TY - JOUR
T1 - Damage detection and characterization using long-gauge and distributed fiber optic sensors
AU - Glišić, Branko
AU - Hubbell, David
AU - Sigurdardottir, Dorotea Hoeg
AU - Yao, Yao
N1 - Funding Information:
The Streicker Bridge project has been realized with great help, and kind collaboration of several professionals and companies. We would like to thank Steve Hancock and Turner Construction Company; Ryan Woodward and Ted Zoli, HNTB Corporation; Dong Lee and A.G. Construction Corporation; Steven Mancini and Timothy R. Wintermute, Vollers Excavating & Construction, Inc.; SMARTEC SA, Switzerland; Micron Optics, Inc., Atlanta, GA. In addition, the following personnel, departments, and offices from Princeton University supported and helped realization of the project: Geoffrey Gettelfinger, James P. Wallace, Miles Hersey, Paul Prucnal, Yanhua Deng, Mable Fok; Faculty and staff of Department of Civil and Environmental Engineering and our students: Maryanne Wachter, Jessica Hsu, George Lederman, Kenneth Liew, Chienchuan Chen, Allison Halpern, Morgan Neal, Daniel Reynolds, and Daniel Schiffner. The pipeline project is based upon work supported by the National Science Foundation under Grant No. 0936493 and realized in the frame of the George E. Brown, Jr. Network for Earthquake Engineering Simulation Research (NEESR) Program Solicitation NSF 09-524. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. The method validation testing was performed at the Cornell Large-Scale Lifelines Testing Facility, the NEES site at Cornell University (Cornell NEES Site). The authors would like to acknowledge the personnel of the NEES site and in particular Mr. Tim Bond, manager of operations of the Harry E. Bovay Jr. Civil Infrastructure Laboratory Complex at Cornell University and Mr. Joe Chipalowski, the manager of Cornell’s NEES Equipment Site. This research has been awarded as a payload of NEESR Award CMMI-0724022. The latter hosted this research and the authors would like to thank all collaborators from the NEESR Award for their precious help. The sensors, the reading unit, and the associated software were provided by SMARTEC SA, Switzerland at significantly reduced costs. Graduate student Kai Oberste-Ufer from Ruhr-University Bochum, Germany was involved in, and contributed significantly to the success of the validation tests.
PY - 2013
Y1 - 2013
N2 - Fiber optic strain sensors have significantly evolved and have reached their market maturity during the last decade. Their widely recognized advantages are high precision, long-term stability, and durability. In addition to these benefits, fiber optic (FO) techniques allow for affordable instrumentation of large areas of civil structures and infrastructure enabling global large-scale monitoring based on long-gauge sensors, and integrity monitoring based on distributed sensors. The FO techniques that enable these two approaches are based on fiber Bragg-gratings and Brillouin optical time-domain analysis. The aim of this paper is to present both FO techniques and both structural assessment approaches, and to validate them through large-scale applications. Although many other currently applied methods fail to detect the damage in real, on-site conditions, the presented approaches were proven to be suitable for damage detection and characterization, i.e., damage localization and, to certain extent, quantification. This is illustrated by two applications presented in detail in this paper: the first on a post-tensioned concrete bridge and the second on segmented concrete pipeline.
AB - Fiber optic strain sensors have significantly evolved and have reached their market maturity during the last decade. Their widely recognized advantages are high precision, long-term stability, and durability. In addition to these benefits, fiber optic (FO) techniques allow for affordable instrumentation of large areas of civil structures and infrastructure enabling global large-scale monitoring based on long-gauge sensors, and integrity monitoring based on distributed sensors. The FO techniques that enable these two approaches are based on fiber Bragg-gratings and Brillouin optical time-domain analysis. The aim of this paper is to present both FO techniques and both structural assessment approaches, and to validate them through large-scale applications. Although many other currently applied methods fail to detect the damage in real, on-site conditions, the presented approaches were proven to be suitable for damage detection and characterization, i.e., damage localization and, to certain extent, quantification. This is illustrated by two applications presented in detail in this paper: the first on a post-tensioned concrete bridge and the second on segmented concrete pipeline.
KW - Bragg-grating
KW - Bridge
KW - Distributed sensors
KW - Long-gauge sensors
KW - Pipeline
KW - Stimulated Brillouin scattering
KW - Structural health monitoring
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U2 - 10.1117/1.OE.52.8.087101
DO - 10.1117/1.OE.52.8.087101
M3 - Article
AN - SCOPUS:84885934339
SN - 0091-3286
VL - 52
JO - Optical Engineering
JF - Optical Engineering
IS - 8
M1 - 087101
ER -