Advances in Composite Tribology by Klaus Friedrich (Eds.)

By Klaus Friedrich (Eds.)

A lot learn has been performed, and many growth has been made in the direction of using composite fabrics in a variety of tribological functions. lately, reports were made to figure out to what measure phenomena governing the tribological functionality of composites may be generalized, and to consolidate interdisciplinary details for polymer-, steel- and ceramic matrix composites. the significance of marketing larger wisdom within the parts of friction, lubrication and put on, mostly, is proven through the contents of the amount. It covers quite a lot of topics extending from basic study at the tribological features of assorted multi-phase fabrics as much as ultimate purposes of composites in put on loaded, technical parts. as well as the emphasis on composites tribology, the sensible point of the sphere can also be reviewed by means of authors who're engaged in utilized learn in addition to these in additional educational actions. The articles during this quantity will be of price to either researchers and mechanical designers of their paintings in the direction of a suite of predictive, fabrics engineering-related versions for a extra trustworthy use of composites as tribo-materials. during the research and statement of the tribology of sensibly formulated composite platforms, a transparent and extra profound knowing of the topic of tribology might emerge. during this experience, this article bargains a severe review of the nation of knowing of the foundations of tribology and its skill to serve the sensible and advertisement wishes of this know-how regularly, and especially within the context of composite structures

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V. N. Dobycin and V S . Kombalov, Grundlagen der Berechnung von Reibung und VerschleiB ( V E B Verlag Technik, Berlin, 1982). G. Polzer and F. MeiBner, Grundlagen zu Reibung und VerschleiB ( V E B Deutscher Verlag fur Grundstoffindustrie, Leipzig, 1978). F. Moore, Principles and Applications of Tribology (Pergamon Press, Oxford, 1975). H. Lee, Effect of surface energetics on polymer friction and wear, in: Advances in Polymer Friction and Wear, ed. H. Lee (Plenum Press, New York, 1974) pp. 31-68.

The boundary between lubricant and reinforcing fillers is fluent. The wear of a low wear resistent material can be reduced by lubricant fillers because of lower friction. However, worse mechanical properties is often an accompanying effect, which is always a negative effect on a function-integrated design. For the reinforcing fillers this is also the case. They could both decrease and increase friction. Self-reinforcement enables the improve­ ment of tribological properties without the negative effects mentioned above.

According to eq. (8) the adhesion component of the friction coefficient decreases with increasing Young's modulus. According to eq. (11) the deformation component of the friction coefficient decreases with increasing Young's modulus as well. Therefore a strongly marked reduction of the friction coefficient is expected. The results show that the effect of self-reinforcement on the deforma­ tion component is obviously much more marked than that on the adhesion component. Two facts were observed (fig.

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