[{"department":[{"_id":"146"},{"_id":"9"}],"keyword":["Surfaces","Coatings and Films","Surfaces and Interfaces","Mechanical Engineering","Mechanics of Materials"],"type":"journal_article","date_created":"2024-03-20T08:38:12Z","abstract":[{"lang":"eng","text":"<jats:p>Lubricants play a central role in many technical applications, e.g. in bearings and gears as well as in machining processes. In such applications, lubricants are exposed to extreme conditions in the contact area. In lubrication gaps, the pressure can reach values up to 5 GPa. The thermophysical properties of lubricants, and in particular the viscosity, at such extreme conditions have an important influence on the friction and wear behavior of a tribosystem. Accordingly, reliable lubricant property models are a prerequisite for accurate tribological simulations, e.g. elastohydrodynamic lubrication (EHL) simulations. Presently, the vast majority of experimental thermophysical property data are only available up to 1 GPa. Thus, reliable and robust models with strong extrapolation capabilities to higher pressure are required. In this work, viscosity measurements of squalane in a temperature range be tween 20 °C and 100 °C and pressures up to 1 GPa were carried out. Based on that data, a physical model for the viscosity was developed. The model is built by combining a molecular-based equation of state with the so-called entropy scaling approach. Finally, we demonstrate how this fluid property model can be favorably integrated in an EHL simulation by an application programming interface (API). The novel hybrid modeling approach is promising for future applications.</jats:p>"}],"issue":"4-5","publication":"Tribologie und Schmierungstechnik","doi":"10.24053/tus-2023-0017","language":[{"iso":"eng"}],"intvolume":"        70","date_updated":"2024-03-20T08:39:44Z","publication_status":"published","author":[{"full_name":"Wingertszahn, Patrick","last_name":"Wingertszahn","first_name":"Patrick"},{"full_name":"Schmitt, Sebastian","last_name":"Schmitt","first_name":"Sebastian"},{"full_name":"Thielen, Stefan","last_name":"Thielen","first_name":"Stefan"},{"last_name":"Oehler","first_name":"Manuel","full_name":"Oehler, Manuel"},{"id":"97759","full_name":"Magyar, Balázs","last_name":"Magyar","first_name":"Balázs"},{"full_name":"Koch, Oliver","first_name":"Oliver","last_name":"Koch"},{"last_name":"Hasse","first_name":"Hans","full_name":"Hasse, Hans"},{"last_name":"Stephan","first_name":"Simon","full_name":"Stephan, Simon"}],"publication_identifier":{"issn":["0724-3472"]},"title":"Measurement, Modelling, and Appli cation of Lubricant Properties at Extreme Pressures","year":"2023","quality_controlled":"1","citation":{"apa":"Wingertszahn, P., Schmitt, S., Thielen, S., Oehler, M., Magyar, B., Koch, O., Hasse, H., &#38; Stephan, S. (2023). Measurement, Modelling, and Appli cation of Lubricant Properties at Extreme Pressures. <i>Tribologie Und Schmierungstechnik</i>, <i>70</i>(4–5), 5–12. <a href=\"https://doi.org/10.24053/tus-2023-0017\">https://doi.org/10.24053/tus-2023-0017</a>","ieee":"P. Wingertszahn <i>et al.</i>, “Measurement, Modelling, and Appli cation of Lubricant Properties at Extreme Pressures,” <i>Tribologie und Schmierungstechnik</i>, vol. 70, no. 4–5, pp. 5–12, 2023, doi: <a href=\"https://doi.org/10.24053/tus-2023-0017\">10.24053/tus-2023-0017</a>.","short":"P. Wingertszahn, S. Schmitt, S. Thielen, M. Oehler, B. Magyar, O. Koch, H. Hasse, S. Stephan, Tribologie Und Schmierungstechnik 70 (2023) 5–12.","chicago":"Wingertszahn, Patrick, Sebastian Schmitt, Stefan Thielen, Manuel Oehler, Balázs Magyar, Oliver Koch, Hans Hasse, and Simon Stephan. “Measurement, Modelling, and Appli Cation of Lubricant Properties at Extreme Pressures.” <i>Tribologie Und Schmierungstechnik</i> 70, no. 4–5 (2023): 5–12. <a href=\"https://doi.org/10.24053/tus-2023-0017\">https://doi.org/10.24053/tus-2023-0017</a>.","mla":"Wingertszahn, Patrick, et al. “Measurement, Modelling, and Appli Cation of Lubricant Properties at Extreme Pressures.” <i>Tribologie Und Schmierungstechnik</i>, vol. 70, no. 4–5, Narr Francke Attempto Verlag GmbH + Co. KG, 2023, pp. 5–12, doi:<a href=\"https://doi.org/10.24053/tus-2023-0017\">10.24053/tus-2023-0017</a>.","ama":"Wingertszahn P, Schmitt S, Thielen S, et al. Measurement, Modelling, and Appli cation of Lubricant Properties at Extreme Pressures. <i>Tribologie und Schmierungstechnik</i>. 2023;70(4-5):5-12. doi:<a href=\"https://doi.org/10.24053/tus-2023-0017\">10.24053/tus-2023-0017</a>","bibtex":"@article{Wingertszahn_Schmitt_Thielen_Oehler_Magyar_Koch_Hasse_Stephan_2023, title={Measurement, Modelling, and Appli cation of Lubricant Properties at Extreme Pressures}, volume={70}, DOI={<a href=\"https://doi.org/10.24053/tus-2023-0017\">10.24053/tus-2023-0017</a>}, number={4–5}, journal={Tribologie und Schmierungstechnik}, publisher={Narr Francke Attempto Verlag GmbH + Co. KG}, author={Wingertszahn, Patrick and Schmitt, Sebastian and Thielen, Stefan and Oehler, Manuel and Magyar, Balázs and Koch, Oliver and Hasse, Hans and Stephan, Simon}, year={2023}, pages={5–12} }"},"volume":70,"user_id":"97759","_id":"52657","publisher":"Narr Francke Attempto Verlag GmbH + Co. KG","page":"5-12","status":"public"},{"publication_identifier":{"issn":["0724-3472"]},"author":[{"full_name":"Keßler, A","last_name":"Keßler","first_name":"A"},{"full_name":"Elkenkamp, P","last_name":"Elkenkamp","first_name":"P"},{"id":"97759","last_name":"Magyar","first_name":"Balázs","full_name":"Magyar, Balázs"},{"full_name":"Mayer, C","last_name":"Mayer","first_name":"C"}],"year":"2020","status":"public","title":"Beurteilung der Leistungsfähigkeit von Schmierstoffen mittels eines FZG Prüfstandes","intvolume":"        67","date_updated":"2023-01-04T09:22:33Z","language":[{"iso":"eng"}],"_id":"35193","page":"23-28","volume":67,"user_id":"38077","citation":{"chicago":"Keßler, A, P Elkenkamp, Balázs Magyar, and C Mayer. “Beurteilung Der Leistungsfähigkeit von Schmierstoffen Mittels Eines FZG Prüfstandes.” <i>Tribologie Und Schmierungstechnik</i> 67, no. 2 (2020): 23–28.","short":"A. Keßler, P. Elkenkamp, B. Magyar, C. Mayer, Tribologie Und Schmierungstechnik 67 (2020) 23–28.","apa":"Keßler, A., Elkenkamp, P., Magyar, B., &#38; Mayer, C. (2020). Beurteilung der Leistungsfähigkeit von Schmierstoffen mittels eines FZG Prüfstandes. <i>Tribologie Und Schmierungstechnik</i>, <i>67</i>(2), 23–28.","ieee":"A. Keßler, P. Elkenkamp, B. Magyar, and C. Mayer, “Beurteilung der Leistungsfähigkeit von Schmierstoffen mittels eines FZG Prüfstandes,” <i>Tribologie und Schmierungstechnik</i>, vol. 67, no. 2, pp. 23–28, 2020.","ama":"Keßler A, Elkenkamp P, Magyar B, Mayer C. Beurteilung der Leistungsfähigkeit von Schmierstoffen mittels eines FZG Prüfstandes. <i>Tribologie und Schmierungstechnik</i>. 2020;67(2):23-28.","bibtex":"@article{Keßler_Elkenkamp_Magyar_Mayer_2020, title={Beurteilung der Leistungsfähigkeit von Schmierstoffen mittels eines FZG Prüfstandes}, volume={67}, number={2}, journal={Tribologie und Schmierungstechnik}, author={Keßler, A and Elkenkamp, P and Magyar, Balázs and Mayer, C}, year={2020}, pages={23–28} }","mla":"Keßler, A., et al. “Beurteilung Der Leistungsfähigkeit von Schmierstoffen Mittels Eines FZG Prüfstandes.” <i>Tribologie Und Schmierungstechnik</i>, vol. 67, no. 2, 2020, pp. 23–28."},"issue":"2","publication":"Tribologie und Schmierungstechnik","extern":"1","date_created":"2023-01-04T09:22:15Z","department":[{"_id":"146"}],"type":"journal_article"},{"extern":"1","abstract":[{"lang":"ger","text":"Diese Untersuchung befasst sich mit dem in der Praxis häufig auftretenden, riefenförmigen Verschleiß gehärteter Wellen im Dichtkontakt mit Radialwellendichtringen (RWDR) aus Fluorkautschuk (FKM). Ziel ist es, die Verschleißmechanismen an einer gehärteten Stahlwelle im geschmierten tribologischen Kontakt mit einem elastomeren FKM-Radialwellendichtring anhand experimenteller Modellsysteme aufzuklären. Weiterhin wird die Wechselwirkung des Dichtringverschleißes und Wellenverschleißes aufgrund der sich ständig verändernden Oberflächenmorphologie der Kontaktpartner oberflächenanalytisch charakterisiert. Das entstandene Schadensbild kann simulativ nachgestellt werden und zeigt eine gute Übereinstimmung mit dem tribologischen Experiment."}],"issue":"4-5","publication":"Tribologie und Schmierungstechnik","keyword":["nanoindentation"],"type":"journal_article","department":[{"_id":"146"}],"date_created":"2022-12-15T09:17:37Z","date_updated":"2022-12-15T09:22:18Z","intvolume":"        66","year":"2019","title":"Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem","publication_identifier":{"issn":["0724-3472"]},"author":[{"last_name":"Burkhart","first_name":"Christoph","full_name":"Burkhart, Christoph"},{"full_name":"Emrich, Stefan","last_name":"Emrich","first_name":"Stefan"},{"first_name":"Balázs","last_name":"Magyar","full_name":"Magyar, Balázs","id":"97759"},{"full_name":"Kopnarski, Michael","last_name":"Kopnarski","first_name":"Michael"},{"full_name":"Sauer, Bernd","last_name":"Sauer","first_name":"Bernd"}],"doi":"10.30419/TuS-2019-0019","language":[{"iso":"ger"}],"citation":{"chicago":"Burkhart, Christoph, Stefan Emrich, Balázs Magyar, Michael Kopnarski, and Bernd Sauer. “Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem.” <i>Tribologie und Schmierungstechnik</i> 66, no. 4–5 (2019): 9–18. <a href=\"https://doi.org/10.30419/TuS-2019-0019\">https://doi.org/10.30419/TuS-2019-0019</a>.","short":"C. Burkhart, S. Emrich, B. Magyar, M. Kopnarski, B. Sauer, Tribologie und Schmierungstechnik 66 (2019) 9–18.","ama":"Burkhart C, Emrich S, Magyar B, Kopnarski M, Sauer B. Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem. <i>Tribologie und Schmierungstechnik</i>. 2019;66(4-5):9–18. doi:<a href=\"https://doi.org/10.30419/TuS-2019-0019\">10.30419/TuS-2019-0019</a>","bibtex":"@article{Burkhart_Emrich_Magyar_Kopnarski_Sauer_2019, title={Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem}, volume={66}, DOI={<a href=\"https://doi.org/10.30419/TuS-2019-0019\">10.30419/TuS-2019-0019</a>}, number={4–5}, journal={Tribologie und Schmierungstechnik}, author={Burkhart, Christoph and Emrich, Stefan and Magyar, Balázs and Kopnarski, Michael and Sauer, Bernd}, year={2019}, pages={9–18} }","mla":"Burkhart, Christoph, et al. “Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem.” <i>Tribologie und Schmierungstechnik</i>, vol. 66, no. 4–5, 2019, pp. 9–18, doi:<a href=\"https://doi.org/10.30419/TuS-2019-0019\">10.30419/TuS-2019-0019</a>.","apa":"Burkhart, C., Emrich, S., Magyar, B., Kopnarski, M., &#38; Sauer, B. (2019). Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem. <i>Tribologie und Schmierungstechnik</i>, <i>66</i>(4–5), 9–18. <a href=\"https://doi.org/10.30419/TuS-2019-0019\">https://doi.org/10.30419/TuS-2019-0019</a>","ieee":"C. Burkhart, S. Emrich, B. Magyar, M. Kopnarski, and B. Sauer, “Nachbildung und Analyse von Schadensmechanismen bei Dichtringen im tribologischen Ersatzsystem,” <i>Tribologie und Schmierungstechnik</i>, vol. 66, no. 4–5, pp. 9–18, 2019, doi: <a href=\"https://doi.org/10.30419/TuS-2019-0019\">10.30419/TuS-2019-0019</a>."},"status":"public","user_id":"38077","volume":66,"page":"9–18","_id":"34432"}]