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http://dx.doi.org/10.7782/JKSR.2017.20.4.440

Effect of Design variables of Rail Surface Measuring Device on Acoustic Roughness and Spectral Analysis  

Jeong, Wootae (Korea Railroad Research Institute, Transportation Environmental Research Team)
Jeon, Seungwoo (Korea Railroad Research Institute, Transportation Environmental Research Team)
Jeong, Dahae (Department of Robotics & Virtual Engineering, University of Science & Technology)
Choi, Han Shin (Department of Mechanical Engineering, Yonsei University)
Publication Information
Journal of the Korean Society for Railway / v.20, no.4, 2017 , pp. 440-447 More about this Journal
Abstract
Spectrum level for the acoustic roughness of wheels and rail surface should be periodically maintained under the limitation of ISO to reduce rolling noise of railway vehicles. Thus, in maintaining railway track, displacement sensor-based measuring devices are broadly used to measure the surface roughness and to perform spectral analysis. However, these measuring devices cause unexpected measuring errors since the displacement sensors are fixed at moving platforms and the main frame produces pitching motion during measurement. To increase the accuracy of the measured values, this paper has investigated the effects of design variables such as wheel base, additional wheels, and elastic deformation of wheels on the surface roughness and acoustic roughness spectrum.
Keywords
Rail acoustic roughness; Displacement sensor; Spectrum analysis; Autonomous roughness measuring device;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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