Analysis of Strain Transfer Efficiency Coefficient of a Novel High-strength Steel Wire FBG Sensor

Accurately measuring cable forces is crucial for reliable bridge condition evaluation, yet it remains a challenging task. This study proposes the use of a High-strength Steel Wire Fiber Bragg Grating (HSW-FBG) sensor embedded in commonly-used cables composed of 5–7 mm parallel steel wires. The HSW-F...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2024, 28(10), , pp.4423-4435
Main Authors: Yan, Kun, Yi, Zhixiong, Li, Qi, Liu, Gang, Jiang, Chaoyue, Wang, Lu
Format: Article
Language:English
Subjects:
Bragg gratings
Cables
Civil Engineering
Engineering
Geotechnical Engineering & Applied Earth Sciences
High strength steel
High strength steels
Industrial Pollution Prevention
Life span
Mechanical properties
Modulus of elasticity
Packaging
Parameters
Sensors
Steel
Steel wire
Strain analysis
Strain measurement
Structural Engineering
Wire ropes
토목공학
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Summary:Accurately measuring cable forces is crucial for reliable bridge condition evaluation, yet it remains a challenging task. This study proposes the use of a High-strength Steel Wire Fiber Bragg Grating (HSW-FBG) sensor embedded in commonly-used cables composed of 5–7 mm parallel steel wires. The HSW-FBG sensor facilitates direct strain measurement, offering a simple and user-friendly packaging process for high-precision monitoring throughout the cable’s lifespan. The results demonstrate excellent linearity and repeatability in strain detection of the HSW-FBG sensor. The length of the packaging layer has the most significant impact on the strain transfer efficiency (STE) coefficient and should be at least 60 mm required for optimal performance. Additionally, the elastic modulus of the packaging layer moderately affects the STE coefficient. Adhering to these packaging parameter requirements ensures that the STE coefficient of the HSW-FBG sensor is very close to 1, enabling for high-precision measurement without correction. A systematic analysis of the STE coefficient of the HSW-FBG sensor is conducted, determining reasonable values for the packaging parameters. These findings lay the groundwork for future engineering applications, facilitating accurate measurement of cable forces in practical scenarios.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-024-1319-6