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Dike monitoring using fiber sensor-based geosynthetics

  • We report on the development of distributed fiber sensors and their integration into geosynthetics as they are commonly used in the construction of dikes and dams for flood protection. The sensing system uses Stimulated Brillouin Scattering (SBS) in silica optical fibers. Using the Brillouin frequency analysis, the system is capable of detecting changes in both strain and temperature along the optical fibers. The strain experienced by the optical fibers corresponds to the deformation of the geosynthetics in case of a critical soil displacement. To satisfy requirements of dike structures, the system will be optimized to detect soil displacement with a spatial resolution of 5 m or less over a length in the range of 10 km. These rather modest requirements leave space for optimization on resolution of the measurement values, measurement time and cost efficiency. To our knowledge, this is the first distributed fiber sensor using SBS that is especially designed for the monitoring of soilWe report on the development of distributed fiber sensors and their integration into geosynthetics as they are commonly used in the construction of dikes and dams for flood protection. The sensing system uses Stimulated Brillouin Scattering (SBS) in silica optical fibers. Using the Brillouin frequency analysis, the system is capable of detecting changes in both strain and temperature along the optical fibers. The strain experienced by the optical fibers corresponds to the deformation of the geosynthetics in case of a critical soil displacement. To satisfy requirements of dike structures, the system will be optimized to detect soil displacement with a spatial resolution of 5 m or less over a length in the range of 10 km. These rather modest requirements leave space for optimization on resolution of the measurement values, measurement time and cost efficiency. To our knowledge, this is the first distributed fiber sensor using SBS that is especially designed for the monitoring of soil displacement in dikes which is made possible by a novel method for the integration of optical fibers into different types of geosynthetics.zeige mehrzeige weniger

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Autor*innen:Nils Nöther, Aleksander Wosniok, Katerina Krebber, E. Thiele
Persönliche Herausgeber*innen: W. Ostachowicz, J. Holnicki-Szulc, C. Mota Soares
Dokumenttyp:Beitrag zu einem Sammelband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Smart structures and materials : III ECCOMAS thematic conference
Jahr der Erstveröffentlichung:2007
Herausgeber (Institution):The European Community on Computational Methods in Applied Sciences (ECCOMAS)
Verlag:Institute of Fluid-Flow Machinery
Verlagsort:Gda´nsk
Ausgabe/Heft:Paper 03
Erste Seite:1
Letzte Seite:13
Freie Schlagwörter:Dike monitoring; Distributed brillouin sensors; Distributed strain sensors; Fiber optic sensors; Geosynthetics; SBS
Veranstaltung:3. ECCOMAS Thematic Conference on Smart Structures and Materials
Veranstaltungsort:Gdansk, Poland
Beginndatum der Veranstaltung:2007-07-09
Enddatum der Veranstaltung:2007-07-11
ISBN:978-83-88237-03-4
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Ma 273
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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