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Identifying impacts using adaptive fiber bragg grating demodulator for structural health monitoring applications
Fiber Bragg grating (FBG) sensors have been developed for a variety of applications including optical remote sensing of strain, temperature, and pressure. These sensors offer special advantages: they are light-weight, resistant to corrosion, immune to electromagnetic interference, and can be multiplexed thus allowing for the simultaneous measurement of strain, temperature and pressure at multiple locations. Several applications of FBG sensors in health monitoring of structures have been reported in the literature. For health monitoring of civil infrastructure, several FBG sensors have been bonded on bridge structures to monitor changes in strain. A network of Fiber-Bragg Grating (FBG) sensors is developed as part of a Structural Health Monitoring system to identify impact damage. The sensor signals are adaptively demodulated using two-wave mixing (TWM) technology. The signals from multiple FBG sensors are multiplexed into a single TWM demodulator. The FBG sensor network is mounted on a plate, and the structure is subjected to impacts generated by dropping small ball bearings. Impact locations are identified based on time frequency analysis.
Identifying impacts using adaptive fiber bragg grating demodulator for structural health monitoring applications
Fiber Bragg grating (FBG) sensors have been developed for a variety of applications including optical remote sensing of strain, temperature, and pressure. These sensors offer special advantages: they are light-weight, resistant to corrosion, immune to electromagnetic interference, and can be multiplexed thus allowing for the simultaneous measurement of strain, temperature and pressure at multiple locations. Several applications of FBG sensors in health monitoring of structures have been reported in the literature. For health monitoring of civil infrastructure, several FBG sensors have been bonded on bridge structures to monitor changes in strain. A network of Fiber-Bragg Grating (FBG) sensors is developed as part of a Structural Health Monitoring system to identify impact damage. The sensor signals are adaptively demodulated using two-wave mixing (TWM) technology. The signals from multiple FBG sensors are multiplexed into a single TWM demodulator. The FBG sensor network is mounted on a plate, and the structure is subjected to impacts generated by dropping small ball bearings. Impact locations are identified based on time frequency analysis.
Identifying impacts using adaptive fiber bragg grating demodulator for structural health monitoring applications
Identifizierung von Stößen mittels adaptiver Faser-Bragg-Gitter-Demodulatoren zur Anwendung auf die Überwachung der baulichen Unversehrtheit
Kirikera, G.R. (author) / Balogun, O. (author) / Krishnaswamy, S. (author)
2008
7 Seiten, 6 Bilder, 11 Quellen
Conference paper
Storage medium
English
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