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Tribological properties of plastics in model tests and component tests

The service life of machine parts made of plastics that are exposed to a relative movement and work without lubrication is limited by wear processes. For the guaranteed function of completely assembled unit a sufficiently accurate estimation of wear and therewith of the service life of machine parts is of high importance. Because friction and wear are system properties a general description and tribological characteristic of a plastic material is difficult. Therefore tribological investigations are offen restricted to tests in model systems.

Especially the selection of suitable materials for a given task is often based on results coming out of model tests, because the influence of the great variety of additionals and strengthening substances on the behaviour of the compound can only be determined by comparing relatively cheep model systems.

Beyond it the characteristic of processes on the machine part itself gives save knowledge for estimating service life. An important part plays the calculation of surface temperature. To fix the permissible load in a sufficiently accurate way, the surface temperature of cog wheels should be determined depending on geometry and material. Based upon model system investigations it is possible to define efficient load limits for cog wheels.

Lesen Sie die deutsche Zusammenfassung auf Kunststoffe.de
Author

Peter Faatz
Lehrstuhl für Kunststofftechnik (LKT)
Universität Erlangen-Nürnberg

Information

Free keywords: plastic, wear, friction, cog wheel, load limits
Institute / chair: Technischen Fakultät der Universität Erlangen-Nürnberg
Language: German
Technical consultant for expert services: Prof. Dr.-Ing. Dr. h. c. G. W. Ehrenstein, Prof. Dr.-Ing. H. Meerkamm
Publication year: 2002
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

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