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Proceedings Paper

Finite element model updating of a space frame bridge with mobile sensing data
Author(s): Dapeng Zhu; Chia-Hung Fang; Chunhee Cho; Jiajie Guo; Yang Wang; Kok-Meng Lee
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Paper Abstract

This research investigates the field performance of a mobile sensor network designed for structural health monitoring. Each mobile sensing node (MSN) is a small magnet-wheeled tetherless robot that carries sensors and autonomously navigates on a steel structure. A four-node mobile sensor network is deployed for navigating on the top plane of a space frame bridge. With little human effort, the MSNs navigate to different sections of the steel bridge, attach accelerometers, and measure structural vibrations at high spatial resolution. Using high-resolution data collected by a small number of MSNs, detailed modal characteristics of the bridge are identified. A finite element model for the bridge is constructed according to structural drawings, and updated using modal characteristics extracted from mobile sensing data.

Paper Details

Date Published: 3 April 2012
PDF: 9 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 834513 (3 April 2012); doi: 10.1117/12.914942
Show Author Affiliations
Dapeng Zhu, Georgia Institute of Technology (United States)
Chia-Hung Fang, Georgia Institute of Technology (United States)
Chunhee Cho, Georgia Institute of Technology (United States)
Jiajie Guo, Georgia Institute of Technology (United States)
Yang Wang, Georgia Institute of Technology (United States)
Kok-Meng Lee, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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