scholarly journals Field monitoring of static, dynamic, and statnamic pile loading tests using fibre Bragg grating strain sensors

2009 ◽  
Author(s):  
Jin Li ◽  
Ricardo P. Correia ◽  
Edmon Chehura ◽  
Stephen Staines ◽  
Stephen W. James ◽  
...  
Keyword(s):  
Field Monitoring ◽  
Strain Sensors ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Loading Tests

scholarly journals Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3115 ◽  
Author(s):  
Carlo Campanella ◽  
Antonello Cuccovillo ◽  
Clarissa Campanella ◽  
Abdulkadir Yurt ◽  
Vittorio Passaro
Keyword(s):  
Research Field ◽  
Strain Sensors ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Mode Splitting ◽  
Key Sectors ◽  
Low Costs ◽  
And Performance ◽  
Physical Principles ◽  
Advanced Applications

Fibre Bragg grating (FBG) strain sensors are not only a very well-established research field, but they are also acquiring a bigger market share due to their sensitivity and low costs. In this paper we review FBG strain sensors with high focus on the underlying physical principles, the interrogation, and the read-out techniques. Particular emphasis is given to recent advances in highly-performing, single head FBG, a category FBG strain sensors belong to. Different sensing schemes are described, including FBG strain sensors based on mode splitting. Their operation principle and performance are reported and compared with the conventional architectures. In conclusion, some advanced applications and key sectors the global fibre-optic strain sensors market are envisaged, as well as the main market players acting in this field.

Demultiplexing of fibre Bragg grating temperature and strain sensors

1994 ◽  
Vol 111 (1-2) ◽  
pp. 51-54 ◽  
Author(s):  
G.P. Brady ◽  
S. Hope ◽  
A.B.Lobo Ribeiro ◽  
D.J. Webb ◽  
L. Reekie ◽  
...  
Keyword(s):  
Strain Sensors ◽  
Bragg Grating ◽  
Fibre Bragg Grating

High Strain Monitoring during Fatigue Loading of Thermoplastic Composites Using Imbedded Draw Tower Fibre Bragg Grating Sensors

2008 ◽  
Vol 56 ◽  
pp. 441-446 ◽  
Author(s):  
Eli Voet ◽  
Geert Luyckx ◽  
Ives De Baere ◽  
Joris Degrieck ◽  
J. Vlekken ◽  
...  
Keyword(s):  
Composite Laminates ◽  
High Strength ◽  
Fatigue Loading ◽  
Strain Sensors ◽  
Thermoplastic Composites ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Strain Measurements ◽  
Strain Monitoring

This paper presents the experimental study of fibre Bragg grating sensors for measuring strain inside composite laminates during fatigue loading. The optical fibres are imbedded inside thermoplastic CFRP test-coupons which have an ultimate strain of about 1.1%. Tension – tension fatigue cycling at a rate of 5Hz is been carried out at 314MPa with a maximum strain of 0.51%. At such extreme strain levels the use of high strength sensors becomes inevitable. Neither the sensor nor the composite test-coupons showed any significant degradation even after more than 500000 cycles. Fibre optic Bragg grating sensors are known to be very accurate strain sensors but one should be very careful interpreting their response once they are imbedded inside composite materials. In this study high strength fibre Bragg grating sensors with coating are imbedded in composite test coupons and a pretty good correlation was found between the strain measurements of an electrical extensometer and the imbedded sensor during the complete cycling. The high strength sensor show to be very feasible for extreme and long term strain measurements.

Integration of fibre Bragg grating strain sensors into composite electrical insulators

2004 ◽  
Author(s):  
Alain Trouillet ◽  
Damien Lepley ◽  
Alain Mure-Ravaud ◽  
Emmanuel Marin
Keyword(s):  
Strain Sensors ◽  
Bragg Grating ◽  
Fibre Bragg Grating
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