A suite of optical fibre sensors for structural condition monitoring

2015 ◽  
Author(s):  
T. Sun ◽  
K. T. V. Grattan ◽  
J. Carlton
Keyword(s):  
Condition Monitoring ◽  
Optical Fibre ◽  
Structural Condition ◽  
Optical Fibre Sensors

scholarly journals Assessment and visualization of performance indicators of reinforced concrete beams by distributed optical fibre sensing

2021 ◽  
pp. 147592172098443
Author(s):  
Carlos G Berrocal ◽  
Ignasi Fernandez ◽  
Mattia Francesco Bado ◽  
Joan R Casas ◽  
Rasmus Rempling
Keyword(s):  
Reinforced Concrete ◽  
Optical Fibre ◽  
Performance Indicators ◽  
Concrete Beams ◽  
Structural Condition ◽  
Reinforced Concrete Beams ◽  
Image Correlation ◽  
Engineering Structures ◽  
Optical Fibre Sensors ◽  
Resilient Infrastructure

The implementation of structural health monitoring systems in civil engineering structures already in the construction phase could contribute to safer and more resilient infrastructure. Due to their lightweight, small size and high resistance to the environment, distributed optical fibre sensors stand out as a very promising technology for damage detection and quantification in reinforced concrete structures. In this article, the suitability of embedding robust distributed optical fibre sensors featuring a protective sheath to accurately assess the performance indicators, in terms of vertical deflection and crack width, of three reinforced concrete beams subjected to four-point bending is investigated. The results revealed that a certain strain attenuation occurs in embedded robust distributed optical fibre sensors compared to commonly used thin polyimide-coated distributed optical fibre sensors bonded to steel reinforcement bars. However, the presence of the protective sheath prevented the appearance of strain reading anomalies which has been a frequently reported issue. Performance wise, the robust distributed optical fibre sensors were able to provide a good estimate of the beam deflections with errors of between 12.3% and 6.5%. Similarly, crack widths computed based on distributed optical fibre sensor strain measurements differed by as little as ±20 µm with results from digital image correlation, provided individual cracks could be successfully detected in the strain profiles. Finally, a post-processing procedure is presented to generate intuitive contour plots that can help delivering critical information about the element’s structural condition in a clear and straightforward manner.

Optical Fibre Sensors for Remote Condition Monitoring of Industrial Structures

2017 ◽  
pp. 1-24
Author(s):  
T. Sun ◽  
M. Fabian ◽  
Y. Chen ◽  
M. Vidakovic ◽  
S. Javdani ◽  
...  
Keyword(s):  
Condition Monitoring ◽  
Optical Fibre ◽  
Industrial Structures ◽  
Optical Fibre Sensors

Optical Fibre Sensors 18 (OFS-18)

2007 ◽  
Vol 18 (10) ◽  
Author(s):  
Julian D C Jones ◽  
Ralph P Tatam
Keyword(s):  
Optical Fibre ◽  
Optical Fibre Sensors

scholarly journals France’s State of the Art Distributed Optical Fibre Sensors Qualified for the Monitoring of the French Underground Repository for High Level and Intermediate Level Long Lived Radioactive Wastes

Sensors ◽  
2017 ◽  
Vol 17 (6) ◽  
pp. 1377 ◽  
Author(s):  
Sylvie Delepine-Lesoille ◽  
Sylvain Girard ◽  
Marcel Landolt ◽  
Johan Bertrand ◽  
Isabelle Planes ◽  
...  
Keyword(s):  
Optical Fibre ◽  
State Of The Art ◽  
Radioactive Wastes ◽  
Intermediate Level ◽  
Optical Fibre Sensors ◽  
High Level

Multiple microbending optical-fibre sensors for measurement of fuel quantity in aircraft fuel tanks

1998 ◽  
Vol 68 (1-3) ◽  
pp. 320-323 ◽  
Author(s):  
S.F. Knowles ◽  
B.E. Jones ◽  
S. Purdy ◽  
C.M. France
Keyword(s):  
Optical Fibre ◽  
Optical Fibre Sensors ◽  
Aircraft Fuel ◽  
Fuel Tanks
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