The SKF University Technological Centre for Grease Lubrication at the University of Twente has an opening for a PhD candidate. The goal of this 4-year project is to measure and model film thickness in grease lubricated cylindrical roller bearings. This requires a thorough understanding of Elasto-Hydrodynamic Lubrication (EHL), thin film lubrication properties of oils, and grease lubrication mechanisms. The overall result is a semi-empirical model for predicting film thickness in cylindrical roller bearings for various greases, under various conditions. This project is executed in close collaboration with SKF, a leading global bearing manufacturer, and Shell, a leading global base stock and lubricant manufacturer.
The Challenge
Bearings are the most widespread machine elements after nuts and bolts. There are more than 50 billion bearings operating in the world at any time. 80-90% of bearings are grease lubricated. The reliability or life of a grease lubricated bearing is dominated by the quality of the lubricating film that separates the rolling elements (balls or rollers) from the rings. The quality of the film is determined by its thickness and lubricity. The film thickness determines the contact intensity from the stresses caused by asperity interaction. Grease lubrication mechanisms can be complex. Unlike oil lubrication in which the contacts are fully flooded, grease lubricated contacts are often starved (with no lubricant in some regions of the contact). Severe starvation can lead to parched lubrication. The challenge here includes developing a consistent model and practical methodology for determining film thickness in cylindrical roller bearings (CRBs).
You will:
- study lubrication mechanisms in grease lubricated roller bearings;
- study grease churning and bleed behavior in a roller bearing;
- design an experimental test set-up for film thickness measurements;
- measure film thickness in cylindrical roller bearings under various operating conditions;
- further develop a film thickness model for cylindrical roller bearings;
- closely collaborate with your research team colleagues at the University of Twente;
- finish your research with a PhD thesis and publish your work in academic journals and at conferences.
Similar Positions
-
Ph D Position In Magnetic Metamaterials, European Magnetism Association EMA, Iceland, 9 days ago
Description of the offer : The University of Iceland seeks applicants for a PhD student position within the field of magnetic metamaterials. The position is funded for three years by the Icelandic...
-
Grant Position (Call Bando N. Br Imm01/2024/Bo), CONSIGLIO NAZIONALE DELLE RICERCHE, Italy, 22 days ago
2 Apr 2024 Job Information Organisation/Company CONSIGLIO NAZIONALE DELLE RICERCHE Department Sede di Bologna Research Field Physics » Condensed matter properties Chemistry » Physical chemistry En...
-
Ph D Position In Stretchable Organic Electronics, Lodz University of Technology, Poland, 2 days ago
22 Apr 2024 Job Information Organisation/Company Lodz University of Technology Department Molecular Physics Research Field Physics » Solid state physics Chemistry » Physical chemistry Other Resear...
-
Ph D Position In Visual Anthropology, Universität Wien, Austria, 6 days ago
18 Apr 2024 Job Information Organisation/Company Universität Wien Research Field History » History of social sciences Researcher Profile First Stage Researcher (R1) Country Austria Application Dea...
-
Ph D Position – Transient Spectroscopy Of Halide Perovskites For Photovoltaics, Helmholtz, Germany, about 4 hours ago
Your Job: Transient photoluminescence measurements of halide perovskite films, layer stacks and devices Simulations of transient photoluminescence and generation of training data Training of neura...
-
Ph D Scholarship In Integrated Blue Optical Phased Array On Thin Film Lithium Niobate Platform For Underwater Optical Communication Dtu Electro, Technical University of Denmark, Denmark, about 17 hours ago
Skip to main content. Profile Sign Out View More Jobs PhD scholarship in integrated blue optical phased array on thin-film lithium niobate platform for underwater optical communication - DTU Elect...