TY - JOUR
T1 - Development of method for in-service crack detection based on distributed fiber optic sensors
AU - Glisic, Branko
AU - Inaudi, Daniele
N1 - Funding Information:
The test on pipe was supported by the National Science Foundation (NSF) under the NEES Program (grant CMMI-0936493) and performed at the NEES site at Cornell University. Kai Oberste-Ufer from Ruhr University Bochum, Germany, greatly helped installation of sensors and data analysis. 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, as well as the other partners in the project: Radoslaw L. Michalowski and Jerome P. Lynch, University of Michigan, Ann Arbor, MI; Russell A. Green, Virginia Tech, VA; Aaron S. Bradshaw, Merrimack College, North Andover, MA; W. Jason Weiss, Purdue University, West Lafayette, IN; and their students whose help and shared experience significantly contributed to the successful realization of the test. The presented work and Götaälvbron project could never have been realized without the precious help and participation of several persons from several companies. The authors of this article would like particularly to thank Frank Myrvoll, Ralph Omli, Eric Lied, and Per Debloug from the Norwegian Geotechnical Institute (NGI), Norway; Benny Bergstrand, Leif Arvidson, Stefan Pup, Ingvar Larsson, and Jan Tuvert from Trafikkontoret, Sweden; Merit Enckell from the Royal Institute of Technology (KTH), Sweden; and Fabien Briffod, Fabien Ravet, Marc Niklès and André Bals from Omnisens SA, Switzerland. Great thanks to Luigi Bernasconi and Alfred Rüegsegger from 3M–Switzerland; Jens C. Kärger from Gurit, Switzerland; Milan Djurić and Igor Maletin from Minova Bemek, Sweden; Florian Thiele from the Mittweida University of Applied Sciences, Germany; and Daniele Posenato and Riccardo Belli, from SMARTEC SA, Switzerland. The authors would like to thank Mr. David Hubbell for help in improving the quality of this article.
PY - 2012/3
Y1 - 2012/3
N2 - Many bridges worldwide are approaching the end of their lifespan and it is necessary to assess their health condition in order to mitigate risks, prevent disasters, and plan maintenance activities in an optimized manner. Fracture critical bridges are of particular interest since they have only little or no load path redundancy. Structural health monitoring (SHM) has recently emerged as a branch of engineering, which aim is to improve the assessment of structural condition. Distributed optical fiber sensing technology has opened new possibilities in SHM. A distributed deformation sensor (sensing cable) is sensitive at each point of its length to strain changes and cracks. Such a sensor practically monitors a one-dimensional strain field and can be installed over all the length of the monitored structural members, thereby providing with integrity monitoring, i.e. direct detection and characterization (including recognition, localization, and quantification or rating) of local strain changes generated by damage. Integrity monitoring principles are developed and presented in this article. A large scale laboratory test and a real on-site application are briefly presented.
AB - Many bridges worldwide are approaching the end of their lifespan and it is necessary to assess their health condition in order to mitigate risks, prevent disasters, and plan maintenance activities in an optimized manner. Fracture critical bridges are of particular interest since they have only little or no load path redundancy. Structural health monitoring (SHM) has recently emerged as a branch of engineering, which aim is to improve the assessment of structural condition. Distributed optical fiber sensing technology has opened new possibilities in SHM. A distributed deformation sensor (sensing cable) is sensitive at each point of its length to strain changes and cracks. Such a sensor practically monitors a one-dimensional strain field and can be installed over all the length of the monitored structural members, thereby providing with integrity monitoring, i.e. direct detection and characterization (including recognition, localization, and quantification or rating) of local strain changes generated by damage. Integrity monitoring principles are developed and presented in this article. A large scale laboratory test and a real on-site application are briefly presented.
KW - Brillouin scattering
KW - fiber-optic sensors
KW - fracture critical bridges
KW - in-service crack detection
KW - structural health monitoring
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U2 - 10.1177/1475921711414233
DO - 10.1177/1475921711414233
M3 - Article
AN - SCOPUS:84857669703
SN - 1475-9217
VL - 11
SP - 161
EP - 171
JO - Structural Health Monitoring
JF - Structural Health Monitoring
IS - 2
ER -