scholarly journals Performance evaluation of fiber Bragg gratings at elevated temperatures

2004 ◽  
Author(s):  
Jeffrey Juergens ◽  
Grigory Adamovsky ◽  
Bertram Floyd
Keyword(s):  
Performance Evaluation ◽  
Elevated Temperatures ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings

MEASUREMENT OF STRAINS IN CARBON-REINFORCED POLYMER COMPOSITE PRODUCTS AT ELEVATED TEMPERATURES USING FIBER-OPTIC SENSORS

2019 ◽  
pp. 14-19
Author(s):  
O. N. Budadin ◽  
W. Yu. Kutyurin ◽  
A. N. Rykov ◽  
P. I. Gnusin
Keyword(s):  
Elevated Temperatures ◽  
Fiber Optic ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Optic Sensors ◽  
Effect Of Temperature ◽  
Main Task ◽  
Reinforced Polymer ◽  
Different Temperatures ◽  
Quantitative Results

The main task of the contribution was the estimation of the possibility of using Fiber Bragg Gratings as a mean of measuring the deformation in standard carbon fiber samples at elevated temperatures. The article presents the results of experiments on the measurement of deformations in a carbon sample using Fiber Bragg Gratings on an optical fiber. Deformations were measured in the process of stretching the sample at different temperatures (range from 20 to 140 °C). It is shown that FBGs integrated into the sample material give more stable, reproducible readings, unlike to inlay on the outer surface. It has been established that the use of several FBGs with different sensitivity to temperature or deformation (created by mechanically decoupling the sensor from the sample) makes it possible to compensate the effect of temperature when measuring deformations. The quantitative results of measurements are provided.

Fatigue crack growth monitoring at elevated temperatures using multiplexed Fiber Bragg Gratings

2009 ◽  
Author(s):  
Richard J. Black ◽  
David J. Zare ◽  
Levy Oblea ◽  
Behzad M. Moslehi ◽  
Shamachary Sathish ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Elevated Temperatures ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Growth Monitoring

Single-pulse fiber Bragg gratings and specific coatings for use at elevated temperatures

2007 ◽  
Vol 46 (17) ◽  
pp. 3417 ◽  
Author(s):  
Hartmut Bartelt ◽  
Kay Schuster ◽  
Sonja Unger ◽  
Christoph Chojetzki ◽  
Manfred Rothhardt ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Fiber Bragg Gratings ◽  
Single Pulse ◽  
Bragg Gratings

Fabrication of superimposed fiber Bragg gratings and applications in fiber laser oscillators

Optik ◽  
2020 ◽  
Vol 214 ◽  
pp. 164583
Author(s):  
Qihao Hu ◽  
Pengrui Wang ◽  
Meng Wang ◽  
Zefeng Wang
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Laser Oscillators

Wavelength tunable fiber Bragg gratings fabricated by stress annealing assisted femtosecond laser direct writing

2021 ◽  
Vol 61 ◽  
pp. 102427
Author(s):  
Xiaoyan Sun ◽  
Zikun Chang ◽  
Li Zeng ◽  
Xinran Dong ◽  
Youwang Hu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Wavelength Tunable
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