Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors

The coefficient of friction (COF) is an important parameter for mechanical engineers to consider when designing frictional connections. Previous work has shown that a surface microstructuring of the harder friction partner leads to a significant increase in the COF. However, the impact of the change...

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Main Authors: Jonathan Schanner, Roman Funke, Andreas Schubert, Alexander Hasse
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Journal of Manufacturing and Materials Processing
Subjects:
Online Access:https://www.mdpi.com/2504-4494/6/6/143
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author Jonathan Schanner
Roman Funke
Andreas Schubert
Alexander Hasse
author_facet Jonathan Schanner
Roman Funke
Andreas Schubert
Alexander Hasse
author_sort Jonathan Schanner
collection DOAJ
description The coefficient of friction (COF) is an important parameter for mechanical engineers to consider when designing frictional connections. Previous work has shown that a surface microstructuring of the harder friction partner leads to a significant increase in the COF. However, the impact of the changes in the tribological system on the COF are not known in detail. In this study, the tribological influence factors such as the nominal surface pressure, the material pairing, lubrication, and the surface properties of the counterbody are investigated. Microstructuring is applied by turn-milling of an annular contact surface of cylindrical specimens. A torsional test bench is used to measure the torque depending on the displacement of the two specimens, thus enabling the determination of the COF. All tests with the microstructured specimens result in higher COF than the reference test with unstructured samples. The manufacturing process of the counterbody surface, the nominal surface pressure, and the materials in contact have a significant influence on the COF. While lubrication reduces friction in the case of unstructured specimens, the COF does not change significantly for microstructured samples. This proves that the deformative friction component dominates over the adhesive. Microstructuring the harder friction partner increases the transmittable torque in frictional connections and reduces the sensitivity towards possible contamination with lubricants.
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spelling doaj.art-229fc427bc58481fb6b4d9d8f064e5112023-11-24T15:53:52ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942022-11-016614310.3390/jmmp6060143Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence FactorsJonathan Schanner0Roman Funke1Andreas Schubert2Alexander Hasse3Machine Elements and Product Development, Chemnitz University of Technology, 09126 Chemnitz, GermanyMicromanufacturing Technology, Chemnitz University of Technology, 09126 Chemnitz, GermanyMicromanufacturing Technology, Chemnitz University of Technology, 09126 Chemnitz, GermanyMachine Elements and Product Development, Chemnitz University of Technology, 09126 Chemnitz, GermanyThe coefficient of friction (COF) is an important parameter for mechanical engineers to consider when designing frictional connections. Previous work has shown that a surface microstructuring of the harder friction partner leads to a significant increase in the COF. However, the impact of the changes in the tribological system on the COF are not known in detail. In this study, the tribological influence factors such as the nominal surface pressure, the material pairing, lubrication, and the surface properties of the counterbody are investigated. Microstructuring is applied by turn-milling of an annular contact surface of cylindrical specimens. A torsional test bench is used to measure the torque depending on the displacement of the two specimens, thus enabling the determination of the COF. All tests with the microstructured specimens result in higher COF than the reference test with unstructured samples. The manufacturing process of the counterbody surface, the nominal surface pressure, and the materials in contact have a significant influence on the COF. While lubrication reduces friction in the case of unstructured specimens, the COF does not change significantly for microstructured samples. This proves that the deformative friction component dominates over the adhesive. Microstructuring the harder friction partner increases the transmittable torque in frictional connections and reduces the sensitivity towards possible contamination with lubricants.https://www.mdpi.com/2504-4494/6/6/143coefficient of frictionfriction enhancementmicrostructuringstatic frictionturn-millingtribology
spellingShingle Jonathan Schanner
Roman Funke
Andreas Schubert
Alexander Hasse
Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors
Journal of Manufacturing and Materials Processing
coefficient of friction
friction enhancement
microstructuring
static friction
turn-milling
tribology
title Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors
title_full Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors
title_fullStr Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors
title_full_unstemmed Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors
title_short Investigating the Friction Behavior of Turn-Milled High Friction Surface Microstructures under Different Tribological Influence Factors
title_sort investigating the friction behavior of turn milled high friction surface microstructures under different tribological influence factors
topic coefficient of friction
friction enhancement
microstructuring
static friction
turn-milling
tribology
url https://www.mdpi.com/2504-4494/6/6/143
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AT romanfunke investigatingthefrictionbehaviorofturnmilledhighfrictionsurfacemicrostructuresunderdifferenttribologicalinfluencefactors
AT andreasschubert investigatingthefrictionbehaviorofturnmilledhighfrictionsurfacemicrostructuresunderdifferenttribologicalinfluencefactors
AT alexanderhasse investigatingthefrictionbehaviorofturnmilledhighfrictionsurfacemicrostructuresunderdifferenttribologicalinfluencefactors