Experimental investigation of a strain gauge sensor based on Fiber Bragg Grating for diameter measurement

2021 ◽  
Vol 61 ◽  
pp. 102428
Author(s):  
Victor H.R. Cardoso ◽  
Paulo Caldas ◽  
M. Thereza R. Giraldi ◽  
Orlando Frazão ◽  
Claudio J. Reis de Carvalho ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Bragg Grating ◽  
Diameter Measurement ◽  
Strain Gauge 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.

Application of optical fiber Bragg grating strain gauge to cable force monitoring of FAST

2015 ◽  
Vol 23 (4) ◽  
pp. 919-925 ◽  
Author(s):  
孙晓 SUN Xiao ◽  
王启明 WANG Qi-ming ◽  
朱明 ZHU Ming ◽  
吴明长 WU Ming-chang
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Bragg Grating ◽  
Cable Force ◽  
Force Monitoring ◽  
Optical Fiber Bragg Grating

Applications of Fiber Bragg Grating in Strain Measurement of Concrete Bridge

2011 ◽  
Vol 368-373 ◽  
pp. 2286-2290
Author(s):  
Xian Xi Tang ◽  
Xian Zhou Tang ◽  
Yue Xu ◽  
Wei Guo
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Strain Measurement ◽  
Fatigue Loading ◽  
Good Effect ◽  
Bragg Grating ◽  
Fiber Grating ◽  
Concrete Bridge ◽  
Experimental Researches

In order to verify the role of fiber bragg grating strain gauge in strain measurement of concrete bridge, and the influence of concrete and steel strain properties by fatigue loading, the relevant experimental researches were carried out. The results indicated that the Fiber Bragg grating strain gauge could reflect the strain regularity of concrete and steel well; for the fiber grating strain rosettes inside the concrete, the pasting equipments of fiber gratings had a certain impact of the measurement effect. The fatigue loading had a certain impact of the properties of concrete and steel, in conditions of the same number of fatigue, the greater the stress amplitude the more obvious the effects. The results analysis shown that, fiber grating strain measurement innovated the means and methods of strain measurement in detailed structure of the concrete bridge, for the strain measurements of concrete bridge under fatigue loading, the FBG could still play very good effect.

Theoretical Simulation and Experimental Investigation of Side-polished Fiber Bragg Grating

2010 ◽  
Vol 39 (s1) ◽  
pp. 54-58
Author(s):  
尹丹 YIN Dan ◽  
杨明红 YANG Ming-hong ◽  
代吉祥 DAI Ji-xiang ◽  
李小兵 LI Xiao-bin ◽  
刘宏亮 LIU Hong-liang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Theoretical Simulation ◽  
Side Polished Fiber

Comparison Analysis of Fiber Bragg Grating and Resistance Strain Gauge Used in Quayside Container Crane Structural Health Monitoring

2013 ◽  
Vol 330 ◽  
pp. 485-493 ◽  
Author(s):  
Xiang Dong Li ◽  
Shi Lin Li ◽  
Shao Long Zhong ◽  
Sen Ge
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Bragg Grating ◽  
Health Monitoring ◽  
Strain Gauge ◽  
Resistance Strain ◽  
Bragg Grating ◽  
Structural Health ◽  
Resistance Strain Gauge ◽  
Container Crane ◽  
Quayside Container Crane

Fiber Bragg grating and resistance strain gauge have been used to test the stress change in key parts of structure of 61t-55m quayside container crane under the same testing conditions. The testing data and stress-time history diagrams obtained by the resistance strain gauge and fiber Bragg grating have been analyzed. The results verify good real-time property and high reliability of the structural health monitoring system based on fiber Bragg grating system.

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