Hubert, C, Kubiak, KJ orcid.org/0000-0002-6571-2530, Bigerelle, M et al. (1 more author) (2014) Identification of Local Lubrication Regimes on Textured Surfaces by 3D Roughness Curvature Radius. In: Groche, P, (ed.) Advanced Materials Research. ICTMP 2014: 6th International Conference on Tribology in Manufacturing Processes & Joining by Plastic Deformation, 22-24 Jun 2014, Darmstadt, Germany. Trans Tech Publications , pp. 120-125. ISBN 978-3-03835-127-6
Abstract
This paper proposes a new method of 3D roughness peaks curvature radius calculation and its application to tribological contact analysis as a characteristic signature of tribological contact. This method is introduced through the classical approach of calculation of radius of asperity in 2D. Actually, the proposed approach provides a generalization of Nowicki's method [], depending on horizontal lines intercepting the studied profile. Here, the basic idea consists in intercepting the rough surface by a horizontal plane and to calculate the cross section area without including “islands into islands”, i.e. the small peaks enclosed in bigger ones. Then, taking into account the maximal value of the height amplitude of the roughness included into this area, an appropriate algorithm is proposed, without requiring the classical hypothesis of derivability, which may be unstable when applied to engineering surfaces. This methodology is validated on simulated surfaces, and applied to engineering surfaces created experimentally, with a laboratory aluminium strip drawing process. The regions of the textured and lubricated specimens surface are analysed, and the results gives interesting prospects to qualitatively identify the local lubrication regimes: regions with high curvature radii correspond to severe contact (boundary/mixed lubrication regime) while regions with low curvature radii correspond to hydrodynamic lubrication regime.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Editors: |
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Keywords: | Drawing; Lubrication; Roughness; Texturation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Sep 2018 08:49 |
Last Modified: | 05 Sep 2018 08:49 |
Status: | Published |
Publisher: | Trans Tech Publications |
Identification Number: | 10.4028/www.scientific.net/AMR.966-967.120 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:134677 |