Determination of the effect of humidity and relative speed on the coefficient of friction using response surface methodology

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6 Citations (Scopus)

Abstract

In order to clarify the influence of duration of rubbing, humidity, and relative speed and their cross influence on friction coefficient (CoF) an analytical model is developed based on experimental results to obtain friction function using response surface methodology (RSM). The CoF with the variation of the factor levels is investigated experimentally on a micro-tribometer machine. The surface conditions of the mild steel disc base plate were 'as-turned' and tested at different humidity conditions of 50, 65, and 80%, at relative speed of 0.5, 2.25, and 4 m/s and duration of rubbing of 0.5, 2.5, and 5 min. The humidity was controlled by passing a suitable combination of atmospheric air and water into a closed chamber. A standard RSM design called a central composite design (CCD) that is suited to fit a quadratic surface is utilized to study the CoF in dry contact. It is found that the CoF increased nonlinearly with the duration of rubbing at different levels of humidity and relative speed. The CoF is decreased almost linearly with humidity and relative speed at various levels of duration of rubbing.

Original languageEnglish
Pages (from-to)889-892
Number of pages4
JournalSurface and Interface Analysis
Volume40
Issue number3-4
DOIs
Publication statusPublished - Mar 2008

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coefficient of friction
humidity
Atmospheric humidity
methodology
Friction
coefficients
tribometers
Carbon steel
Analytical models
friction
chambers
steels
composite materials
Water
air
Composite materials
Air
water

Keywords

  • Friction coefficient
  • Humidity
  • Speed

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

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title = "Determination of the effect of humidity and relative speed on the coefficient of friction using response surface methodology",
abstract = "In order to clarify the influence of duration of rubbing, humidity, and relative speed and their cross influence on friction coefficient (CoF) an analytical model is developed based on experimental results to obtain friction function using response surface methodology (RSM). The CoF with the variation of the factor levels is investigated experimentally on a micro-tribometer machine. The surface conditions of the mild steel disc base plate were 'as-turned' and tested at different humidity conditions of 50, 65, and 80{\%}, at relative speed of 0.5, 2.25, and 4 m/s and duration of rubbing of 0.5, 2.5, and 5 min. The humidity was controlled by passing a suitable combination of atmospheric air and water into a closed chamber. A standard RSM design called a central composite design (CCD) that is suited to fit a quadratic surface is utilized to study the CoF in dry contact. It is found that the CoF increased nonlinearly with the duration of rubbing at different levels of humidity and relative speed. The CoF is decreased almost linearly with humidity and relative speed at various levels of duration of rubbing.",
keywords = "Friction coefficient, Humidity, Speed",
author = "Jamil Abdo and Nabeel Al-Rawahi",
year = "2008",
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journal = "Surface and Interface Analysis",
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TY - JOUR

T1 - Determination of the effect of humidity and relative speed on the coefficient of friction using response surface methodology

AU - Abdo, Jamil

AU - Al-Rawahi, Nabeel

PY - 2008/3

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N2 - In order to clarify the influence of duration of rubbing, humidity, and relative speed and their cross influence on friction coefficient (CoF) an analytical model is developed based on experimental results to obtain friction function using response surface methodology (RSM). The CoF with the variation of the factor levels is investigated experimentally on a micro-tribometer machine. The surface conditions of the mild steel disc base plate were 'as-turned' and tested at different humidity conditions of 50, 65, and 80%, at relative speed of 0.5, 2.25, and 4 m/s and duration of rubbing of 0.5, 2.5, and 5 min. The humidity was controlled by passing a suitable combination of atmospheric air and water into a closed chamber. A standard RSM design called a central composite design (CCD) that is suited to fit a quadratic surface is utilized to study the CoF in dry contact. It is found that the CoF increased nonlinearly with the duration of rubbing at different levels of humidity and relative speed. The CoF is decreased almost linearly with humidity and relative speed at various levels of duration of rubbing.

AB - In order to clarify the influence of duration of rubbing, humidity, and relative speed and their cross influence on friction coefficient (CoF) an analytical model is developed based on experimental results to obtain friction function using response surface methodology (RSM). The CoF with the variation of the factor levels is investigated experimentally on a micro-tribometer machine. The surface conditions of the mild steel disc base plate were 'as-turned' and tested at different humidity conditions of 50, 65, and 80%, at relative speed of 0.5, 2.25, and 4 m/s and duration of rubbing of 0.5, 2.5, and 5 min. The humidity was controlled by passing a suitable combination of atmospheric air and water into a closed chamber. A standard RSM design called a central composite design (CCD) that is suited to fit a quadratic surface is utilized to study the CoF in dry contact. It is found that the CoF increased nonlinearly with the duration of rubbing at different levels of humidity and relative speed. The CoF is decreased almost linearly with humidity and relative speed at various levels of duration of rubbing.

KW - Friction coefficient

KW - Humidity

KW - Speed

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