Abstract
Measurements are presented of irregularities on rails in the wavelength range 6.3-5000 mm. Two types of equipment have been used, a hand-held measuring trolley (the so-called CAT) and vehicle-mounted RCA equipment that is typically used for routine quality assurance of rail reprofiling work. There is close correlation of one-third octave spectra from the two types of equipment for most of the wavelength range of interest. The RCA is a more repeatable instrument than the CAT for wavelengths of greater than a metre. Use of such equipment offers a relatively simple, readily available means of controlling residual irregularities from reprofiling and thereby reducing noise. Control of irregularities over a wide wavelength range is within the capabilities of modern reprofiling equipment, but only if an appropriate specification is rigorously monitored.
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© 2015 Springer-Verlag Berlin Heidelberg
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Grassie, S.L. (2015). Measurement of Long Wavelength Irregularities on Rails. In: Nielsen, J., et al. Noise and Vibration Mitigation for Rail Transportation Systems. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 126. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44832-8_76
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DOI: https://doi.org/10.1007/978-3-662-44832-8_76
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