Fiber Bragg grating strain sensors for in situ analysis and monitoring of fiber-reinforced historical civil structures

2008 ◽  
Author(s):  
G. L. Rossi ◽  
E. Speranzini
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Sensors ◽  
In Situ Analysis ◽  
Bragg Grating ◽  
Fiber Reinforced ◽  
Civil Structures

scholarly journals Dynamic Consolidation Measurements in a Well Field Using Fiber Bragg Grating Sensors

Sensors ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 4403 ◽  
Author(s):  
Sandra Drusová ◽  
R. Martijn Wagterveld ◽  
Adam D. Wexler ◽  
Herman L. Offerhaus
Keyword(s):  
Groundwater Flow ◽  
Fiber Bragg Grating ◽  
Strain Sensors ◽  
Bragg Grating ◽  
Soil Consolidation ◽  
Flow Monitoring ◽  
Well Field ◽  
Term Data

Currently available groundwater flow prediction tools and methods are limited by insufficient spatial resolution of subsurface data and the unknown local heterogeneity. In this field study, fiber Bragg grating (FBG) sensors were installed in an extraction well field to investigate its potential to measure groundwater flow velocity. Reference in-situ pore pressure and temperature measurements were used to identify possible sources of FBG responses. FBG strain sensors were able to detect soil consolidation caused by groundwater extraction from 250 m distance. The results show that FBG responses were influenced by interface friction between soil and FBG packaging. FBG packaging slipped in soil and the effect was more pronounced during higher groundwater flow around a nearby well. These FBG fibers could be applied for indirect flow monitoring that does not require any tracer and provide real-time and long-term data during regular operation of extraction wells.

scholarly journals Fiber-Reinforced Polymer-Packaged Optical Fiber Bragg Grating Strain Sensors for Infrastructures under Harsh Environment

2016 ◽  
Vol 2016 ◽  
pp. 1-18 ◽  
Author(s):  
Zhi Zhou ◽  
Zhenzhen Wang ◽  
Lian Shao
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Strain Sensors ◽  
Fiber Reinforced Polymer ◽  
Bragg Grating ◽  
Harsh Environment ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Sensing Performance ◽  
Optical Fiber Bragg Grating

Optical fiber Bragg grating (FBG) has been recognized as an outstanding high-performance local monitoring sensor and is largely applied in structural health monitoring (SHM). This paper proposes a series of fiber-reinforced polymer- (FRP-) packaged optical fiber Bragg grating strain sensors to completely meet the requirements of rough civil engineering infrastructures, and their sensing performance under normal environment and harsh environment is experimentally investigated. It is experimentally and theoretically proved that FRP-packaged FBG strain sensors maintain excellent sensing performance as the bare FBG sensor under a harsh environment, and their durability is significantly enhanced due to the FRP materials. These FRP-packaged FBG strain sensors are successfully applied in the SHM system of Aizhai Bridge.

Structure Optimization of Fiber Bragg Grating Strain Sensors

2012 ◽  
Vol 41 (11) ◽  
pp. 1261-1266 ◽  
Author(s):  
袁子琳 YUAN Zi-lin ◽  
龚元 GONG Yuan ◽  
马耀远 MA Yao-yuan ◽  
杜磊 DU Lei ◽  
吴宇 WU Yu ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Structure Optimization ◽  
Strain Sensors ◽  
Bragg Grating

Fiber Bragg grating sensors for in-situ temperature measurement on bending a flexible planar supercapacitor

2020 ◽  
Vol 314 ◽  
pp. 112266
Author(s):  
Ranjana Seema ◽  
Soumen Mandal ◽  
Preeti Singh ◽  
Souvik Paul ◽  
Nripen Chanda
Keyword(s):  
Temperature Measurement ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors
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