Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear

Wear and surface microgeometry aspects of fiber-reinforced hybrid composite dry friction clutch facings are revealed in a novel way: after different, real life automotive tests during their lifetime. This study examines and reveals the tribological response of friction material surfaces to real life...

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Autores principales:	Roland Biczó, Gábor Kalácska, Tamás Mankovits
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dry friction hybrid composite surface roughness wear activation energy clutch Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/47985cc46f044b64ba1808b649323b03
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spelling	oai:doaj.org-article:47985cc46f044b64ba1808b649323b032021-11-25T18:48:05ZEffects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear10.3390/polym132238962073-4360https://doaj.org/article/47985cc46f044b64ba1808b649323b032021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3896https://doaj.org/toc/2073-4360Wear and surface microgeometry aspects of fiber-reinforced hybrid composite dry friction clutch facings are revealed in a novel way: after different, real life automotive tests during their lifetime. This study examines and reveals the tribological response of friction material surfaces to real life application conditions with two different facing diameters and in two directions. Along the increasing activation energy scale, wear values increased according to two different trends, sorting tests into two main groups, namely ‘clutch killer’ and ‘moderate’. Wear results also highlighted the influence of mileage and test conditions, with clutch killer tests also creating considerable wear-more than 0.1 mm-at inner diameters: 1% higher wear was generated by 90% higher mileage; another 1% increment could be caused by insufficient cooling time or test bench-specific conditions. Surface roughness values trends varied accordingly with exceptions revealing effects of facing size, friction diameter and directions and test conditions: small (S) facings produced significantly decreased Rmax roughness, while large (L) and medium (M) size facings had increased roughness values; Rmax results showed the highest deviations among roughness values in radial direction; tests run with trailer and among city conditions resulted in more than 2% thickness loss and a 40–50% roughness decrease.Roland BiczóGábor KalácskaTamás MankovitsMDPI AGarticledry frictionhybrid compositesurface roughnesswearactivation energyclutchOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3896, p 3896 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dry friction hybrid composite surface roughness wear activation energy clutch Organic chemistry QD241-441
spellingShingle	dry friction hybrid composite surface roughness wear activation energy clutch Organic chemistry QD241-441 Roland Biczó Gábor Kalácska Tamás Mankovits Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear
description	Wear and surface microgeometry aspects of fiber-reinforced hybrid composite dry friction clutch facings are revealed in a novel way: after different, real life automotive tests during their lifetime. This study examines and reveals the tribological response of friction material surfaces to real life application conditions with two different facing diameters and in two directions. Along the increasing activation energy scale, wear values increased according to two different trends, sorting tests into two main groups, namely ‘clutch killer’ and ‘moderate’. Wear results also highlighted the influence of mileage and test conditions, with clutch killer tests also creating considerable wear-more than 0.1 mm-at inner diameters: 1% higher wear was generated by 90% higher mileage; another 1% increment could be caused by insufficient cooling time or test bench-specific conditions. Surface roughness values trends varied accordingly with exceptions revealing effects of facing size, friction diameter and directions and test conditions: small (S) facings produced significantly decreased Rmax roughness, while large (L) and medium (M) size facings had increased roughness values; Rmax results showed the highest deviations among roughness values in radial direction; tests run with trailer and among city conditions resulted in more than 2% thickness loss and a 40–50% roughness decrease.
format	article
author	Roland Biczó Gábor Kalácska Tamás Mankovits
author_facet	Roland Biczó Gábor Kalácska Tamás Mankovits
author_sort	Roland Biczó
title	Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear
title_short	Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear
title_full	Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear
title_fullStr	Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear
title_full_unstemmed	Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear
title_sort	effects of automotive test parameters on dry friction fiber-reinforced clutch facing surface microgeometry and wear
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/47985cc46f044b64ba1808b649323b03
work_keys_str_mv	AT rolandbiczo effectsofautomotivetestparametersondryfrictionfiberreinforcedclutchfacingsurfacemicrogeometryandwear AT gaborkalacska effectsofautomotivetestparametersondryfrictionfiberreinforcedclutchfacingsurfacemicrogeometryandwear AT tamasmankovits effectsofautomotivetestparametersondryfrictionfiberreinforcedclutchfacingsurfacemicrogeometryandwear
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Effects of Automotive Test Parameters on Dry Friction Fiber-Reinforced Clutch Facing Surface Microgeometry and Wear

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