Analysis of Noise Emissions at Wheel-Rail Contact

Abstract

The paper presents the problem of measuring noise emissions at the wheel-rail interface using the method developed Dynamic Opto-Acoustic Method for Railway Superstructure Emission Noise Assessment by the project HLUKOS. Based on the theory of rail vehicle noise, it presents the state of the art of the research project in terms of requirements for data acquisition equipment (microphones placed in the undercarriage of rail vehicles), evaluation of the captured data and their subsequent application. It presents the results of the correlation between explanatory variables and the testing of mixed regression models. It also draws attention to the not entirely favourable results of the analysis of the measured data so far and the need to categorise the data according to operational and infrastructure criteria.