A study of brake contact pairs under different friction conditions with respect to characteristics of brake pad surfaces

L. Wei; Y. S. Choy; C. S. Cheung

doi:10.1016/j.triboint.2019.05.016

A study of brake contact pairs under different friction conditions with respect to characteristics of brake pad surfaces

L. Wei, Y. S. Choy, C. S. Cheung

Research output: Journal article publication › Journal article › Academic research › peer-review

50 Citations (Scopus)

Abstract

In the present study, influences of friction conditions on friction and wear behaviors, as well as characteristics of brake pad surfaces were investigated. Low metallic (LM), semi metallic (SM) and non-asbestos organic (NAO) brake pads sliding against an iron disc were tested using a pin-on-disc tribometer. Results show that the friction coefficient and specific wear rate decrease with increasing contact pressure and sliding velocity. For the morphology of brake pad surface, friction layers are large with few cracks on surfaces of SM and LM brake pads. While for NAO brake pad, friction layers have a comparatively slender and irregular shape. From fractal analysis, the fractal dimension of brake pad surface is in the range of 2.38–2.84 for all brake pads.

Original language	English
Pages (from-to)	99-110
Number of pages	12
Journal	Tribology International
Volume	138
DOIs	https://doi.org/10.1016/j.triboint.2019.05.016
Publication status	Published - Oct 2019

Keywords

Disc brake
Fractal dimension
Friction and wear
Pin-on-disc

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.triboint.2019.05.016

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title = "A study of brake contact pairs under different friction conditions with respect to characteristics of brake pad surfaces",

abstract = "In the present study, influences of friction conditions on friction and wear behaviors, as well as characteristics of brake pad surfaces were investigated. Low metallic (LM), semi metallic (SM) and non-asbestos organic (NAO) brake pads sliding against an iron disc were tested using a pin-on-disc tribometer. Results show that the friction coefficient and specific wear rate decrease with increasing contact pressure and sliding velocity. For the morphology of brake pad surface, friction layers are large with few cracks on surfaces of SM and LM brake pads. While for NAO brake pad, friction layers have a comparatively slender and irregular shape. From fractal analysis, the fractal dimension of brake pad surface is in the range of 2.38–2.84 for all brake pads.",

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AU - Wei, L.

AU - Choy, Y. S.

AU - Cheung, C. S.

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Y1 - 2019/10

N2 - In the present study, influences of friction conditions on friction and wear behaviors, as well as characteristics of brake pad surfaces were investigated. Low metallic (LM), semi metallic (SM) and non-asbestos organic (NAO) brake pads sliding against an iron disc were tested using a pin-on-disc tribometer. Results show that the friction coefficient and specific wear rate decrease with increasing contact pressure and sliding velocity. For the morphology of brake pad surface, friction layers are large with few cracks on surfaces of SM and LM brake pads. While for NAO brake pad, friction layers have a comparatively slender and irregular shape. From fractal analysis, the fractal dimension of brake pad surface is in the range of 2.38–2.84 for all brake pads.

AB - In the present study, influences of friction conditions on friction and wear behaviors, as well as characteristics of brake pad surfaces were investigated. Low metallic (LM), semi metallic (SM) and non-asbestos organic (NAO) brake pads sliding against an iron disc were tested using a pin-on-disc tribometer. Results show that the friction coefficient and specific wear rate decrease with increasing contact pressure and sliding velocity. For the morphology of brake pad surface, friction layers are large with few cracks on surfaces of SM and LM brake pads. While for NAO brake pad, friction layers have a comparatively slender and irregular shape. From fractal analysis, the fractal dimension of brake pad surface is in the range of 2.38–2.84 for all brake pads.

KW - Disc brake

KW - Fractal dimension

KW - Friction and wear

KW - Pin-on-disc

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JO - Tribology International

JF - Tribology International

ER -

A study of brake contact pairs under different friction conditions with respect to characteristics of brake pad surfaces

Abstract

Keywords

ASJC Scopus subject areas

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