Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Shun-yee Liu"'
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 8 (2011)
Wheel defects on trains, such as flat wheels and out-of-roundness, inevitably jeopardize the safety of railway operations. Regular visual inspection and checking by experienced workers are the commonly adopted practice to identify wheel defects. Howe
Externí odkaz:
https://doaj.org/article/d10d7cbd7a174e259a596e413926e677
Publikováno v:
2018 International Conference on Intelligent Rail Transportation (ICIRT).
This paper depicts an optical fibre sensing network based railway health condition monitoring system that can facilitate predictive maintenance in railways. Machine learning is applied to develop learning models that can be used to detect and identif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a6977f58dc788062978caae9654b43b
https://doi.org/10.1109/icirt.2018.8641602
https://doi.org/10.1109/icirt.2018.8641602
Publikováno v:
IEEE Photonics Technology Letters. 16:224-226
We report a vertical-pendulum-based fiber Bragg grating tilt sensor, which can detect the magnitude as well as the direction of the inclination from the horizontal direction. The sensor is insensitive to temperature, and preliminary results show that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d63708396c4bd76e6c9ea1713523092f
https://doi.org/10.1109/lpt.2003.820101
https://doi.org/10.1109/lpt.2003.820101
Publikováno v:
IEEE Photonics Technology Letters. 15:1525-1527
The demonstration of a 253-cm-long lanthanum-codoped Bi/sub 2/O/sub 3/-based erbium-doped fiber which provides gain of greater than 20 dB and noise figure less than 6.7 dB to 142 dense wavelength-division-multiplexing channels simultaneously over an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e52f5a303bc8c243bbcdbbc3d5a6451
https://doi.org/10.1109/lpt.2003.818644
https://doi.org/10.1109/lpt.2003.818644
Publikováno v:
Fiber Bragg Grating Sensors: Recent Advancements, Industrial Applications and Market Exploitation ISBN: 9781608050840
Fiber Bragg Grating Sensors : Recent Advancements, Industrial Applications and Market Exploitation
Fiber Bragg Grating Sensors : Recent Advancements, Industrial Applications and Market Exploitation
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 composit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77ffe1d9c3ea31254c24f55d830e0e16
https://doi.org/10.2174/978160805084011101010197
https://doi.org/10.2174/978160805084011101010197
Autor:
K. Y. Lee, Andrew McCusker, Tin Kin Ho, S.L. Ho, Chun-cheung Lai, Chuliang Wei, J. Kam, W.H. Chung, Hwa Yaw Tam, Shun-yee Liu
Publikováno v:
IEEE Sensors Journal
Railway signaling facilitates two main functions, namely, train detection and train control, in order to maintain safe separations among the trains. Track circuits are the most commonly used train detection means with the simple open/close circuit pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cd0ac2d28a5cbbd3696f06fd3ce3e1e
https://igi.indrastra.com/items/show/33665
https://igi.indrastra.com/items/show/33665
Publikováno v:
IEEE Photonics Technology Letters. 12:642-644
This letter reports and provides an explanation for the growth behavior of long-period gratings in H/sub 2/-loaded fiber immediately after 193-nm UV inscription. Growth of grating resonance peak by as much as 14 dB was measured. Impact of temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c38b4d4ffcea477230c396df97f9a2f8
https://doi.org/10.1109/68.849070
https://doi.org/10.1109/68.849070
Autor:
Li-Yang Shao, Sien Ting Lau, Xinyong Dong, Chao Lu, Hwa Yaw Tam, Shun Yee Liu, Yong Jun Wang, Helen Lai Wa Chan
Publikováno v:
Passive Components and Fiber-based Devices V.
A fiber laser hydrophone system for measuring tone-burst ultrasonic signals up to 40 MHz is developed. The hydrophone consists of a cladding-etched dual polarization distributed Bragg reflector (DBR) fiber laser. The sensing mechanism is based on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e45aba52e2ab9a9af5be9269da3c620c
https://doi.org/10.1117/12.802861
https://doi.org/10.1117/12.802861
Autor:
Hwa Yaw Tam, Ken Hok Man Ho, K.K. Wong, Tin Kin Ho, S.L. Ho, K. Y. Lee, Shun-yee Liu, Y. T. Ho
Publikováno v:
Railway Condition Monitoring, 2008 4th IET International Conference on
Fibre Bragg Grating (FBG) sensors have been installed along an existing line for the purposes of train detection and weight measurement. The results show fair accuracy and high resolution on the vertical force acted on track when the train wheels are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26df6dcdc24a0ccc779f42384a414822
https://igi.indrastra.com/items/show/33671
https://igi.indrastra.com/items/show/33671
Publikováno v:
Optical Fiber Sensors.
This paper reports on the first realization of installing fibre Bragg grating sensors inside asphalt waterproofing systems on a concrete bridge deck. Measurement results will be used for assessing the integrity of different waterproofing systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::034ab255057f8e6bbd0beb2becf40116
https://doi.org/10.1364/ofs.2006.the6
https://doi.org/10.1364/ofs.2006.the6