Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Petr SPERKA"'
Publikováno v:
Lubricants, Vol 10, Iss 11, p 289 (2022)
This work focused on the experimental study of grease lubrication mechanisms around contacts in radial ball bearing 6314. The main objective of this work was to show the influence of conformities and their impact on grease lubrication in ball bearing
Externí odkaz:
https://doaj.org/article/c9062536c5de4c8b9d7beea71285178a
Publikováno v:
Proceedings on Engineering Sciences, Vol 1, Iss 1, Pp 550-554 (2019)
Rolling element bearings lubricated by greases represent the most used mechanical components in industry, thus the total volume of energy required to overcome their friction is enormous. Even small improvements can provide considerable savings. To re
Externí odkaz:
https://doaj.org/article/b3d74a9acd284981a7951367deaff4ba
Publikováno v:
Tribology Online, Vol 11, Iss 1, Pp 34-39 (2016)
This paper is focused on the roughness induced effects in EHL contact under high sliding conditions when thermal effects can be expected. High sliding conditions include both the case when both surfaces are moving in the same direction and that when
Externí odkaz:
https://doaj.org/article/132de4dfb50f4444804e91072aec512f
Publikováno v:
Lubricants, Vol 8, Iss 2, p 12 (2020)
This paper deals with an experimental study of film thickness and friction of commercial-grade grease and its base oil in a highly loaded contact. In-situ measurements were conducted for two surface textures on a ball-on-disc optical tribometer at th
Externí odkaz:
https://doaj.org/article/b169855d4a964591969d34528b9d39a0
Publikováno v:
Lubricants, Vol 6, Iss 4, p 101 (2018)
An understanding of mechanisms which are responsible for elastohydrodynamic lubricant film formation under high sliding conditions is necessary to increase durability of machine parts. This work combines thin-film colorimetric interferometry for lubr
Externí odkaz:
https://doaj.org/article/1d06f39ca1ab4ece8448f45e434ca6fc
Publikováno v:
Lubricants, Vol 6, Iss 3, p 80 (2018)
Prediction of minimum film thickness is often used in practice for calculation of film parameter to design machine operation in full film regime. It was reported several times that majority of prediction formulas cannot match experimental data in ter
Externí odkaz:
https://doaj.org/article/f522a637592444188beec24b952a2cc7
Publikováno v:
Manufacturing Technology. 22:724-732
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f80d0b200d544c32fc27aebbf2bcd16d
https://doi.org/10.21062/mft.2022.085
https://doi.org/10.21062/mft.2022.085
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 236:2477-2490
In the first paper of this series, a new formula for central film thickness of slender contacts has been proposed. In this paper, interferometry measurement of the film thickness in slender elliptic contacts is performed for comparison with film thic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d3dd40940bc02b921faba26dbe5e678
https://doi.org/10.1177/13506501221080289
https://doi.org/10.1177/13506501221080289
Autor:
Yiming Han, Petr Sperka, Jing Wang, Ivan Krupka, Martin Hartl, Weimin Li, Xiaobo Wang, Weimin Liu
Publikováno v:
Journal of Tribology. 145
The influence of the grease-water two-phase emulsion on the bearing tracks on the film formation has been studied by carrying out optical interferometry experiments on a ball disk test rig to observe the dynamic film-forming behavior of lubricating g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85f3c38ac2712091eb565fe72c31a27e
https://doi.org/10.1115/1.4056944
https://doi.org/10.1115/1.4056944
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 235:2616-2625
The interfaces of plastic components are often operated as self-lubricating or lubricated with greases close to the piezoviscous-elastic lubrication regime. However, current basic tribological knowledge about grease-lubricated compliant contacts is s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::705362d2879bcb577d060b26f356b4e7
https://doi.org/10.1177/13506501211053542
https://doi.org/10.1177/13506501211053542