Optical fiber sensing of corroded materials using optical fibers as remote probes

2013 ◽  
Author(s):  
Juock Namkung ◽  
Paul Kulowitch ◽  
Andy Schwartz
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Fiber Sensing ◽  
Optical Fiber Sensing

Smart Structure Based on Continuous Optical Fiber Sensing Technique (Review)

2011 ◽  
Vol 71-78 ◽  
pp. 4138-4141
Author(s):  
Wen Cheng Jin ◽  
Juan Wan ◽  
Qing Rong Ding ◽  
Chang Dong Zhou
Keyword(s):  
Optical Fiber ◽  
High Precision ◽  
Optical Fibers ◽  
Electromagnetic Interference ◽  
Signal Analysis ◽  
Continuous Measurement ◽  
Smart Structure ◽  
Fiber Sensing ◽  
Key Technologies ◽  
Optical Fiber Sensing

Continuous optical fiber sensing technique has the advantages of continuous measurement, corrosion preventing, anti-electromagnetic interference and high precision. This paper integrates continuous optical fiber into smart structure system. It combines the advantages of continuous optical fibers with self-adapting function of smart structures. It may have wide uses in engineering. But it is developing. It has some key technologies to be solved, such as the manufacture and embedment technique of special optical fibers, optimized arrangements of fibers, smart identification of the signal, analysis processing for enormous data and realization of self-adapting function.

Optical-Fiber Sensors: An Overview

MRS Bulletin ◽  
2002 ◽  
Vol 27 (5) ◽  
pp. 365-369 ◽  
Author(s):  
D. J. Webb
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Material Characterization ◽  
Chemical Sensing ◽  
Optical Fiber Sensors ◽  
Bragg Grating ◽  
Fiber Sensors ◽  
Fiber Sensing ◽  
Recent Developments ◽  
Optical Fiber Sensing

AbstractThis article provides an overview of the field of optical-fiber sensing, including a brief introduction to the properties of optical fibers that make them suitable for material characterization and monitoring. Some of the recent developments in the field are described, with an emphasis on Bragg grating sensors, multiplexed systems, and chemical sensing, as well as the new field of microstructured fiber.

scholarly journals PPP-BOTDA Distributed Optical Fiber Sensing Technology and Its Application to the Baishuihe Landslide

2021 ◽  
Vol 9 ◽  
Author(s):  
Meng Zhao ◽  
Xianlong Yi ◽  
Junrong Zhang ◽  
Chengyuan Lin
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Surface Deformation ◽  
Deformation Monitoring ◽  
Landslide Monitoring ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
Distributed Optical Fiber ◽  
Area Difference

Serious landslide hazards are prevalent along the Yangtze River in China, particularly in the Three Gorges Reservoir area. Thus, landslide monitoring and forecasting technology research is critical if landslide geological hazards are to be prevented and controlled. Pulse-prepump brillouin optical time domain analysis (PPP-BOTDA) distributed optical fiber sensing technology is a recently developed monitoring method with evident advantages in precision and spatial resolution. Herein, fixed-point immobilization and direct burying methods were adopted to arrange parallel distribution of the strain and temperature-compensated optical fibers along the Baishuihe landslide’s front edge, in order to carry out ground surface deformation monitoring. The strain data acquired from both optical fibers were processed with temperature compensation to obtain the actual optical fiber strain produced by deformation. Butterworth low-pass filter denoising method was employed to determine the filter order (n) and cut-off frequency (Wn). The area differences between the two optical fiber monitoring curves and the fixed horizontal axis were selected as evaluation indexes to obtain the area difference along the optical fiber. This data were then leveraged to determine the positive correlation between the area difference and the optical fiber strain variation degree. Finally, these results were compared with the GPS and field measured data. This study shows that when PPP-BOTDA technology is used for landslide surface deformation monitoring in conjunction with Butterworth filter denoising and strain area difference, the optical fiber strain variation degree analysis results are consistent with the GPS monitoring data and the actual landslide deformation. As such, this methodology is highly relevant for reducing the workload and improving the monitoring precision in landslide monitoring, which in turn will protect lives and property.

scholarly journals Fast Hotspot Detection in SFCLs by Exploiting Strain Response in Optical Fiber Sensing

2021 ◽  
pp. 1-1
Author(s):  
Arooj Akbar ◽  
Nicolo' Riva ◽  
Zhisheng Yang ◽  
Luc Thevenaz ◽  
Bertrand Dutoit
Keyword(s):  
Optical Fiber ◽  
Strain Response ◽  
Hotspot Detection ◽  
Fiber Sensing ◽  
Optical Fiber Sensing

An optical fiber sensing method for partial discharge in the HVDC cable system

2021 ◽  
Vol 128 ◽  
pp. 106749
Author(s):  
Zhiheng Liu ◽  
Yongqing Wang ◽  
Xiao Chen ◽  
Xiaokai Meng ◽  
Xiuling Liu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Partial Discharge ◽  
Cable System ◽  
Fiber Sensing ◽  
Optical Fiber Sensing
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