PolyU Professors contribute know-how to safety of China’s high-speed rail

Two academics from the Department of Civil and Structural Engineering, The Hong Kon Polytechnic University (PolyU), Prof. Yiqing NI and Prof. Jianhua YIN, have been collaborating with colleagues from other PolyU departments in an interdisciplinary research team that studies the use of optical fibre technology in diverse applications. Their work has contributed to the development of the Advanced Fibre Bragg Grating Railway Monitoring System, which can keep track of train speed, axle balance, and vibration data, helping engineers to monitor the condition of tracks and railcars as well as the structural health of the rail foundation. Coordinating the campus-wide research on railway-related projects, Prof. NI has worked closely with Dalian Jiaotong University to install optical sensors for wind pressure measurement on the new generation of high-speed inspection trains for monitoring purposes.

Moreover, Prof. NI and Prof. YIN have partnered with Southwest Jiaotong University to monitor the settlement of rail foundation using another kind of optical sensor, which will lead to a better understanding of foundation safety and related issues. A project on the use of smart damping technology to enhance the stability of high-speed trains has also been started with China CNR Corporation, Southwest Jiaotong University and Dalian Jiaotong University. In particular, the dampers developed by Prof. NI have worked exceedingly well in the test bed of Southwest Jiaotong University.