High-strain monitoring in composite-wrapped concrete cylinders using embedded fiber Bragg grating arrays

1996 ◽  
Author(s):  
Michael A. Davis ◽  
David G. Bellemore ◽  
Martin A. Putnam ◽  
Alan D. Kersey ◽  
Kerry T. Slattery ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Strain ◽  
Bragg Grating ◽  
Strain Monitoring ◽  
Concrete Cylinders

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.

Temperature decoupling and high strain sensitivity fiber Bragg grating sensor

2018 ◽  
Vol 26 (6) ◽  
pp. 1330-1337 ◽  
Author(s):  
张开宇 ZHANG Kai-yu ◽  
闫 光 YAN Guang ◽  
孟凡勇 MENG Fan-yong ◽  
祝连庆 ZHU Lian-qing
Keyword(s):  
Fiber Bragg Grating ◽  
High Strain ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Strain Sensitivity ◽  
Bragg Grating Sensor

An Investigation of Optical-Mechanical Transfer of Surface-Bonded Fiber Bragg Grating Sensors for Aerostat Envelope Strain Monitoring

2013 ◽  
Vol 11 (5) ◽  
pp. 812-819 ◽  
Author(s):  
Q. B. Wang ◽  
H. T. Zhao ◽  
Y. Qiu ◽  
J. A. Chen ◽  
Y. Y. Wang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
Strain Monitoring

Strain monitoring of railway based on fiber Bragg grating sensors

2013 ◽  
Author(s):  
Pengfei Wang ◽  
Dawei He ◽  
Yongsheng Wang ◽  
Tao Wang ◽  
Yu Quan ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
Strain Monitoring

Feasibility of Structural Health Monitoring of High Strain Rate Events Using Fiber Bragg Grating Sensors

2012 ◽  
Author(s):  
James Ayers ◽  
Tusit Weerasooriya ◽  
Anindya Ghoshal ◽  
Collin Pecora ◽  
Allan Gunnarsson ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Fiber Bragg Grating ◽  
High Strain ◽  
Surface Strain ◽  
Back Surface ◽  
Bragg Grating ◽  
Full Field ◽  
Fbg Sensors ◽  
Strain Rate Loading

Strategically located Fiber Bragg Grating (FBG) Sensors have been proposed as an in situ method to increase the signal to noise ratio (SNR) for metallic and composite components. This paper presents a systematic study that investigates the viability of FBG Sensors under high strain rate loading by initially measuring 1D-strains in a compression Hopkinson bar experiment, followed by 2D full-field strain-tensor in impact and blast experiments on plates. Specifically, high strain rates from commercialized FBG Sensors are compared to traditional resistive and semi-conductor based strain gages under various levels of 1D high strain rate loading. In the projectile-plate impact experiments, full-field back-surface strain measured using FBG Sensor arrays are compared with that measured from 3D surface Digital Image Correlation (3D-sDIC) strain measuring technique. Finally, strains in welded steel plates subjected to high explosive discharge are monitored with mounted FBG Sensors on the back surface. From this study, potential improvements in the SNR of FBG Sensors are recommended, and the survivability of these sensors under more complex, dynamic loading is evaluated.

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