Communications - Scientific Letters of the University of Zilina 2024, 26(1):B31-B40 | DOI: 10.26552/com.C.2024.006

Method for Determining the Factor of Dual Wedge-Shaped Wear of Composite Brake Pads for Freight Wagons

Sergii Panchenko ORCID...1, Juraj Gerlici ORCID...2, Alyona Lovska ORCID...2,*, Glib Vatulia ORCID...3, Vasyl Ravlyuk ORCID...1, Andrij Rybin ORCID...1
1 Ukrainian State University оf Railway Transport, Kharkiv, Ukraine
2 University of Zilina, Zilina, Slovak Republic
3 O. M. Beketov National University of Urban Economy in Kharkiv, Kharkiv, Ukraine

The work highlights the results of a study into the dual wedge-shaped wear of composite brake pads for freight wagons. It has been found that the over-normative wear makes the area of a composite brake pad larger in the lower part up to a value directly proportional to the wagon mileage and smaller in the upper part. To assess the braking efficiency of a rail vehicle, a graphical analytical method has been developed; it allows determining the factor of dual wedge-shaped wear of pads depending on the wagon mileage. The results of calculation were verified by comparing two samplings obtained by mathematical and computer modelling. The results of calculation have proven that the hypothesis on the adequacy is not rejected.
The results of the study conducted will allow more accurate assessment of the braking efficiency of freight rolling stock to be made, as well as contribute to improving the safety of train traffic.

Keywords: transport mechanics, brake pad, dual wedge-shaped wear of the pad, assessment of brake efficiency, brake leverage
Grants and funding:


This work has been supported by the project KEGA 031ZU-4/2023: Development of key competencies of the graduate of the study program Vehicles and Engines.  This research was also supported by the Slovak Research and Development Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic in Educational Grant Agency of the Ministry of Education of the Slovak Republic in the project and VEGA 1/0513/22 “Investigation of the properties of railway brake components in simulated operating conditions on a flywheel brake stand and “EU Next Generation EU through the Recovery and Resilience Plan for Slovakia” under the project No. 09I03-03-V01-00131.

Conflicts of interest:


The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Received: June 26, 2023; Accepted: November 20, 2023; Prepublished online: November 30, 2023; Published: January 8, 2024  Show citation

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Panchenko, S., Gerlici, J., Lovska, A., Vatulia, G., Ravlyuk, V., & Rybin, A. (2024). Method for Determining the Factor of Dual Wedge-Shaped Wear of Composite Brake Pads for Freight Wagons. Communications - Scientific Letters of the University of Zilina, 26(1), B31-40. doi: 10.26552/com.C.2024.006
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