Stark, Tobias ; Kiedrowski, Thomas ; Marschall, Holger ; Lasagni, Andrés Fabián (2023)
Avoiding Starvation in Tribocontact Through Active Lubricant Transport in Laser Textured Surfaces.
In: Lubricants, 2019, 7 (6)
doi: 10.26083/tuprints-00017168
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Laser texturing is a viable tool to enhance the tribological performance of surfaces. Especially textures created with Direct Laser Interference Patterning (DLIP) show outstanding improvement in terms of reduction of coefficient of friction (COF) as well as the extension of oil film lifetime. However, since DLIP textures have a limited depth, they can be quickly damaged, especially within the tribocontact area, where wear occurs. This study aims at elucidating the fluid dynamical behavior of the lubricant in the surroundings of the tribocontact where channel-like surface textures are left after the abrasion wear inside the tribocontact area. In a first step, numerical investigations of lubricant wetting phenomena are performed applying OpenFOAM®. The results show that narrow channels (width of 10 μm) allow higher spreading than wide channels (width of 30 μm). In a second step, fluid transport inside DLIP textures is investigated experimentally. The results show an anisotropic spreading with the spreading velocity dependent on the period and depth of the laser textures. A mechanism is introduced for how lubricant can be transported out of the channels into the tribocontact. The main conclusion of this study is that active lubricant transport in laser textured surfaces can avoid starvation in the tribocontact.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Stark, Tobias ; Kiedrowski, Thomas ; Marschall, Holger ; Lasagni, Andrés Fabián |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Avoiding Starvation in Tribocontact Through Active Lubricant Transport in Laser Textured Surfaces |
| Sprache: | Englisch |
| Publikationsjahr: | 20 November 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2019 |
| Ort der Erstveröffentlichung: | Basel |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Lubricants |
| Jahrgang/Volume einer Zeitschrift: | 7 |
| (Heft-)Nummer: | 6 |
| Kollation: | 18 Seiten |
| DOI: | 10.26083/tuprints-00017168 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/17168 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Laser texturing is a viable tool to enhance the tribological performance of surfaces. Especially textures created with Direct Laser Interference Patterning (DLIP) show outstanding improvement in terms of reduction of coefficient of friction (COF) as well as the extension of oil film lifetime. However, since DLIP textures have a limited depth, they can be quickly damaged, especially within the tribocontact area, where wear occurs. This study aims at elucidating the fluid dynamical behavior of the lubricant in the surroundings of the tribocontact where channel-like surface textures are left after the abrasion wear inside the tribocontact area. In a first step, numerical investigations of lubricant wetting phenomena are performed applying OpenFOAM®. The results show that narrow channels (width of 10 μm) allow higher spreading than wide channels (width of 30 μm). In a second step, fluid transport inside DLIP textures is investigated experimentally. The results show an anisotropic spreading with the spreading velocity dependent on the period and depth of the laser textures. A mechanism is introduced for how lubricant can be transported out of the channels into the tribocontact. The main conclusion of this study is that active lubricant transport in laser textured surfaces can avoid starvation in the tribocontact. |
| Freie Schlagworte: | stribeck curve, lubricant transport, laser surface texturing, direct laser interference patterning, phase-field method |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-171687 |
| Zusätzliche Informationen: | This article belongs to the Special Issue Laser-Induced Periodic Surface Nano- and Microstructures for Tribological Applications |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 510 Mathematik 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik |
| Fachbereich(e)/-gebiet(e): | 04 Fachbereich Mathematik 04 Fachbereich Mathematik > Analysis 04 Fachbereich Mathematik > Analysis > Mathematische Modellierung und Analysis |
| Hinterlegungsdatum: | 20 Nov 2023 10:00 |
| Letzte Änderung: | 27 Nov 2023 11:22 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Avoiding Starvation in Tribocontact Through Active Lubricant Transport in Laser Textured Surfaces. (deposited 20 Nov 2023 10:00) [Gegenwärtig angezeigt]
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