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Titel: Evolution of the True Contact Area of Laser Textured Tungsten Under Dry Sliding Conditions
VerfasserIn: Lechthaler, Björn
Ochs, Georg
Mücklich, Frank
Dienwiebel, Martin
Sprache: Englisch
Titel: Frontiers in Mechanical Engineering
Bandnummer: 5
Verlag/Plattform: Frontiers
Erscheinungsjahr: 2019
Freie Schlagwörter: direct laser interference patterning
dry friction
in-situ tribometer
real contact area
asperity contacts
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Despite the great importance of the real contact area, it is a parameter which, depending on the tribological system, is difficult or impossible to obtain experimentally. In this work, a combination of methods was used to estimate the development of the real contact surface, and the results were compared with the friction coefficient course. The measurements were carried out with a home-built in situ tribometer, which records a 3D image of the surface after each individual friction cycle. A tungsten sample was treated by laser interference with a line-like pattern to produce a deterministic surface. This allowed for more precise tracking of the real contact area when combined with the use of an inert corundum sphere as a counter-body. The real contact area was calculated numerically from the height information obtained using a contact application. Finally, the true contact surface was compared with the parallel-recorded friction values. After a short running-in phase, the friction behavior and the real contact surface showed comparable courses. This indicates that the changes in the real contact area could explain the friction behavior of the laser-patterned sample, and the methodology was proven to be suitable for experimentally estimating the real contact area.
DOI der Erstveröffentlichung: 10.3389/fmech.2019.00003
URL der Erstveröffentlichung: https://www.frontiersin.org/articles/10.3389/fmech.2019.00003
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-401269
hdl:20.500.11880/36120
http://dx.doi.org/10.22028/D291-40126
ISSN: 2297-3079
Datum des Eintrags: 17-Jul-2023
Bezeichnung des in Beziehung stehenden Objekts: Supplementary Material
In Beziehung stehendes Objekt: https://www.frontiersin.org/articles/file/downloadfile/434845_supplementary-materials_datasheets_1_docx/octet-stream/Data%20Sheet%201.docx/2/434845
https://www.frontiersin.org/articles/file/downloadfile/434845_supplementary-materials_datasheets_1_zip/octet-stream/Data%20Sheet%201.zip/2/434845
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Materialwissenschaft und Werkstofftechnik
Professur: NT - Prof. Dr. Frank Mücklich
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons Creative Commons