Abstract
In this work, the problematic identification of the main sources of noise occurring from the exploitation of railway vehicles moving at a speed of 200 km/h were analyzed. Within the conducted experimental research, the testing fields were appointed, measurement apparatus selected, and a methodology for conducting measurements was defined, including the assessment of noise on a curve and straight track for electric multiple units of the so-called Pendolino, an Alstom type ETR610 series ED25 train. The measurements were made using a microphone camera Bionic S-112 at a distance of 22 m from the track axis. As a result of the conducted experimental research, it was indicated that the noise resulting from vibrations arising at the wheel-rail contact (rolling noise) was the dominant source of sound.
Highlights
Due to the continuous modernization of railway lines aimed at increasing the operating speed of vehicles, as well as the systematic approach of acoustically protected buildings to railway areas, the noise threat is increasing
There are many ways of limiting and reducing noise in rail transport, including constructional solutions used in railway vehicles as well as methods used on railway lines to preserve acoustically protected areas
In order to effectively select and apply solutions and methods to reduce the negative impact of noise on the environment, it is necessary to properly and thoroughly identify the acoustic emission of railway vehicles, including among others. the main sources of noise emissions [1,2,3,4,5]
Summary
Due to the continuous modernization of railway lines aimed at increasing the operating speed of vehicles, as well as the systematic approach of acoustically protected buildings to railway areas, the noise threat is increasing. Noise has for many years become the main source of pollution from rail transport; its effects are experienced by an increasing number of people. There are many ways of limiting and reducing noise in rail transport, including constructional solutions used in railway vehicles as well as methods used on railway lines to preserve acoustically protected areas. In order to effectively select and apply solutions and methods to reduce the negative impact of noise on the environment, it is necessary to properly and thoroughly identify the acoustic emission of railway vehicles, including among others. Acoustic emission analysis is used in many sectors of transport and industry, among others, to detect and monitor damages, leaks, fatigue, or structural analysis of various materials (e.g., concrete, plastics, wood, ceramics) [6,7,8,9,10,11,12]
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