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In this paper, calculations of 3D parameter Vm (material volume) of surfaces with irregular roughness and comparison with experimental data were performed, with further application of this parameter in calculations of wear intensity. First, using Mountains Map software for profilometric measurements, 3D roughness processing and determination of mat...
Context in source publication
Context 1
... knowing the output calculation data: roughness parameters, physicalmechanical, friction-fatigue and constructive characteristics of friction pair materials, it is possible to calculate the linear wear intensity according to Eq. (9). In this study, wear calculations for a lathe friction pair guide-table (Fig. 7) were made. Table 4 summarises the data on the material characteristics of the friction pair, as well as tabulated values of different coefficients. In this example, the wear intensity was calculated for the sliding guide -the part that absorbs the load during contact. In turn, the total elastic constant of the contact is equal ...
Citations
... It should be noted that this has had a significant impact on the approach to further manufacturing and scientific research, allowing the accuracy and quality of the results to be improved, as well as providing wide opportunities at a fundamental science level to integrate the new parameters into the processing and analysis of research. Studies by several researchers [18][19][20][21] show that surface texture (3D) parameters provide more detailed information about the real surface topography than profile parameters, allowing to process research results with greater accuracy, which is also an essential prerequisite for this research. Based on the above, the 3D texture parameters necessary to define a rough surface are integrated into the surface contact model discussed below and applied to the wear analytical calculations to obtain more accurate and realistic calculation results. ...
Today, when it comes to manufacturing parts and components for various mechanisms, the tendency is to use both approaches – the latest technologies and new material combinations- to achieve a longer product's lifetime. That is why the issue of machine parts' working capacity criteria, one of the most important of which is wear and its prediction, remains vitally important. Having studied the prediction theories of the wear process that have been developed over time, one can state that each has shortcomings that might strongly impair the results, thus making unnecessary theoretical calculations. Also, predicting wear based on lengthy, time-consuming, costly experiments is still prevalent. The article discusses a new wear calculation model, which is based on the application of theories from several branches of science. This model considers the surface texture (3D) parameters' values in modelling the surface's micro-topography with the random field theory while the friction surfaces' destruction – with the fatigue theory. The new wear calculation model is synthesised based on a developed friction surface contact model, providing a more complete surface description, which is essential for wear calculation and gives more accurate results. The proposed new wear calculation formula includes parameters that can be easily determined using modern measurement methods, thus speeding up the product design process and significantly contributing to sustainable development. Experimental studies on the steel-bronze sliding friction pair validated the analytical wear calculations' results.
