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Fiber Bragg Grating sensors for railway systems

Tam, Hwa-Yaw, Liu, Shun-yee, Ho, Siu Lau, & Ho, Tin Kin (2011) Fiber Bragg Grating sensors for railway systems. In Cusano , Andrea, Cutolo, Antonello, & Albert, Jacques (Eds.) Fiber Bragg Grating Sensors : Recent Advancements, Industrial Applications and Market Exploitation. Bentham Science Publishers, Oak Park, IL, pp. 197-217.

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    Abstract

    Fiber Bragg grating (FBG) sensor technology has been attracting substantial industrial interests for the last decade. FBG sensors have seen increasing acceptance and widespread use for structural sensing and health monitoring applications in composites, civil engineering, aerospace, marine, oil & gas, and smart structures. One transportation system that has been benefitted tremendously from this technology is railways, where it is of the utmost importance to understand the structural and operating conditions of rails as well as that of freight and passenger service cars to ensure safe and reliable operation. Fiberoptic sensors, mostly in the form of FBGs, offer various important characteristics, such as EMI/RFI immunity, multiplexing capability, and very long-range interrogation (up to 230 km between FBGs and measurement unit), over the conventional electrical sensors for the distinctive operational conditions in railways. FBG sensors are unique from other types of fiber-optic sensors as the measured information is wavelength-encoded, which provides self-referencing and renders their signals less susceptible to intensity fluctuations. In addition, FBGs are reflective sensors that can be interrogated from either end, providing redundancy to FBG sensing networks. These two unique features are particularly important for the railway industry where safe and reliable operations are the major concerns. Furthermore, FBGs are very versatile and transducers based on FBGs can be designed to measure a wide range of parameters such as acceleration and inclination. Consequently, a single interrogator can deal with a large number of FBG sensors to measure a multitude of parameters at different locations that spans over a large area.

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    ID Code: 47472
    Item Type: Book Chapter
    Additional URLs:
    Keywords: FBG Sensor, Condition Monitoring, Railway Engineering
    DOI: 10.2174/978160805084011101010197
    ISBN: 9781608050840
    Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
    Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Photonics and Electro-Optical Engineering (excl. Communications) (090606)
    Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
    Past > Schools > School of Engineering Systems
    Copyright Owner: Copyright 2011 Bentham Science Publishers
    Deposited On: 05 Dec 2011 12:17
    Last Modified: 07 Dec 2011 06:18

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