Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Milan Omasta"'
Autor:
Václav Navrátil, Radovan Galas, Milan Klapka, Daniel Kvarda, Milan Omasta, Lubing Shi, Haohao Ding, Wen-Jian Wang, Ivan Křupka, Martin Hartl
Publikováno v:
Tribology in Industry, Vol 44, Iss 3, Pp 361-373 (2022)
This study aimed tofind an appropriate content of water-based friction modifier that will be able to reduce squeal noise without a significant impact on the coefficient of adhesion. A twin-disc machine was used, and the angle of attack of 4° simulat
Externí odkaz:
https://doaj.org/article/a15d94faef85430ab0a63c3cfd9c88cd
Publikováno v:
Applied Engineering Letters, Vol 7, Iss 1, Pp 10-16 (2022)
Wheel squeal noise research requires many repeatable experiments under controlled driving conditions. While it is difficult to control those conditions on the real track, test rigs are designed. For the experimental validation of the models descri
Externí odkaz:
https://doaj.org/article/16bd3391510f494bb0431661140e45f6
Autor:
Daniel Kvarda, Simon Skurka, Radovan Galas, Milan Omasta, Lu-bing Shi, Haohao Ding, Wen-jian Wang, Ivan Krupka, Martin Hartl
Publikováno v:
Engineering Science and Technology, an International Journal, Vol 35, Iss , Pp 101100- (2022)
The effect of top of rail lubricant composition on adhesion has been investigated using a laboratory ball-on-disc tribometer. Rheological properties were analysed using viscosimeter and high pressure torsion device. As a base medium, a biodegradable
Externí odkaz:
https://doaj.org/article/5a727fa3641640959f6717dc6982786a
Autor:
Martin Ebner, Milan Omasta, Thomas Lohner, Petr Šperka, Ivan Krupka, Martin Hartl, Klaus Michaelis, Bernd-Robert Höhn, Karsten Stahl
Publikováno v:
Lubricants, Vol 7, Iss 1, p 1 (2018)
Oil-impregnated open-pored sintered materials can be used to provide the intrinsic self-lubrication of tribological contacts. Although its general functionality was recently confirmed for highly-loaded contacts, detailed analyses on the local effects
Externí odkaz:
https://doaj.org/article/2fce84aafa31421fa351a45e166be96c
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:
Proceedings, Vol 2, Iss 16, p 1145 (2018)
The objective of this study was to investigate the influence of solid particles of talc in water contaminated wheel-rail contact. The main aim was to identify situations where low adhesion can occur and define properties that impact the drop of adhes
Externí odkaz:
https://doaj.org/article/2a1b65cedbcb4baaa6f2305a316601fb
Publikováno v:
Proceedings, Vol 2, Iss 16, p 1140 (2018)
Top-of-rail (TOR) lubricants represent modern approach for friction modification between wheel and rail. The main goal of this study was to investigate potential risks and benefits associated with the application of these products, especially in term
Externí odkaz:
https://doaj.org/article/2884f3ed04464677aeb52e39494c1366
Autor:
Milan Omasta, Sakdirat Kaewunruen
Publikováno v:
Proceedings, Vol 2, Iss 16, p 1138 (2018)
Social and economic growth, security and sustainability around the globe are at risk of being compromised due to aging and failing railway infrastructure systems. [...]
Externí odkaz:
https://doaj.org/article/b956315e3b8e4d6386c3dee832f4ad57
Autor:
Ivan Krupka, Wen-Jian Wang, Haohao Ding, Lubing Shi, Milan Omasta, Daniel Kvarda, Milan Klapka, Radovan Galas, Václav Navrátil, Martin Hartl
Publikováno v:
Tribology in Industry. 44:361-373
Autor:
Wenjian Wang, Shengjie Li, Haohao Ding, Qiang Lin, Radovan Galas, Milan Omasta, Enrico Meli, Jun Guo, Qiyue Liu
Publikováno v:
Wear. 523:204870