Strain measurement in concrete structure using distributed fiber optic sensing based on Brillouin scattering with single-mode fibers embedded in glass fiber reinforcing vinyl ester rod and bonded to steel reinforcing bars

2001 ◽  
Author(s):  
Cia Y. Chhoa ◽  
Xiaoyi Bao ◽  
Theodore W. Bremner ◽  
Anthony W. Brown ◽  
Michael D. DeMerchant ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Concrete Structure ◽  
Strain Measurement ◽  
Vinyl Ester ◽  
Fiber Optic ◽  
Brillouin Scattering ◽  
Single Mode ◽  
Reinforcing Bars ◽  
Fiber Optic Sensing

Microbubble based fiber-optic Fabry–Perot interferometer formed by fusion splicing single-mode fibers for strain measurement

2012 ◽  
Vol 51 (8) ◽  
pp. 1033 ◽  
Author(s):  
De-Wen Duan ◽  
Yun-jiang Rao ◽  
Yu-Song Hou ◽  
Tao Zhu
Keyword(s):  
Strain Measurement ◽  
Fiber Optic ◽  
Single Mode ◽  
Fabry Perot

Improved distributed fiber optic sensing system based on single-ended double-pulse input Brillouin scattering

2014 ◽  
Author(s):  
Tianying Chang ◽  
Ruijuan Yang ◽  
Yongliang Wang ◽  
David Y. Li ◽  
Lei Jia ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Brillouin Scattering ◽  
Double Pulse ◽  
Pulse Input ◽  
Sensing System ◽  
Fiber Optic Sensing

scholarly journals Application of distributed fiber optic sensing technique in land subsidence monitoring in coastal areas: a case study in Tianjin, China

2020 ◽  
Vol 382 ◽  
pp. 137-141
Author(s):  
Su-Ping Liu ◽  
Bin Shi ◽  
Kai Gu ◽  
Cheng-Cheng Zhang ◽  
Song Zhang ◽  
...  
Keyword(s):  
Land Subsidence ◽  
Fiber Optic ◽  
Brillouin Scattering ◽  
Coastal Areas ◽  
The Novel ◽  
Fiber Optic Sensing ◽  
Monitoring Technologies ◽  
Subsidence Monitoring ◽  
Good Agreement

Abstract. Land subsidence is a worldwide geohazard caused by various factors, and its direct impact is loss of elevation, which is especially severe in coastal areas due to sea level rise. Quantifying contributions of compressed strata is significant for evaluating the subsidence. In this paper, we used distributed fiber optic sensing (DFOS) with Brillouin scattering to monitor the strain distribution along optical cables embedded in a borehole located in Tianjin, China. The novel technique revealed that the land subsidence rate was 21.2 mm a−1 from 2017 to 2019. The strata contributed to the subsidence have been identified in the range of 3 to 35 m. The results showed good agreement with those obtained by a group of extensometers. We demonstrated that DFOS could be a supplement to land subsidence monitoring technologies in coastal areas.

Heavy Metal Detection based on Coreless Fibers Using the LSPR Technique

2021 ◽  
Vol 19 (7) ◽  
pp. 78-83
Author(s):  
Mohammed S. Sada ◽  
Bushra R. Mahdi ◽  
Hashim Ali ◽  
Nahla A. Aljbar ◽  
Mahdi A. Mohammed
Keyword(s):  
Heavy Metal ◽  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Localized Surface Plasmon ◽  
Fiber Structure ◽  
Immersion Method ◽  
Heavy Metal Detection ◽  
Zinc Concentrations ◽  
Fiber Optic Sensing

In this study, a fiber optic sensing probes based on localized surface Plasmon resonance was presented to detect various Heavy metal zinc concentrations in an aqueous solution. The fiber optic sensing probe consists of a single mode fiber-coreless fiber-single mode fiber structure coated with a 40 nm thickness of gold nanoparticles - polyvinyl pyrrolidone using an immersion method. The results obtained in the experiment showed that the sensor's sensitivity is 1.38 nm/ppm in the range of 0 to 6 ppm concentrations.

Quantitative strain measurement and crack detection in RC structures using a truly distributed fiber optic sensing system

2012 ◽  
Vol 37 ◽  
pp. 916-923 ◽  
Author(s):  
J.-M. Henault ◽  
M. Quiertant ◽  
S. Delepine-Lesoille ◽  
J. Salin ◽  
G. Moreau ◽  
...  
Keyword(s):  
Strain Measurement ◽  
Crack Detection ◽  
Fiber Optic ◽  
Rc Structures ◽  
Sensing System ◽  
Fiber Optic Sensing
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