Bachelor / Master Thesis: Experimental Study of Laser-Polished Surfaces for Reducing Friction Losses

The Institute for Machine Elements and Systems Engineering researches the fundamental structural and tribological behavior of machine elements and represents this in experimentally validated model descriptions. These model descriptions are used to analyze and design the functional, loss, and noise behavior of entire technical systems with a focus on drive technology. The developed models also serve to research and develop methods of Model-Based Systems Engineering as a central element of future industrial product development processes.

Drive systems are optimized for efficiency. Surface roughness is a major factor in this regard, which is why the functional surfaces of machine components are treated using superfinishing. To reduce toxic components in the manufacturing process, the alternative, more energyefficient method of laser beam melting is being considered. However, the effects of the new surfaces on the performance of machine components are unknown.

Friction wastes energy. Laser polishing rounds off the roughness peaks and can cut friction losses in lubricated contacts, a step towards energyefficient drivetrains. In this thesis you put the high-tech laser process to the test: on a state-of-the-art MTM tribometer you measure Stribeck curves on ground and laser-polished steel discs.

Tasks:

• Stribeck tests on the MTM tribometer (ball-on-disc contact
• Assessing running-in and wear behaviour for different laser,polishing parameters
• Evaluation and documentation of results

Prerequisites:

• Independent and reliable working style
• Interest in drive technology and interdisciplinary issues

We offer:

• Currently relevant and future-oriented problem statement
• Flexible design of work focus areas
• Intensive supervision
• Prompt processing possibility and pleasant working environment
• Immediate start or by arrangement

We look forward to your application by email:

Benjamin Klinghart, M.Sc.
Institute for Machine Elements and Systems Engineering

Schinkelstraße 10, 52062 Aachen
Benjamin.Klinghart@imse.rwth-aachen.de