DocumentCode :
930670
Title :
Multifunction fiber optic sensing system for smart applications
Author :
Cusano, Andrea ; Breglio, Giovanni ; Giordano, Michele ; Nicolais, Luigi ; Cutolo, Antonello
Author_Institution :
Dept. of Electron. Eng.-Optoelectronic Div., Univ. of Benevento, Italy
Volume :
9
Issue :
1
fYear :
2004
fDate :
3/1/2004 12:00:00 AM
Firstpage :
40
Lastpage :
49
Abstract :
The end of the twentieth century was witness to the merger of several technological disciplines that could eventually revolutionize engineering design philosophy and lead to the creation of intelligence within otherwise inanimate structures. This new technology will endow a structure with senses and the ability to react to its environment and change its state, shape and geometry. The key point for the practical realization of the so-called smart materials is the availability of robust and reliable structurally integrated sensors able to monitor the state of the structure. To this aim, a fiber optic multiparameter sensing system for process and structural health monitoring in concrete structures is presented. The reflectometric technique has been implemented for refractive-index measurements by using as transducer the fiber end/host interface. Results on the capability of the developed sensor to monitor the curing process of thermoset-based composites are presented. The integration with fiber Bragg gratings (FBGs) with the aim to perform temperature and strain measurements has been discussed. Two low-cost intensity-based demodulation techniques for FBGs interrogation have been developed and tested.
Keywords :
Bragg gratings; curing; fibre optic sensors; intelligent sensors; optical fibres; process monitoring; reflectometry; refractive index measurement; strain sensors; temperature sensors; transducers; fiber Bragg grating; fiber optic sensing system; integrated sensors; intensity-based demodulation technique; multifunction system; process monitoring; reflectometric technique; refractive-index measurement; smart applications; smart materials; strain measurement; structural health monitoring; temperature measurement; thermoset-based composites; transducer; Bragg gratings; Corporate acquisitions; Design engineering; Fiber gratings; Geometrical optics; Intelligent sensors; Intelligent structures; Monitoring; Optical fibers; Shape;
fLanguage :
English
Journal_Title :
Mechatronics, IEEE/ASME Transactions on
Publisher :
ieee
ISSN :
1083-4435
Type :
jour
DOI :
10.1109/TMECH.2004.823872
Filename :
1275477
Link To Document :
بازگشت