Applications of Bragg grating sensors in Europe

Ferdinand, Pierre; Magne, Sylvain; Dewynter-Marty, V.; Martinez, Christophe; Rougeault, S.; Bugaud, M.

doi:10.1364/ofs.1997.otub1

Cited by 42 publications

(24 citation statements)

References 9 publications

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“…This wavelength shift is due to the variation of A and to the variation in the fiber refractive index for the photoelastic effect, according to the following relationship4: (2) where P are the strain optic tensor components, v is the Poisson's ratio, n is the core fiber refractive index, and c is the strain applied to the, grating. The relationship between the wavelength shift and the applied strain appears to be not linear due to the presence of ?LB in the second term of (2).…”

Section: Working Principlementioning

confidence: 99%

Interrogation system for a fiber-Bragg-grating strain sensor for automotive applications

Falciai¹,

Vannini²

2001

Photonics 2000: International Conference on Fiber Optics and Photonics

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In this paper a derivative spectrometer, utilizing an FFP tunable filter for the wavelength shift detection and an electronic device for the signal processing, was realized and tested for data acquisition and elaboration from a fiber-Bragg-grating strain sensor system for automotive applications. The results of measurements carried out both under static and dynamic conditions have been compared with those performed with a strain gauge.

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Section: Working Principlementioning

confidence: 99%

Interrogation system for a fiber-Bragg-grating strain sensor for automotive applications

Falciai¹,

Vannini²

2001

Photonics 2000: International Conference on Fiber Optics and Photonics

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“…Despite being expensive and sensitive to fiber bending, FBG sensing has always been highly regarded and extensively used for SHM. This can be attributed to its simple demodulation, high multiplexing, water and corrosion resistance, and utilization in both localized and quasi-distributed networks, which enable high suitability for SHM in severe and harsh conditions [19,20].…”

Section: Introductionmentioning

confidence: 99%

A Fiber Bragg Grating-Based Condition Monitoring and Early Damage Detection System for the Structural Safety of Underground Coal Mines Using the Internet of Things

Khan

Lee

et al. 2018

Journal of Sensors

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Accurate sensing is the key to structural health monitoring of underground coal mines while using fiber Bragg grating (FBG) sensors. However, the previously developed systems for structural monitoring of underground mines have been limited to monitoring without any capability of damage detection. Therefore, this study integrates a highly accurate FBG monitoring system and output-only data-driven approaches on an Internet of things (IoT)-based platform to develop a comprehensive mine structural safety system. This system relies on a Web 2.0 main server that runs data acquisition, data processing, and damage detection algorithms along with real-time information sharing at remote locations. This system was successfully implemented at the Hassan Kishore coal mine, situated in the Salt Range of Pakistan. Wavelength division multiplexing of the FBG strain sensors reliably captured the effects of dynamic and continuous coal excavation on the stability of mine roadway and access galleries. Principal component analysis, along with hierarchical clustering, was used to determine the damage indicator of the mine. The damage index was validated, showing the minimum value for 2% stiffness reduction. Thus, integration of FBG technology with the Internet can be effectively applied for early safety assessment of underground coal mines and information sharing in real time.

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“…The well-known advantages of fiber-optic Bragg grating (FBG) sensors [1][2][3], such as intrinsic electrical isolation, multiplexing to sensor networks, embedding capability in composites -suggest the application of this technology to the measurement of static and dynamic strain distributions in the carbon/aluminum composite current collector strip (CC) of electrical trains. In this paper, we report the construction of combined strain/temperature sensor pads and the integration of FBG sensor networks composed of such sensor pads in CCs.…”

Section: Introductionmentioning

confidence: 99%

On-line characterization of impacts on electrical train current collectors using integrated optical fiber grating sensor network

Ecke¹,

Schroeder²,

Kautz³

et al. 2005

Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems

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A sensor network consisting of unified fiber grating based temperature and strain sensor pads has been developed for integration in carbon/aluminum composite current collector strips, and has been tested in electrical trains on commercial railways. The fiber optic sensor network measures value and position of both contact forces and impacts under real-time conditions, immediately at the high voltage location of the interface between overhead contact line and current collector.

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Applications of Bragg grating sensors in Europe

Cited by 42 publications

References 9 publications

Interrogation system for a fiber-Bragg-grating strain sensor for automotive applications

Interrogation system for a fiber-Bragg-grating strain sensor for automotive applications

A Fiber Bragg Grating-Based Condition Monitoring and Early Damage Detection System for the Structural Safety of Underground Coal Mines Using the Internet of Things

On-line characterization of impacts on electrical train current collectors using integrated optical fiber grating sensor network

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