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This paper describes the design, commissioning, and evaluation of a fiber-optic strain sensor system for the structural health monitoring of a prestressed concrete posttensioned box girder railway bridge in Mumbai, India, which shows a number of well-documented structural problems. Preliminary laboratory trials to design the most appropriate sensor system that could be readily transported and used...
Fiber-optic strain sensors have been used to qualitatively assess structure health. Here, use of fiber-optic strain sensors for quantitative measurement of concrete strain on a railway bridge is investigated. Concrete strains have historically been measured using electrical resistance strain gages. These strain gages, however, have the disadvantages of low signal-noise ratio and degradation of signal...
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