<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Due to their wide range of friction characteristics resulting from the application of different friction materials and good heat dissipation conditions, railway disc brakes have long replaced block brakes in many rail vehicles. A block brake still remains in use, however, in low speed cargo trains. The paper presents the assessment of the braking process through the analysis of vibrations generated by the components of the brake system during braking. It presents a possibility of a wider application of vibroacoustic diagnostics (VA), which aside from the assessment of technical conditions (wear of brake pads) also enables the determination of the changes of the average friction coefficient as a function of the braking onset speed. Vibration signals of XYZ were measured and analyzed. The analysis of the results has shown that there is a relation between the values of the point measures and the wear of the brake pads.</p></abstract>

Due to their wide range of friction characteristics resulting from the application of different friction materials and good heat dissipation conditions, railway disc brakes have long replaced block brakes in many rail vehicles. A block brake still remains in use, however, in low speed cargo trains. The paper presents the assessment of the braking process through the analysis of vibrations generated by the components of the brake system during braking. It presents a possibility of a wider application of vibroacoustic diagnostics (VA), which aside from the assessment of technical conditions (wear of brake pads) also enables the determination of the changes of the average friction coefficient as a function of the braking onset speed. Vibration signals of XYZ were measured and analyzed. The analysis of the results has shown that there is a relation between the values of the point measures and the wear of the brake pads.

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

Institute of Combustion Engines and Transport, Faculty of Machines and Transport

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Due to their wide range of friction characteristics resulting from the application of different friction materials and good heat dissipation conditions,...

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

Published Online: Jun 15, 2017

Page range: 125 - 134

Received: Dec 02, 2016

Accepted: May 16, 2017

DOI: https://doi.org/10.1515/msr-2017-0016

Keywords
Vibration, signal, diagnostic, railway disc brake, coefficient of friction

© 2017 Wojciech Sawczuk, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

Published Online: Jun 15, 2017

Page range: 125 - 134

Received: Dec 02, 2016

Accepted: May 16, 2017

DOI: https://doi.org/10.1515/msr-2017-0016

KeywordsVibration, signal, diagnostic, railway disc brake, coefficient of friction

© 2017 Wojciech Sawczuk, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Vibration, signal, diagnostic, railway disc brake, coefficient of friction