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- 2008 (6) (entfernen)
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Referierte Publikation
- nein (6)
Schlagworte
- Dike monitoring (3)
- BOFDA (2)
- Brillouin scattering (2)
- Brillouin sensing (2)
- Distributed sensors (2)
- Distributed strain measurement (2)
- Sensor-based geotextiles (2)
- Distributed Brillouin sensor (1)
- Fiber optic sensor (1)
- Fiber optic sensors (1)
Eingeladener Vortrag
- nein (2)
We report on the development of a complete system for spatially resolved detection of critical soil displacement in river embankments. The system uses Brillouin frequency domain analysis (BOFDA) for distributed measurement of strain in silica optical fibers. Our development consists of the measurement unit, an adequate coating for the optical fibers and a technique to integrate the coated optical fibers into geotextiles as they are commonly used in dike construction. We present several laboratory and field tests that prove the capability of the system to detect areas of soil displacement as small as 2 meters. These are the first tests of truly distributed strain measurements on optical fibers embedded into geosynthetics.