Research on FBG High Temperature Sensor Used for Strain Monitoring

2013 ◽  
Vol 341-342 ◽  
pp. 851-855
Author(s):  
Yue Ming Liu ◽  
Qing Mu Cai ◽  
Jun Lou
Keyword(s):  
High Temperature ◽  
Strain Gauge ◽  
Power Plants ◽  
Strain Sensor ◽  
Strain Sensing ◽  
High Temperature Alloy ◽  
Oil Companies ◽  
Reliable Performance ◽  
Gauge Structure ◽  
Temperature Strain

Strain sensing is widely used in safety monitoring of high temperature pressure pipes in oil companies and power plants. A novel high-temperature strain sensor was researched based on FBG(Fiber Bragg Grating) and the elastic high-temperature alloy in this paper. First, high-temperature Polyimide fiber FBG was prepared and tested in high temperature chamber. Second, a novel T strain gauge structure of three FBG was designed and fabricated on the elastic high-temperature alloy. This strain gauge could be applied in measurement of two-dimensional high-temperature strain sensing. In the end, a equi-intensity cantilever was adopted to test the high-temperature FBG strain sensor and testing results verified that the T type FBG strain sensor was suitable for high-temperature strain sensing with reliable performance in 300°C environment.

Fabrication of FBG Strain Gauge Used for High Temperature Strain Monitoring

2014 ◽  
Vol 668-669 ◽  
pp. 920-923
Author(s):  
Shao Jun Zhang ◽  
Yue Ming Liu
Keyword(s):  
High Temperature ◽  
Strain Gauge ◽  
Longitudinal Strain ◽  
High Temperature Alloy ◽  
Fbg Sensor ◽  
Strain Monitoring ◽  
Sensing Technology ◽  
Horizontal Strain ◽  
Gauge Structure ◽  
Temperature Strain

Fiber Bragg Grating (FBG) sensing technology is widely used in detection of temperature, strain and etc. Now the application of FBG sensor is limited below 200°C. Application over 200°C is still an engineering challenge since no suitable FBG strain gauge. In this paper, FBG strain gauge structure which consists of three FBGs is designed and fabricated based on the theoretical strain and stress analysis. This strain gauge can be used for the real-time high temperature strain monitoring situation. The elastic high-temperature alloy (10MoWVNb) is chosen as the substrate. The three FBGs with a similar performance are fabricated on the substrate by high-temperature glue. Among the three FBGs, FBG1 is used for the horizontal strain monitoring, FBG2 is used for the longitudinal strain monitoring, and FGB3 is used for high temperature cross-sensitive compensation. The fabricated high temperature FBG gauge is demonstrated suitable for high temperature strain monitoring by experiment.

scholarly journals High temperature strain sensing with alumina ceramic derived fiber based Fabry-Perot interferometer

2019 ◽  
Vol 27 (20) ◽  
pp. 27691 ◽  
Author(s):  
Z. Wang ◽  
H. Liu ◽  
Z. Ma ◽  
Z. Chen ◽  
T. Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Alumina Ceramic ◽  
Strain Sensing ◽  
Fabry Perot ◽  
Temperature Strain

Signal Demodulation of High-Temperature LPFG Strain Sensor Based on Arrayed Waveguide Grating

2014 ◽  
Vol 668-669 ◽  
pp. 1007-1010
Author(s):  
Shao Jun Zhang ◽  
Yue Ming Liu
Keyword(s):  
High Temperature ◽  
Strain Sensor ◽  
Arrayed Waveguide Grating ◽  
Fiber Sensors ◽  
Waveguide Grating ◽  
Reliable Performance ◽  
Signal Demodulation ◽  
Arrayed Waveguide ◽  
Demodulation Method ◽  
Strain Signal

Among all the kinds of optical fiber sensors, FBG and LPFG become the main current owing to its features and advantages. LPFG sensor is especially suitable in high temperature sensing and stimulates more related research interests. The key point of LPFG sensing is the signal demodulation and processing. In this paper, signal demodulation of the LPFG strain sensor was studied based on Arrayed Waveguide Grating. The fabrication method and high temperature performance of this sensor were presented,and a novel strain signal demodulation method was presented based on Arrayed Waveguide Grating (AWG) device by equi-intensity cantilever beam. The experimental results demonstrated that the signal demodulation technology based on AWG has many advantages, such as simple structure, innovative and reliable performance.

High temperature strain sensor based on a fiber Bragg grating and rhombus metal structure

2015 ◽  
Vol 54 (28) ◽  
pp. E109 ◽  
Author(s):  
Liang Zhang ◽  
Yueming Liu ◽  
Xiaoliang Gao ◽  
Zhongcheng Xia
Keyword(s):  
High Temperature ◽  
Fiber Bragg Grating ◽  
Strain Sensor ◽  
Metal Structure ◽  
Bragg Grating ◽  
Temperature Strain

Comparison of Various Means of Attachment of High Temperature Strain Gauge

2015 ◽  
Vol 732 ◽  
pp. 199-202
Author(s):  
Jan Cagáň ◽  
Jindřich Rosa ◽  
Filip Rösler
Keyword(s):  
High Temperature ◽  
Experimental Work ◽  
Strain Gauge ◽  
Commercial Products ◽  
Strain Gauge Measurements ◽  
Temperature Strain

The article deals with problems of high temperature strain gauge measurements. A preliminary experimental work for purpose of mastery of this technique after a longer break has been kicked off in VZLÚ. Initially, possibilities of usage of commercial products and two means of strain gauge attachment were verified.

scholarly journals High-Temperature Strain Sensing Using Sapphire Fibers With Inscribed First-Order Bragg Gratings

2016 ◽  
Vol 8 (3) ◽  
pp. 1-8 ◽  
Author(s):  
T. Habisreuther ◽  
T. Elsmann ◽  
A. Graf ◽  
M. A. Schmidt
Keyword(s):  
High Temperature ◽  
Bragg Gratings ◽  
Strain Sensing ◽  
First Order ◽  
Temperature Strain ◽  
Sapphire Fibers
Sign in / Sign up

Export Citation Format

Share Document