Sciences Appliquées de Lyon (France)
Daniel Guyomar, Institut National des Sciences Appliquées de Lyon (France)
Claude Richard, Institut National des Sciences Appliquées de Lyon (France)


Published in SPIE Proceedings Vol. 8695:
Health Monitoring of Structural and Biological Systems 2013
Tribikram Kundu, Editor(s)

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