Strain measurement of steel structure using a novel FBG sensor packaged by titanium alloy slice

2005 ◽  
Author(s):  
Xiujuan Yu ◽  
Youlong Yu ◽  
Yanbiao Liao ◽  
Min Zhang ◽  
Shurong Lai
Keyword(s):  
Titanium Alloy ◽  
Strain Measurement ◽  
Steel Structure ◽  
Fbg Sensor

Novel FBG triangular filter for interrogating a FBG sensor in dynamic strain measurement

2006 ◽  
Vol 2 (5) ◽  
pp. 336-338
Author(s):  
Li-yang Shao ◽  
Jian-fei Song ◽  
A-ping Zhang ◽  
Sai-ling He
Keyword(s):  
Strain Measurement ◽  
Dynamic Strain ◽  
Fbg Sensor

FBG Sensor Technology to Interfacial Strain Measurement in CFRP-Strengthened Concrete Beam

2012 ◽  
Vol 39 (5) ◽  
pp. 21-29 ◽  
Author(s):  
K. Kesavan ◽  
K. Ravisankar ◽  
R. Senthil ◽  
B. Arun Sundaram ◽  
S. Parivallal
Keyword(s):  
Strain Measurement ◽  
Concrete Beam ◽  
Sensor Technology ◽  
Fbg Sensor ◽  
Interfacial Strain

In Line Inspection of Geotechnical Hazards

2014 ◽  
Author(s):  
Stephen Westwood ◽  
Dan Jungwirth ◽  
Randy Nickle ◽  
Doug Dewar ◽  
Michael Martens
Keyword(s):  
Technology Implementation ◽  
Strain Measurement ◽  
Axial Strain ◽  
Steel Structure ◽  
Total Strain ◽  
Electromagnetic Properties ◽  
Strain Gauges ◽  
Measurement Tool ◽  
Survey Tool

Four North American pipeline operators and a pipeline inspection company have been working together on a research project assessing the feasibility of using an electromagnetic non-contacting strain measurement tool capable of being deployed during ILI inspection to measure axial strain in pipelines. The axial strain sensor is the TSC StressProbe. It is an electromagnetic technique which makes use of the fact that when a steel structure is loaded, its electromagnetic properties change. Monitoring the changes in magnetic properties allows one to measure changes in strain. The use of in-line inspection high resolution inertial survey tool data in the determination of bending strain in operating pipelines is well developed and understood. The missing component in determining the total strain in the pipeline is to understand the component of axial strain that the pipeline is experiencing without the need to expose the pipeline for the installation of surficial pipe monitoring (primarily strain gauges) or destructive testing (such as cut-outs). Many current methods of stress/strain measurement including the installation of strain gauges only allows for the determination of change in strain going forward from the date of install; whereas, the StressProbe responds to total strain at the time of inspection. This paper will present the technology implementation, inspection feasibility and discuss preliminary results from case studies in determining the ability of the in-line inspection axial strain measurement to correlate with known changes in strain in pipelines being influenced by ground movements.

Viability of using an embedded FBG sensor in a composite structure for dynamic strain measurement

Measurement ◽  
2006 ◽  
Vol 39 (4) ◽  
pp. 328-334 ◽  
Author(s):  
Hang-yin Ling ◽  
Kin-tak Lau ◽  
Li Cheng ◽  
Wei Jin
Keyword(s):  
Composite Structure ◽  
Strain Measurement ◽  
Dynamic Strain ◽  
Fbg Sensor

Low cost interrogation technique for a FBG sensor for combined transverse and longitudinal strain measurement

2008 ◽  
Author(s):  
Z. Brodzeli ◽  
G. W. Baxter ◽  
S. F. Collins ◽  
J. Canning ◽  
M. Stevenson ◽  
...  
Keyword(s):  
Strain Measurement ◽  
Longitudinal Strain ◽  
Low Cost ◽  
Fbg Sensor ◽  
Interrogation Technique

Experiment Study on Shrink Strain Monitoring of Concrete in the Cure Period With FBG Sensors

2005 ◽  
Author(s):  
Li Sun ◽  
Hong-Nan Li ◽  
Liang Ren
Keyword(s):  
Temperature Sensor ◽  
Strain Measurement ◽  
Strain Sensor ◽  
Early Age ◽  
Thermal Drift ◽  
Experiment Study ◽  
Fbg Sensor ◽  
Strain Monitoring ◽  
Fbg Sensors ◽  
Ideal Method

Concrete is the material widely used in civil engineering. Cracks of concrete are mainly caused by the ununiform shrink in the cure period. The basic principle and merits of FBG are introduced. In order to monitor the shrink strain and temperature of concrete during the cure period, this paper presents a novelty strain sensor and temperature sensor based on FBG technology. The theoretical and experimental analyses of FBG sensor were implemented. The thermal drift experiment of sensor has also been carried out. Shrink strain and temperature of concrete have been successfully tested. The experiment results indicated that this monitor method is an ideal method in monitoring the concrete at the very early age. However, the thermal drift of FBG strain sensor should be considered during the strain measurement. This method could be used in monitoring the shrink strain and temperature of any volume concrete.

J044022 Dynamic strain measurement of a mechanical element in liquid hydrogen using an FBG sensor

2012 ◽  
Vol 2012 (0) ◽  
pp. _J044022-1-_J044022-4
Author(s):  
Tomio NAKAJIMA ◽  
Satoshi TAKADA ◽  
Eiichi SATO ◽  
Hlroshi TSUDA ◽  
Akiyoshi SATO
Keyword(s):  
Strain Measurement ◽  
Liquid Hydrogen ◽  
Dynamic Strain ◽  
Fbg Sensor ◽  
Mechanical Element

BOTDR integrated with FBG sensor array for distributed strain measurement

2010 ◽  
Vol 46 (1) ◽  
pp. 66 ◽  
Author(s):  
A. Sun ◽  
Y. Semenova ◽  
G. Farrell ◽  
B. Chen ◽  
G. Li ◽  
...  
Keyword(s):  
Strain Measurement ◽  
Sensor Array ◽  
Fbg Sensor ◽  
Distributed Strain
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