Ahmed Lasisi, Jonathan D. Regehr, Julian Carneiro, Ian Jeffrey, Eric Magel, Sylvie Chenier and Mark Reimer presented "Characterizing Rail Corrugation Through a Data-Driven Assessment of Impacts on Noise and Vibration" at the Canadian & Cold Regions Rail Research Conference 2021. The Proceedings for CCRC 2021 can be downloaded for free at [ Ссылка ]

Abstract: This paper describes an ongoing effort to examine existing measures of rail corrugation using real-world rail performance data with the aim of proffering improvements to the management of rail grinding programs in North America. The study details work that has significantly improved our understanding of corrugation interaction with noise and vibration using data from rail transit systems. Several analytic techniques were employed to characterize corrugation data with filter sizes, wavelength bands, segment length and track geometry, sensor position and measures of statistical aggregation. A data-driven approach to match corrugation severity to wayside noise levels is proposed for the corrugation observed within 30-100mm wavelength, and a mathematical model was developed using the 95th percentile noise and corrugation levels on a sample of tangent track. This paper also describes ongoing work to characterize corrugation with vibration using mapped railcar-mounted accelerometer data. The study closes with an attempt to estimate grind effectiveness with observable noise levels tied to corrugation pre- and post-grind. The approach offers a low-cost alternative to managing grinding programs using corrugation covariates like noise and vibration.

Speaker Bio: Julian Carneiro is an MSc student in Computer Engineering at the University of Manitoba under the supervision of Dr. Ian Jeffrey and Dr. Jonathan Regehr, focusing on Applied Machine Learning and Signal Processing. He is looking to improve data-driven analysis techniques used in industry by adapting some of these high-level mathematical approaches to the methodologies currently in use.

This video is part of the Canadian & Cold Regions Rail Research Conference 2021, which took place virtually November 9-10, 2021. This video is not available for download or distribution without consent from the Canadian Rail Research Laboratory (CaRRL) or the University of Alberta Geotechnical Centre.

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