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Professorship Machine Elements and Product Development
Professorship MP

News

Education despite crisis successful

24.06.2020

The Professorship of Machine Elements and Product Development is pleased to announce that the teaching this semester is going on successfully despite the corona virus and the resulting closure of the university. In addition to the practice and lecture materials, as well as tests on the OPAL learning platform for the courses Construction Theory I and Construction Theory II, there are also detailed teaching videos for thebasic and advanced CAD courses. To enable students to communicate with the lecturers, video conferences are also held regularly using the BigBlueButton conference system. Your lecturer will tell you when the video conferences are taking place and how you can participate in them.
We will continue our efforts to make this difficult time as smooth as possible for the students so that they can continue their studies successfully.

Expansion of the testing area and development of new test benches

12.06.2020

New projects require new testing devices and more space in the testing area of the professorship. Besides the ongoing optimization of test procedures, several test benches are currently being developed. On the one hand, the dynamic wear tests are to be extended with the help of a wear test rig, which is based on the principle of the existing friction block test rig. On the other hand, investigations are planned on a new device for rolling bearing ring creep. This will allow a targeted deformation of the bearing outer ring under a radial load that varies over time. In addition, a further friction coefficient test rig is to be built in order to be able to cover an even wider range of material pairings in the determination of friction coefficients. The test area obtained for this purpose will now be filled one by one, opening up new possibilities for our team in experimental research.

Strengthened through the crisis

07.05.2020

The Chair of Machine Elements and Product Development can look forward to a strengthened and positive future. We are therefore pleased that the long-standing student assistants Jonathan Schanner M.Sc., Stephan Busch M. Sc. and Loc Le Duc M. Sc. have been able to defend their master’s theses and thus successfully complete their studies despite adverse circumstances. Fortunately, we were able to convince the three of them to continue to work for us as members of our professorship even after their graduation from the TU. This way they can support the teams of tribology and strength calculation.

Professorship are at home office

19.03.2020

In recent days and weeks, the number of people infected with corona has risen sharply. In order to reduce the risk of spreading the infectious disease COVID-19, the entire professorship of Machine Elements and Product Development is working at home from 19th March 2020. The staff of the professorship can be contacted as usual by telephone and e-mail.

 

The professorship wish all persons which are concerned a lot of strength and health and requests all persons to follow the imposed measures of the government and the TU Chemnitz.

Research

Growing ecological and economic pressure leads to ever higher and more complex stresses in the development of plain bearings. The research at the institute is therefore primarily concerned with the investigation and development of alternative sliding materials and the influence of geometric deviations. The main focus of the investigations is the wear behavior under the most varied operating conditions (particles, mixed friction, hydrodynamics).
The permissible loads of selected WNV (tapered and cylindrical interference fit as well as feather key, knurled, polygonal joints, etc.) have been investigated primarily at IKAT for decades in the area of fatigue, fatigue and fatigue strength. The behavior under individual loads (bending, torsion) as well as combined dynamic loads is analysed.
In contact with various components, deformations in connection with the prevailing joint pressure initiate the damage process of friction fatigue (friction corrosion). Current research activities at the institute focus on basic research on the damage phenomenon of friction corrosion and pursue the objective of developing an impact-compliant calculation method.
While conventional mechanisms owe their deformability to the sliding or rolling interfaces in the joints, flexible mechanisms fulfill their function through elastic stretches in places that are deliberately designed to be flexible during design. This functional principle enables novel, shape-adaptive structures, which can be used, for example, in softrobotics or in variable-shape wings. The professorship focuses its research on optimization-based synthesis methods.
The strength tests focus on the tooth root load-bearing capacity of worm gear units. The challenge to numerical imaging lies in the complex geometry and the special material bronze.
The coefficient of static friction (also: coefficient of friction or coefficient of friction) is to be understood as a system variable with a multitude of influencing parameters. In order to use existing potentials in friction-locking connections (e.g. screw, flange, press-fit connections), an experimental investigation is indispensable. With the help of standardized test methods on model samples, a wide variety of tribological configurations are examined at the research centre with regard to their transmission behavior. A major field of research is the synthesis of new design/selection tools for friction-enhancing measures (e.g. micro/laser structures, hard particles, coatings) for static and dynamic load cases.

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