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Distributed Brillouin sensing in optical fibers: Soil displacement monitoring using sensor-equipped geogrids

  • This paper reports on the application of distributed Brillouin fiber optic sensing to the monitoring of geotechnical structures. The presented approach to Brillouin sensing offers an alternative to the common pulse-based measurements by using the frequency domain analysis. The focus of the research and field-testing work is to collect reliable structural health monitoring data from large-scale structures while preserving the System’s versatility in terms of being suitable for different application environments (soil structures, foundations, concrete construction works, pipelines etc.) and its robustness in being well functioning in harsh environments. Upon reviewing the presented application test, it is concluded that Brillouin frequency domain based monitoring, when applied to geotechnical structures, is capable of providing accurate strain readings representing deformations of the soil body, and reliable temperature readings for generating temperature profiles of the entireThis paper reports on the application of distributed Brillouin fiber optic sensing to the monitoring of geotechnical structures. The presented approach to Brillouin sensing offers an alternative to the common pulse-based measurements by using the frequency domain analysis. The focus of the research and field-testing work is to collect reliable structural health monitoring data from large-scale structures while preserving the System’s versatility in terms of being suitable for different application environments (soil structures, foundations, concrete construction works, pipelines etc.) and its robustness in being well functioning in harsh environments. Upon reviewing the presented application test, it is concluded that Brillouin frequency domain based monitoring, when applied to geotechnical structures, is capable of providing accurate strain readings representing deformations of the soil body, and reliable temperature readings for generating temperature profiles of the entire structure. An overview of the frequency domain analysis of Brillouin sensing and its digital implementation is given, along with the experiences and insights drawn from an open field test of sensor-equipped geogrid mats.zeige mehrzeige weniger

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Metadaten
Autor*innen:N. Nöther, S. Wang, Aleksander Wosniok, R. Glötzl, J. Schneider-Glötzl
Persönliche Herausgeber*innen:Y. L. Xu, S. Zhu, Y. Xia, Y.Q. Ni, S.S. Law, J. H. Yin, Z.Q. Su
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):SHMII-6 - 6th International conference on structural health monitoring of intelligent infrastructure (Proceedings)
Jahr der Erstveröffentlichung:2013
Herausgeber (Institution):International society for structural health monitoring of intelligent infrastructure
Erste Seite:290
Letzte Seite:295
Freie Schlagwörter:Brillouin sensing; Distributed sensing; Fiber-optic sensing; Sensor-equipped geosynthetics; Strain and temperature measurements; Structural health monitoring
Veranstaltung:SHMII-6 - 6th International conference on structural health monitoring of intelligent infrastructure
Veranstaltungsort:Hong Kong, China
Beginndatum der Veranstaltung:09.12.2013
Enddatum der Veranstaltung:11.12.2013
ISBN:978-962-367-768-4
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:09.01.2014
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