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- Title
Monitoring structures using long gauge length fibre optic sensors.
- Authors
Tennyson, R. C.; Banthia, N.; Rivera, E.; Huffman, S.; Sturrock, I.
- Abstract
Long gauge length fibre optic sensors have been installed on bridges and pipelines to monitor their long-term structural integrity. These sensors measure the average displacement or strain over their gauge length due to mechanical or thermal loading. It is shown that long gauge length sensors can provide an estimate of the maximum bending strain for beam-type structures, such as bridge girders or pipelines, subject to sag. Bending and hoop strain test results are presented for bridges with composite reinforcements bonded to concrete girders and columns that were statically loaded at various locations to assess the integrity of the bond interface. These sensors can also provide information on corrosion-induced wall thinning of pipelines based on changes in the local strain field due to internal pressure in the line. Test data are presented for measuring pipeline corrosion using different fibre optic sensor configurations.
- Subjects
STRUCTURAL engineering; OPTICAL fiber detectors; BRIDGES; BENDING stresses; STRAINS &; stresses (Mechanics); COMPOSITE-reinforced concrete; PIPELINE corrosion
- Publication
Canadian Journal of Civil Engineering, 2007, Vol 34, Issue 3, p422
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/L06-155