PhD Positions in Grease Lubrication Rolling Bearings Research

Job description

The SKF University Technology Centre for Grease Lubrication in the Department of Mechanics of Solids, Surfaces and Systems (MS3), part of the Faculty of Engineering Technology (ET), is seeking two highly motivated PhD students to investigate grease degradation and contamination mechanisms in rolling bearings, as well as grease distribution, mixing and flow in the bearing. The project is in collaboration with two major industrial partners and the outcome will facilitate the development of “smart” lubrication systems, increase the reliability of bearings, and support application engineering in lubrication strategies.

Rolling bearings are essential high-tech machine components of expensive and maintenance-sensitive equipment. Most rolling bearings are lubricated with grease, the latter often having a much shorter useful life. In industrial applications, such as large electric motors and wind turbines, bearings are re-lubricated at intervals, as a routine maintenance task. During re-lubrication, degraded and contaminated grease is partially replaced by fresh grease.

While re-lubrication reduces the effects of contamination, the result is usually a mixture of fresh and contaminated/degraded grease in the bearing. To optimally re-lubricate, it is vital to understand this mixing process. Currently, the scientific knowledge of re-lubrication is non-existent.

This project will build new knowledge on several key aspects of re-lubrication, including grease flow, mixing, contamination, and degradation. Research activities will include the development of experimentally validated physics-based models. The bearing will be modeled as thermo-dynamic open system in which different processes are simultaneously active, including the flow and mixing of grease as a complex semi-fluid, and grease degradation.

The candidates will work at the SKF University Technology Centre for Grease Lubrication within the Surface Technology and Tribology group at the University of Twente, an international and collaborative environment with strong expertise in tribology and grease lubrication. The group provides a stimulating research atmosphere with opportunities for interdisciplinary collaboration. The candidates will work together, planning and performing their research towards the project goal.

The candidates will provide research updates during progress meetings and in meetings with the project partners. The candidates are encouraged to present their work at scientific conferences and are expected to publish in peer-reviewed journals. The industrial partners will be actively involved in the project via discussions, analyses, and experiments.

• A master’s degree in Physics, Mechanical Engineering, or a related field with special interest in lubrication.
• A strong background and passion for research in tribology and fluid mechanics.
• Good organizational skills, enthusiastic, independent and a problem-solving attitude.
• You are curious and eager to learn, and thrive in a collaborative environment.
• The ability to work on real-world problems in an interdisciplinary and internationally oriented environment.
• Excellent written and verbal communication skills. Proficiency in English is required.

The university offers a stimulating scientific environment, excellent working conditions, and a dynamic ecosystem with enthusiastic colleagues in which internationalization is an important aspect of the strategic agenda. We offer:

• A four-year fulltime PhD position, with a qualifier exam after 6-9 months.
• A professional and personal development programme within Twente Graduate School.
• Gross monthly salary of €3.059,- in the first year that increases to €3.881,- in the fourth year.
• A holiday allowance of 8% of the gross annual salary and a year-end bonus of 8.3%.
• Excellent support for research and facilities for skill enhancement and personal growth.
• A solid pension scheme.
• A total of 41 holiday days per year in case of full-time employment.
• Excellent working conditions, an exciting scientific environment, and a green and lively campus.

To apply for these two PhD positions, please submit your…