Optic fiber sensor-based smart bridge cable with functionality of self-sensing

He, Jianping; Zhou, Zhi; Ou, Jinping

doi:10.1016/j.ymssp.2012.08.022

Cited by 55 publications

(22 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Webb et al performed the state monitoring of a prestressed concrete beam-and-slab bridge located in Cambridgeshire in the UK [154]. He et al proposed a smart bridge optical cable for bridge damage detection by combining FBG and BOTDR/A technique [155]. Liu et al designed a health monitoring sensor for multi-layered pavement by incorporating the FBG and BOTDR sensing techniques.…”

Section: Applicationsmentioning

confidence: 99%

Recent Advances in Brillouin Optical Time Domain Reflectometry

Bai

Wang

et al. 2019

Sensors

View full text Add to dashboard Cite

In the past two decades Brillouin-based sensors have emerged as a newly-developed optical fiber sensing technology for distributed temperature and strain measurements. Among these, the Brillouin optical time domain reflectometer (BOTDR) has attracted more and more research attention, because of its exclusive advantages, including single-end access, simple system architecture, easy implementation and widespread field applications. It is realized mainly by injecting optical pulses into the fiber and detecting the Brillouin frequency shift (BFS), which is linearly related to the change of ambient temperature and axial strain of the sensing fiber. In this paper, the authors provide a review of new progress on performance improvement and applications of BOTDR in the last decade. Firstly, the recent advances in improving the performance of BOTDRs are summarized, such as spatial resolution, signal-to-noise ratio and measurement accuracy, measurement speed, cross sensitivity and other properties. Moreover, novel-type optical fibers bring new characteristics to optic fiber sensors, hence we introduce the different Brillouin sensing features of special fibers, mainly covering the plastic optical fiber, photonic crystal fiber, few-mode fiber and other special fibers. Additionally, we present a brief overview of BOTDR application scenarios in many industrial fields and intelligent perception, including structural health monitoring of large-range infrastructure, geological disaster prewarning and other applications. To conclude, we discuss several challenges and prospects in the future development of BOTDRs.

show abstract

Section: Applicationsmentioning

confidence: 99%

Recent Advances in Brillouin Optical Time Domain Reflectometry

Bai

Wang

et al. 2019

Sensors

View full text Add to dashboard Cite

show abstract

“…When the tensile force of cable is not changed any more, suddenly release the load of oil jack, to achieve the purpose of simulating cable broken wires. In recent years, FBGS show advantages over conventional sensing technology in accuracy, durability and operating distance and has been applied to long-term monitoring of Civil Engineering [15]. Considering technical application practice, the experiment use FBGSs and the metal strain gauges for data acquisition.…”

Section: The Scheme Of the Experimental Systemmentioning

confidence: 99%

An Experimental Study on the Monitoring of Wire Breaks in Bridge Cables

Liu¹,

Li²,

Gong³

et al. 2017

IJHIT

View full text Add to dashboard Cite

show abstract

“…Sensors for measuring the responses of a cable can be installed and utilized in existing bridges, but they are difficult to install. To address this problem, studies on efficient and convenient cable tension measurement methods using a laser vibrometer, elastomagnetic sensors, fiber Bragg grating sensors, and ultrasonic waves have been continually conducted.…”

Section: Introductionmentioning

confidence: 99%

Image‐based back analysis for tension estimation of suspension bridge hanger cables

Kim

Cheung

Park³

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

Summary In suspension bridges, hanger cables are the main load‐supporting members. The tension of the hanger cables of a suspension bridge is a very important parameter for assessing the integrity and safety of the bridge. In general, indirect methods are used to measure the tension of the hanger cables of a suspension bridge in use. A representative indirect method is the vibration method, which extracts modal frequencies from the cables' responses and then measures the cable tension using the cables' geometric conditions and the modal frequencies. In this study, ambient vibration tests were conducted on a suspension bridge in use to verify the validity of the image‐based back analysis method, which can estimate the tension of remote hanger cables using the modal frequencies as a parameter. The tension estimated through back analysis, which was conducted to minimize the difference between the modal frequencies calculated using finite element analysis of the hanger cables and the measured modal frequencies, was compared with that measured using the vibration method. It was confirmed that reliable tension estimation is possible even with low‐order modal frequencies when the image‐based back analysis method is used.

show abstract

Optic fiber sensor-based smart bridge cable with functionality of self-sensing

Cited by 55 publications

References 15 publications

Recent Advances in Brillouin Optical Time Domain Reflectometry

Recent Advances in Brillouin Optical Time Domain Reflectometry

An Experimental Study on the Monitoring of Wire Breaks in Bridge Cables

Image‐based back analysis for tension estimation of suspension bridge hanger cables

Contact Info

Product

Resources

About