Fiber Optic Bragg Grating Sensors

Morey, W. W.; Meltz, G.; Glenn, William H.

doi:10.1117/12.963022

Cited by 446 publications

(208 citation statements)

References 0 publications

Supporting

Mentioning

194

Contrasting

Unclassified

Order By: Relevance

“…You need to put a lot of signal transmission cables and also need the appropriate size of the signal receiving and processing facilities, leading to an increase in the cost. In recent years, the fiber grating technology, which has been widely applied in various fields, has the following virtues: anti-electromagnetic radiation and convenient cascade of the signal without the aid of electricity on the spot [1,2]. However, the bare fiber Bragg grating can only stand 2000 to 3000 micro strain, which can not satisfy the need of practical monitoring of infrastructures, especially for the damage detection.…”

Section: Introductionmentioning

confidence: 99%

Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering

Zhang

Liu

et al. 2014

Photonic Sens

View full text Add to dashboard Cite

Abstract:The theoretical design method of enhanced sensitivity fiber grating (FBG) strain sensors was given, and moreover high qualified strain sensors were developed and fabricated, whose sensing properties were good for practical applications. The strain sensor with cylindrical shell encapsulation contained three tubular structures, due to the uneven surface structure, in the area of the strain concentration, improving the sensitivity. It could achieve the embedment strain measurement and surface measurement and had the advantages of the easy installation. The good agreement was obtained between the measurements and theoretical simulation results. After each calibration test, twenty-four FBG strain sensors and six FBG temperature compensation sensors have been installed on the undersurface of the box girder of Diaoshuiyan bridge in Yongtaiwen highway. Finally, we built up a long-term structure health system for the highway bridge.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering

Zhang

Liu

et al. 2014

Photonic Sens

View full text Add to dashboard Cite

show abstract

“…8. According to the basic principle of fiber grating, the strain coefficient of Bragg grating near 1550 nm is 1.209 pm/ [14]. Ignoring the temperature change during the experiment, the actual strain of the FBG can be obtained though dividing the wavelength variation of the FBG sensor by the strain coefficient.…”

Section: Test On Carbon Fiber Compositementioning

confidence: 99%

Large strain detection of SRM composite shell based on fiber Bragg grating sensor

Zhang¹,

Chang²,

Zhang³

et al. 2017

Photonic Sens

View full text Add to dashboard Cite

There may be more than 2% strain of carbon fiber composite material on solid rocket motor (SRM) in some extreme cases. A surface-bonded silica fiber Bragg grating (FBG) strain sensor coated by polymer is designed to detect the large strain of composite material. The strain transfer relation of the FBG large strain sensor is deduced, and the strain transfer mechanism is verified by finite element simulation. To calibrate the sensors, the tensile test is done by using the carbon fiber composite plate specimen attached to the designed strain sensor. The results show that the designed sensor can detect the strain more than 3%, the strain sensitivity is 0.0762 pm/με, the resolution is 13.13με, and the fitting degree of the wavelength-strain curve fitting function is 0.9988. The accuracy and linearity of the sensor can meet the engineering requirements.

show abstract

“…At the normal temperature and without strain, the wavelength of the reflex light is determined by the structure of the FBG sensor itself [2]. The wavelength is determined by Equation (1) : where λr is the wavelength of the reflex light, n is the effective index of the core of the fiber, and Γ is the grating pitch.…”

Section: Fbg Sensorsmentioning

confidence: 99%

“…A Fiber Bragg Grating (FBG) sensor is a type of optical sensor which is often used in structural health monitoring. FBG sensors have many advantages such as light weight, electromagnetic immunity, resistance to harsh environments and easy multiplexing [1] [2]. The only drawback of applications based on FBG sensors is high cost because of the expense of the associated interrogation system.…”

Section: Introductionmentioning

confidence: 99%

A Real-Time Remote Sensing and Data Acquisition System for a Nuclear Power Plant

Kim¹,

Hieu²,

Beak³

et al. 2011

Nuclear Engineering and Technology

View full text Add to dashboard Cite

Fiber Optic Bragg Grating Sensors

Cited by 446 publications

References 0 publications

Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering

Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering

Large strain detection of SRM composite shell based on fiber Bragg grating sensor

A Real-Time Remote Sensing and Data Acquisition System for a Nuclear Power Plant

Contact Info

Product

Resources

About