Application of 3D Roughness Parameters for Wear Intensity Calculations

Abstract

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 material volume Vm at specific relative levels γ were performed. The next step was an additional analysis of the distribution of surface ordinates using a theoretical and experimental Laplace function. The given check confirmed that for mostly surfaces with irregular roughness the ordinate distribution corresponds to the normal Gaussian distribution law, but in cases when the asymmetry of the ordinate distribution function goes outside the permissible limits (|∆Ssk|> 10%), errors> 10 % occur. On this basis, the mathematical formula of the material volume Vm was derived, and the obtained calculations were compared with the measured values. The results showed that the calculated values of the parameter Vm were very close to the experimental data (|∆Vm|<10 %), while at the relative level γ=+3, errors occurred that was related to the deviation from the normal distribution law. It was concluded that the given parameter could be used in the calculations of linear wear intensity, knowing the relative level γ.

A gyémántszerszámos vasalás 3D-s felületi érdességre gyakorolt hatásának vizsgálata

“…A felületi érdesség és annak vizsgálata mindig is fontos szerepet játszott a műszaki, mérnöki területeken, mivel az közvetlenül befolyásolja a korrózió-és kopásállóságot, a hűtő-kenő folyadék megtartását, a csúszásgátló jellemzőket, mindezek által a gépelem élettartamát (Bulaha et al, 2016;Bulaha et al, 2021;Blawucki and Zaleski, 2015;Deltombe et al, 2014). A felületvasalás egyike azoknak a hideg képlékeny befejező megmunkálásoknak, amely biztosítja az alkatrész előírt méretét és alakhelyességét, miközben csökkenti a felületi érdességet, növeli a mikro-keménységet, javítja az alakhelyességet és kedvező nyomó maradó feszültséget okoz a felszínközeli rétegben (Kluz et al, 2021; Jerez-Mesa et al, 2020; Lluma et al, 2020;Basak et al, 2019).…”

Calculation of Wear of Metallic Surfaces Using Material’s Fatigue Model and 3D Texture Parameters

“…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.…”