
Proceedings Paper
Performance assessment of a fiber Bragg grating sensor network inside a hydro power dam using optical backscatter reflectometryFormat | Member Price | Non-Member Price |
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Paper Abstract
In recent years, many hydro power plants were modified to pump storage operation. This changes the loading conditions and new monitoring concepts are required. We developed a fiber Bragg grating based monitoring system which was installed inside a hydro power dam in 2013. This paper reports on detailed investigations of this network using an optical backscatter reflectometer, which allows distributed strain sensing with a very high spatial resolution up to millimeters. Therefore, an analysis of the strain profile between two anchoring points of a FBG sensor can be performed. In addition to distributed sensing, the different wavelengths of the FBGs are determined in the frequency domain to verify the results of a classical FBG interrogator. These comparisons and further laboratory studies prove the suitability of the fiber optic system and demonstrate that a detailed analysis of FBG networks using optical backscatter reflectometry can provide valuable insights.
Paper Details
Date Published: 27 April 2017
PDF: 12 pages
Proc. SPIE 10208, Fiber Optic Sensors and Applications XIV, 102080R (27 April 2017); doi: 10.1117/12.2262410
Published in SPIE Proceedings Vol. 10208:
Fiber Optic Sensors and Applications XIV
Christopher S. Baldwin; Gary Pickrell; Henry H. Du, Editor(s)
PDF: 12 pages
Proc. SPIE 10208, Fiber Optic Sensors and Applications XIV, 102080R (27 April 2017); doi: 10.1117/12.2262410
Show Author Affiliations
Christoph Monsberger, Graz Univ. of Technology (Austria)
Ferdinand Klug, Graz Univ. of Technology (Austria)
Ferdinand Klug, Graz Univ. of Technology (Austria)
Werner Lienhart, Technische Univ. Graz (Austria)
Published in SPIE Proceedings Vol. 10208:
Fiber Optic Sensors and Applications XIV
Christopher S. Baldwin; Gary Pickrell; Henry H. Du, Editor(s)
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