Title :
High-speed structural monitoring using a Fiber Bragg Grating sensor system
Author :
Cheng, L.K. ; Oostdijck, B.W.
Author_Institution :
TNO Inst. of Appl. Phys., Delft, Netherlands
Abstract :
We have developed a new interrogation/demultiplexing system for Fiber Bragg Grating (FBG) sensor array. Our approach combines a high readout frequency for all the FBG sensor channels with absolute measurement. This combination is in particular of interest for the detection of dynamic loading, which is the main cause of hair cracks development in metal structure. A demonstrator of this system with the multi input fibers configuration has been built. Several vibration and shock wave experiments are carried out.
Keywords :
Bragg gratings; demultiplexing; fibre optic sensors; high-speed optical techniques; monitoring; shock measurement; vibration measurement; demonstrator; dynamic loading; fiber Bragg grating sensor array; high-speed structural monitoring; interrogation/demultiplexing system; multi-line configuration; shock wave measurement; vibration measurement; Bragg gratings; Demultiplexing; Fiber gratings; Frequency measurement; Hair; Monitoring; Optical fiber sensors; Sensor arrays; Sensor systems; Shock waves;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000540
