Browsing by Author "Lin, Yung-Bin"

Now showing 1 - 3 of 3

Early Warning System Development for Highway Bridge Scouring
(2015-01-01)
Chang, Kuo-Chun
;
Lin, Yung-Bin
;
Chou, Wei-Ting
;
交大名義發表
;
National Chiao Tung University
Scour problem plays a key role in many bridge failures that occur around the globe. More than 1000 bridges have collapsed over the past 30 years in the U.S.A., with 60% of the failures due to scour. This serious problem also happens in many East-Asian countries such as Taiwan and Japan, owing to the fact that these areas are subject to several typhoon, hurricanes and flood events each year during the summer and fall seasons. Therefore, it is necessary to have a reliable estimation of scour hole around bridge piers to ensure that adequate measures are taken to prevent erosion related failure throughout the service life of the structure. Collaborated with the interdisciplinary institute of the National applied Research Laboratories (NARLabs), we have developed and successfully demonstrated the bridge multi-hazards early warning system in the field of Taiwan river basins.
Efficiency Enhancement and Sensitive Broadband 1Hz similar to 1kHz of Power Generator by Recycling Vibration Energy on Automobile
(2012)
Wei, Mao-Qugn
;
Ko, Fu-Hsiang
;
Sun, Tai-Ping
;
Chen, Hsuen-Li
;
Lin, Yung-Bin
Based on novel design of moveable magnet between two mutually inimical magnetic forces without strict fabrication, for the first time, we demonstrate successfully a producible power generator with significant efficiency enhancement at broadband frequency range of 1 Hz similar to 1 kHz, 3D-colis stack-ability for output voltage improvement, and recycling vibration energy on automobile simultaneously. Even though the vibration frequency is as low as 1 Hz, two orders-of-magnitude improvements in normalized power (the ratio of power to product of external force and coil turns) provided from previous reports can be obtained. Further, comparing our device with maturely accelerometer chip (MMA7361) indicates that proposed strategies benefit harvesting vibration energy on driving automobile indeed. This vibrated power generator in-turn provides high potential for applications, such as human motion (1 Hz similar to 2 Hz), sporting (5 Hz similar to 10 Hz), and automotive (10 Hz similar to 1 kHz) etc..
Visible Light Communication System for Offshore Wind Turbine Foundation Scour Early Warning Monitoring
(2019-07-01)
Lin, Yung-Bin
;
Lin, Tzu-Kang
;
Chang, Cheng-Chun
;
Huang, Chang-Wei
;
Chen, Ben-Ting
Offshore wind farms have a superior wind source to terrestrial wind farms, but they also face more severe environmental conditions such as severe storms, typhoons, and sea waves. Scour leads to the excavation of sediments around the foundations of structures, reducing the safe capacity of the structures. The phenomenon of pier scour is extremely complex because of the combined effects of the vortex system involving time-dependent flow patterns and sediment transport mechanisms. A real-time scour monitoring system can improve the safety of structures and afford cost-effective operations by preventing premature or unnecessary maintenance. This paper proposes an on-site scour monitoring system using visible light communication (VLC) modules for offshore wind turbine installations. A flume experiment revealed that the system was highly sensitive and accurate in monitoring seabed scour processes. This arrayed-VLC sensory system, proposed in this paper, has considerable potential for safety monitoring and also can contribute to improving the accuracy of empirical scour formulas for sustainable maintenance in the life cycle of offshore structures.