Measurement of strains by optical fiber Bragg grating sensors embedded into polymer composite material

2017 ◽  
Vol 25 (3) ◽  
pp. e2118 ◽  
Author(s):  
V.P. Matveenko ◽  
I.N. Shardakov ◽  
A.A. Voronkov ◽  
N.A. Kosheleva ◽  
D.S. Lobanov ◽  
...  
Keyword(s):  
Composite Material ◽  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Polymer Composite ◽  
Polymer Composite Material ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
Optical Fiber Bragg Grating

scholarly journals Analysis of Reliability of Strain Measurements Made with the Fiber Bragg Grating Sensor Rosettes Embedded in a Polymer Composite Material

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5050
Author(s):  
Valerii Matveenko ◽  
Natalia Kosheleva ◽  
Grigorii Serovaev ◽  
Andrey Fedorov
Keyword(s):  
Composite Material ◽  
Stress State ◽  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Polymer Composite ◽  
Optical Spectrum ◽  
Uniaxial Stress ◽  
Polymer Composite Material ◽  
Bragg Grating ◽  
Two Peaks

The results of strain measuring experiments, with the help of rosettes consisting of fiber Bragg grating sensors (FBG) embedded at the manufacturing stage in a polymer composite material are considered in this paper. The samples were made by the direct pressing method from fiberglass prepregs. A cross-shaped sample was tested under loading conditions corresponding to a complex stress state. A variant of strain calculations based on experimental data is discussed. The calculations were performed under the assumption of a uniaxial stress state in an optical fiber embedded in the material. The obtained results provide a reasonable explanation of the absence in the conducted experiment of two peaks in the reflected optical spectrum, the presence of which follows from the known theoretical principles. The experimental result with two peaks in the reflected optical spectrum was obtained for the same sample under a different loading scheme. The proposed variant of the numerical model of the experiment and the results of numerical simulation made for FBG rosettes embedded in the material allowed to estimate error in the strain values calculated on the assumption of the uniaxial stress state in the optical fiber and in the presence of two peaks in the reflected optical spectrum.

scholarly journals Insole optical fiber Bragg grating sensors network for dynamic vertical force monitoring

2017 ◽  
Vol 22 (9) ◽  
pp. 091507 ◽  
Author(s):  
Maria Fátima Domingues ◽  
Cátia Tavares ◽  
Cátia Leitão ◽  
Anselmo Frizera-Neto ◽  
Nélia Alberto ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Vertical Force ◽  
Fiber Bragg Grating Sensors ◽  
Force Monitoring ◽  
Optical Fiber Bragg Grating

scholarly journals Exoskeletal Force-Sensing End-Effectors With Embedded Optical Fiber-Bragg-Grating Sensors

2009 ◽  
Vol 25 (6) ◽  
pp. 1319-1331 ◽  
Author(s):  
Yong-Lae Park ◽  
Seok Chang Ryu ◽  
R.J. Black ◽  
K.K. Chau ◽  
B. Moslehi ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Force Sensing ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
End Effectors ◽  
Optical Fiber Bragg Grating
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