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

A novel Fiber Bragg grating strain sensor based on rhombus structure at high temperature

2014 ◽  
Author(s):  
Xiaoliang Gao ◽  
Yueming Liu ◽  
Zhongcheng Xia ◽  
Zhangcheng Yang
Keyword(s):  
High Temperature ◽  
Fiber Bragg Grating ◽  
Strain Sensor ◽  
Bragg Grating

Response Characteristics of Pure-Quartz-Core Fiber Bragg Grating Under High Temperature Strain

2017 ◽  
Vol 44 (11) ◽  
pp. 1106003
Author(s):  
丁旭东 Ding Xudong ◽  
张钰民 Zhang Yumin ◽  
宋言明 Song Yanming ◽  
杨润涛 Yang Runtao ◽  
祝连庆 Zhu Lianqing
Keyword(s):  
High Temperature ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Response Characteristics ◽  
Core Fiber ◽  
Quartz Core ◽  
Temperature Strain

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.

Early-Age Autogenous Shrinkage of High-Performance Concrete Columns by Embedded Fiber Bragg-Grating Sensor

2009 ◽  
Vol 419-420 ◽  
pp. 1-4 ◽  
Author(s):  
Ying Wei Yun ◽  
Ii Young Jang ◽  
Seong Kyum Kim ◽  
Seung Min Park
Keyword(s):  
Fiber Bragg Grating ◽  
High Performance ◽  
High Performance Concrete ◽  
Construction Material ◽  
Autogenous Shrinkage ◽  
Strain Sensor ◽  
Bragg Grating ◽  
Early Age ◽  
Long Time ◽  
Sensor Temperature

High-performance concrete (HPC) as a promising construction material has been widely used in infrastructures and high-rise buildings etc. However, its pretty high autogenous shrinkage (AS) especially in its early age becomes one of the key problems endangering long-time durability of HPC structures. This paper carried out the early age AS research of large scaled HPC column specimens by embedded Fiber Bragg-Grating (FBG) strain sensor. Temperature compensation for FBG strain sensor by thermocouple was also attempted in this paper, and the results were reasonable and acceptable comparing with the result compensated by FBG temperature sensor. Reinforcement influence, size effect and temperature effect on HPC AS were also analyzed respectively in this paper.

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