Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch

Paper-based friction materials used for wet clutches in automatic transmissions require various tribological functions such as a high and stable friction coefficient, good μ-V (friction coefficient-sliding velocity) characteristics, heat resistance, and wear resistance. In this study, microsc...

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Autores principales:	Shintaro Yagi, Nobuyuki Katayama, Hiroaki Hasegawa, Hiroshi Matsushita, Shin-ichiro Okihara
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2015
Materias:	paper-based friction material surface texture wet clutch Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/2a63889b7a10452394f36fa07b598da7
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id	oai:doaj.org-article:2a63889b7a10452394f36fa07b598da7
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spelling	oai:doaj.org-article:2a63889b7a10452394f36fa07b598da72021-11-05T09:22:15ZEffects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch1881-219810.2474/trol.10.390https://doaj.org/article/2a63889b7a10452394f36fa07b598da72015-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/10/5/10_390/_pdf/-char/enhttps://doaj.org/toc/1881-2198Paper-based friction materials used for wet clutches in automatic transmissions require various tribological functions such as a high and stable friction coefficient, good μ-V (friction coefficient-sliding velocity) characteristics, heat resistance, and wear resistance. In this study, microscale texture was formed on the surface of a paper-based friction material using a picosecond pulse laser, and the friction characteristics were investigated using the SAE#2 test system. Stripe-shaped microtexture (microgrooves) with several patterns of depth and pitch were formed on the friction material surface and controlled by the laser processing conditions. The dynamic friction coefficient was particularly improved by the microgrooves under low temperature and low surface pressure conditions. The coefficient changed according to the depth and pitch of the microgrooves, which is related to the volume ratio (microgroove volume per unit volume of paper-based friction material). These results indicate that the dynamic friction coefficient for the wet clutch can be controlled by changing the groove volume ratio according to the laser processing conditions. A new paper-based friction material with a high static friction coefficient (μs) and good μ-V characteristics could be developed by control of the dynamic friction coefficient without changing the pore characteristics of the paper.Shintaro YagiNobuyuki KatayamaHiroaki HasegawaHiroshi MatsushitaShin-ichiro OkiharaJapanese Society of Tribologistsarticlepaper-based friction materialsurface texturewet clutchPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 10, Iss 5, Pp 390-396 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	paper-based friction material surface texture wet clutch Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	paper-based friction material surface texture wet clutch Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Shintaro Yagi Nobuyuki Katayama Hiroaki Hasegawa Hiroshi Matsushita Shin-ichiro Okihara Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch
description	Paper-based friction materials used for wet clutches in automatic transmissions require various tribological functions such as a high and stable friction coefficient, good μ-V (friction coefficient-sliding velocity) characteristics, heat resistance, and wear resistance. In this study, microscale texture was formed on the surface of a paper-based friction material using a picosecond pulse laser, and the friction characteristics were investigated using the SAE#2 test system. Stripe-shaped microtexture (microgrooves) with several patterns of depth and pitch were formed on the friction material surface and controlled by the laser processing conditions. The dynamic friction coefficient was particularly improved by the microgrooves under low temperature and low surface pressure conditions. The coefficient changed according to the depth and pitch of the microgrooves, which is related to the volume ratio (microgroove volume per unit volume of paper-based friction material). These results indicate that the dynamic friction coefficient for the wet clutch can be controlled by changing the groove volume ratio according to the laser processing conditions. A new paper-based friction material with a high static friction coefficient (μs) and good μ-V characteristics could be developed by control of the dynamic friction coefficient without changing the pore characteristics of the paper.
format	article
author	Shintaro Yagi Nobuyuki Katayama Hiroaki Hasegawa Hiroshi Matsushita Shin-ichiro Okihara
author_facet	Shintaro Yagi Nobuyuki Katayama Hiroaki Hasegawa Hiroshi Matsushita Shin-ichiro Okihara
author_sort	Shintaro Yagi
title	Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch
title_short	Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch
title_full	Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch
title_fullStr	Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch
title_full_unstemmed	Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch
title_sort	effects of microscale texture on the tribological behavior of paper-based friction materials for a wet clutch
publisher	Japanese Society of Tribologists
publishDate	2015
url	https://doaj.org/article/2a63889b7a10452394f36fa07b598da7
work_keys_str_mv	AT shintaroyagi effectsofmicroscaletextureonthetribologicalbehaviorofpaperbasedfrictionmaterialsforawetclutch AT nobuyukikatayama effectsofmicroscaletextureonthetribologicalbehaviorofpaperbasedfrictionmaterialsforawetclutch AT hiroakihasegawa effectsofmicroscaletextureonthetribologicalbehaviorofpaperbasedfrictionmaterialsforawetclutch AT hiroshimatsushita effectsofmicroscaletextureonthetribologicalbehaviorofpaperbasedfrictionmaterialsforawetclutch AT shinichirookihara effectsofmicroscaletextureonthetribologicalbehaviorofpaperbasedfrictionmaterialsforawetclutch
_version_	1718444398433271808

Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch

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