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Laboratory Device Detecting the Magnitude of the Static Friction Coefficient of Brake Lining
 
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1
VSB - Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, 17. listopadu 2172/15, 708 00 Ostrava - Poruba, Czech Republic
 
2
VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electrical Engineering, 17. listopadu 2172/15, 708 00 Ostrava - Poruba, Czech Republic
 
 
Data publikacji: 01-06-2021
 
 
Autor do korespondencji
Leopold Hrabovský   

VSB - Technical University of Ostrava Faculty of Mechanical Engineering Institute of Transport 17. listopadu 2172/15 708 00 Ostrava - Poruba Czech Republic
 
 
Adv. Sci. Technol. Res. J. 2021; 15(2):191-197
 
SŁOWA KLUCZOWE
DZIEDZINY
 
STRESZCZENIE
The paper describes the design of laboratory equipment, which was created for verification and determination of the value of the static coefficient of friction in the contact surfaces of the brake lining and the brake drum of the drum brake with external shoes by experimental procedure. Suppliers of brake linings state values of the friction coefficients which correspond to different operating temperatures, but do not state the values of the friction coefficient of the respective brake lining with regard to the state of contamination of the contact surfaces. In practice, brake contact surfaces are exposed to moisture, dust, lubricants and oils, and these weather and operational influences significantly affect the value of the coefficient of friction. The results of laboratory tests performed with two types of brake linings (commonly used in practice) (fabric, hardened rubber) show that the coefficient of friction of a given brake lining is strongly influenced by the state of contamination of the contact surfaces.
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