By Klaus Friedrich (Eds.)
A lot study has been conducted, and many growth has been made in the direction of using composite fabrics in a variety of tribological purposes. in recent times, reports were made to figure out to what measure phenomena governing the tribological functionality of composites should be generalized, and to consolidate interdisciplinary details for polymer-, steel- and ceramic matrix composites. the significance of selling higher wisdom within the parts of friction, lubrication and put on, usually, is established by means of the contents of the amount. It covers quite a lot of topics extending from primary study at the tribological features of varied multi-phase fabrics as much as ultimate functions of composites in put on loaded, technical elements. as well as the emphasis on composites tribology, the sensible element of the sector is usually reviewed through authors who're engaged in utilized examine in addition to these in additional educational actions. The articles during this quantity might be of price to either researchers and mechanical designers of their paintings in the direction of a collection of predictive, fabrics engineering-related versions for a extra trustworthy use of composites as tribo-materials. in the course of 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 feel, this article bargains a severe evaluate of the country of realizing of the foundations of tribology and its skill to serve the sensible and advertisement wishes of this expertise regularly, and especially within the context of composite structures
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Extra resources for Advances in Composite Tribology
This reveals that the deformation component of friction is influenced by the self-reinforcement. 6. Effects of fillers on the tribological properties Since the effects of fillers are already investigated by many authors, we will not discuss them in detail. Nevertheless, our own tests are necessary to obtain the comparable results, because the data from the literature differ very often from each other and the test conditions are not given completely. 7. Carbon fibres. The wear factor is strongly decreased by addition of carbon fibres (table 13).
2. New aspects of design of sliding elements The product of sliding velocity and normal load has been used to calculate the working life of sliding elements. The fundamentals for this calculation are: - a wear factor which is independent of the normal load, and - a wear factor which is independent of the sliding velocity. These are not definitely confirmed by the results of investigations. 1. Sliding velocity Both increasing and approximately constant wear factors with increasing sliding velocity were observed (fig.
1. Sliding directions Due to the oriented crystalline structures, the self-reinforced specimens have a highly pronounced anisotropy. Therefore, it is necessary to test the materials in defined sliding directions. The reference direction is the flow direction of the melt in which the crystalline structures are oriented. The sliding direction parallel to the flow direction is defined as the p-direction. The s (perpendicular) - and ap (antiparallel) - directions are defined analogously (fig. 21). 2.