Interrogation of a wavelength tunable fiber Bragg grating sensor based ring laser for dynamic strain monitoring

2010 ◽  
Author(s):  
Oluwaseyi Balogun ◽  
Yinian Zhu ◽  
Sridhar Krishnaswamy
Keyword(s):  
Fiber Bragg Grating ◽  
Ring Laser ◽  
Fiber Bragg Grating Sensor ◽  
Dynamic Strain ◽  
Bragg Grating ◽  
Wavelength Tunable ◽  
Strain Monitoring ◽  
Bragg Grating Sensor

Speed Estimation of a Three Phase Induction Motor Using Stator Dynamic Strain Measurement by Fiber Bragg Grating Sensor based in SVR

2021 ◽  
Author(s):  
Rafael Mancuso Paraiso Cavalcanti ◽  
Jaqueline Bierende ◽  
Beatriz Brusamarello ◽  
Jean Carlos Cardozo Da Silva ◽  
Giovanni Alfredo Guarneri ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Induction Motor ◽  
Strain Measurement ◽  
Fiber Bragg Grating Sensor ◽  
Dynamic Strain ◽  
Bragg Grating ◽  
Speed Estimation ◽  
Three Phase ◽  
Bragg Grating Sensor

Research on Temperature Compensation of the Fiber Bragg Grating Sensor and the Resistance Strain Gauge

2021 ◽  
Vol 16 (6) ◽  
pp. 1020-1027
Author(s):  
Feng Zhu ◽  
Min Liu ◽  
Chengjun Xu ◽  
Sheng Zou ◽  
Chentong Chen ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Temperature Compensation ◽  
Metal Structure ◽  
Resistance Strain ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Resistance Strain Gauge ◽  
Strain Monitoring ◽  
Bragg Grating Sensor

The fiber Bragg grating sensor is widely used in strain monitoring of large metal structure and trend to replace the resistance strain gauge due to its advantages of strong stability, high measurement accuracy, multiple points measuring, strong environmental suitability and long transmission distance. The temperature-induced strain, which can have the same order of magnitudes as the mechanically-induced strain, will cause great errors in the strain monitoring. Therefore, the temperature compensation for the sensors is essential to guarantee the measurement accuracy. The existing theoretical models and experiment platforms for analyzing the temperature compensation are established by assuming that the testing temperature is constant. However, the surrounding temperature of some large metal structure is not stable, and the effect of temperature change cannot be neglected. This paper aims to establish an analytic model and an experiment platform to compare the temperature compensation of the fiber bragg grating sensor and the resistance strain gauge. The superiority of the temperature compensation for the fiber bragg grating sensor is verified. The result provides theoretical support for choosing the fiber bragg grating sensor in the long-time strain monitoring.

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