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Sökning: WFRF:(Matějka V.)

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1.
  • Matějka, V., et al. (författare)
  • On the running-in of brake pads and discs for dyno bench tests
  • 2017
  • Ingår i: Tribology International. - : Elsevier Ltd. - 0301-679X .- 1879-2464. ; 115, s. 424-431
  • Tidskriftsartikel (refereegranskat)abstract
    • Running-in process of low metallic brake pads and cast iron discs are investigated using full scale inertia brake dynamometer designed for particle emission studies. The airborne particles are measured using ELPI+ and collected on filters. The pads and disc contact surfaces are studied using microscopy techniques. It is observed that the particle emissions from the new pads and discs are significantly higher compared with the used ones and indicates importance of proper running-in of the pads and disc for wear particle emission tests. The results also indicate that pads and disc pairs which are able to stabilize friction behavior faster will produce less particle emissions which could influence the strategies of brake material formulations or steps during their production.
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2.
  • Wahlström, Jens, et al. (författare)
  • Contact pressure and sliding velocity maps of the friction, wear and emission from a low-metallic/cast-iron disc brake contact pair
  • 2017
  • Ingår i: Tribology in Industry. - : Faculty of Engineering, University of Kragujevac. - 0354-8996 .- 2217-7965. ; 39:4, s. 460-470
  • Tidskriftsartikel (refereegranskat)abstract
    • Particulate matter with an aerodynamic diameter less than 10 µm (PM10) from car disc brakes contribute up to 50% of the total non-exhaust emissions from road transport in the EU. These emissions come from the wear of the pad and rotor contact surfaces. Yet few studies have reported contact pressures and offered sliding speed maps of the friction, wear, and particle emission performance of disc brake materials at a material level. Such maps are crucial to understanding material behaviour at different loads and can be used as input data to numerical simulations. A low-metallic pad and grey cast-iron rotor contact pair commonly used today in passenger car disc brakes was studied using a pin-on-disc tribometer at twelve contact pressure and sliding speed combinations. Maps of the coefficient of friction, specific wear rate, particle number, and mass rate are presented and discussed.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Wahlström, Jens (2)
Matějka, V. (2)
Perricone, G. (1)
Söderberg, Anders, 1 ... (1)
Lyu, Yezhe, 1987- (1)
Metinöz, I. (1)
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Alemani, M. (1)
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Kungliga Tekniska Högskolan (2)
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2017 (2)

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