Share Email Print
cover

Proceedings Paper

Evaluating vehicular-induced bridge vibrations for energy harvesting applications
Author(s): Matthew Reichenbach; Jeremiah Fasl; Vasilis A. Samaras; Sharon Wood; Todd Helwig; Richard Lindenberg
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Highway bridges are vital links in the transportation network in the United States. Identifying possible safety problems in the approximately 600,000 bridges across the country is generally accomplished through labor-intensive, visual inspections. Ongoing research sponsored by NIST seeks to improve inspection practices by providing real-time, continuous monitoring technology for steel bridges. A wireless sensor network with a service life of ten years that is powered by an integrated energy harvester is targeted. In order to achieve the target ten-year life for the monitoring system, novel approaches to energy harvesting for use in recharging batteries are investigated. Three main sources of energy are evaluated: (a) vibrational energy, (b) solar energy, and (c) wind energy. Assessing the energy produced from vehicular-induced vibrations and converted through electromagnetic induction is the focus of this paper. The goal of the study is to process acceleration data and analyze the vibrational response of steel bridges to moving truck loads. Through spectral analysis and harvester modeling, the feasibility of vibration-based energy harvesting for longterm monitoring can be assessed. The effects of bridge conditions, ambient temperature, truck traffic patterns, and harvester position on the power content of the vibrations are investigated. With sensor nodes continually recharged, the proposed real-time monitoring system will operate off the power grid, thus reducing life cycle costs and enhancing inspection practices for state DOTs. This paper will present the results of estimating the vibration energy of a steel bridge in Texas.

Paper Details

Date Published: 4 April 2012
PDF: 13 pages
Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 83472E (4 April 2012); doi: 10.1117/12.914981
Show Author Affiliations
Matthew Reichenbach, The Univ. of Texas at Austin (United States)
Jeremiah Fasl, The Univ. of Texas at Austin (United States)
Vasilis A. Samaras, The Univ. of Texas at Austin (United States)
Sharon Wood, The Univ. of Texas at Austin (United States)
Todd Helwig, The Univ. of Texas at Austin (United States)
Richard Lindenberg, Wiss, Janney, Elstner Associates, Inc. (United States)


Published in SPIE Proceedings Vol. 8347:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012
Andrew L. Gyekenyesi, Editor(s)

© SPIE. Terms of Use
Back to Top