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Mathematical Problems in Engineering
Volume 2016, Article ID 8704134, 8 pages
Research Article

In Situ Measurement of Wind-Induced Pulse Response of Sound Barrier Based on High-Speed Imaging Technology

1School of Electronic and Information Engineering, Hefei Normal University, Hefei 230601, China
2Department of Precise Machine and Precise Instrument, University of Science and Technology of China, Hefei 230027, China

Received 5 April 2016; Accepted 10 August 2016

Academic Editor: Filippo Ubertini

Copyright © 2016 Chunli Zhu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The lifetime of the sound barrier is threatened by high-speed train-induced impulsive wind pressure as it passes by. The vibration response of the sound barrier during the process of train passing is difficult to be measured using conventional measurement methods because of the inconvenience of the installation of markers on the sound barrier. In this paper, the high-speed camera is used to record the whole process of the train passing by the sound barrier. Then, a displacement extraction algorithm based on the theory of Taylor expansion is proposed to obtain the vibration response curve. Compared with the result simulated by using the finite element method, the video extraction result shows the same head wave and tail wave phenomenon, demonstrating that the vibration measurement by using the high-speed imaging technology is an effective measuring way. It can achieve noncontact and remote vibration measurement and has important practical value.