Project detail

The study of fatigue lailure of elestohydrodynamically lubricated constants due to debris denting

Duration: 01.01.2003 — 31.12.2005

Funding resources

Czech Science Foundation - Standardní projekty

- part funder (2003-01-01 - 2005-12-31)

On the project

Experimentální a numerické studium únavového poškozování elastohydrodynamicky mazaných třecích povrchů

Description in English
The proposed project is aimed at the experimental and numerical study of surface initiated rolling contact fatigue (RCF) due to the passage of dents in elastohydrodynamically (EHL) lubricated contacts. The main goal is to provide damage tolerant bearingsteel that can help rolling bearings to survive in debris contaminated lubrication or endure debris damage without suffering serious life reduction. The thin film colorimetric interferometry (TFCI) measurement technique and finite element modelling (FEM)will be used for the study of influence of dent geometry (e.g. size and location), operating conditions (e.g. rolling speed, slide-to-roll ratio and load) and steel composition (e.g. retained austenite) on: - elastohydrodynamic film thickness, - contactpressure, - subsurface stresses, - fatigue life reduction. Obtained results will enable to find a quantitative relationship between all above-mentioned factors with the view to propose empirical life reduction model.

Mark

GA101/03/0525

Default language

Czech

People responsible

Hartl Martin, prof. Ing., Ph.D. - principal person responsible

Units

Institute of Machine and Industrial Design
- beneficiary (2003-01-01 - 2005-12-31)

Results

KŘUPKA, I., HARTL, M., LIŠKA, M. Experimental Study of Real Roughness Features within EHD Point Contacts. In Proceedings of the 3rd World Tribology Congress. Washington, USA: ASME, 2005. p. 1 ( p.)
Detail

KŘUPKA, I., HARTL, M. Behaviour of Roughness Features Passing Through EHD Point Contact. In COST 532 Conference. Porto: 2005. p. 45 ( p.)ISBN: 972-8953-01-1.
Detail

HARTL, M. Numerical Solution of EHL Point Contact with Single Real Dent and Comparison with Experimental Measurement. In Book of Synopses ITC. Tokyo: 2005. p. 343 ( p.)ISBN: 4-9900139-7-2.
Detail

KŘUPKA, I. The influence of slide-to-roll ratio on lubricant film thickness distribution in the vicinity of real roughness features passing through EHD point contact. In 31st Leeds-Lyon Symposium on Tribology. 2005. p. 57 ( p.)ISBN: 0-444-51687-5.
Detail

HARTL, M., LIŠKA, M. Direct observation of the behaviour of the real surface roughness passing through EHD point contact. In Transient Processes in Tribology, 43. Holandsko: Elsevier, 2004. p. 419 ( p.)ISBN: 0-444-51706-5.
Detail

KŘUPKA, I., HARTL, M., LIŠKA, M. Experimental Study of Real Asperities Behaviour within Lubricated Contacts. In Tribology and Lubrication Engineering. Esslingen: Technische Akademie Esslingen, 2004. p. 1681 ( p.)ISBN: 3-924813-54-X.
Detail

KŘUPKA, I., HARTL, M., LIŠKA, M. Some insights into lubricant film thickness in mixed EHD point contact. In Tribology research and design for engineering systems. Tribology series 41. Amsterdam: Elsevier, 2003. p. 549-558. ISBN: 0-444-51243-8.
Detail

KŘUPKA, I.; HARTL, M.; URBANEC, L.; ČERMÁK, J. Single dent behaviour within EHD lubricated contacts - comparison between experimental and numerical results. In Proceedings of ASIATRIB 2006. Tokyo: Japanese Society of Tribologists, 2006. p. 193-194. ISBN: 4-9900139-8-0.
Detail

KŘUPKA, I.; HARTL, M. EHL film thickness behaviour under high pressure - comparison between numerical and experimental results. In Proceedings of the IUTAM Symposium on Elastohydrodynamics and Microelastohydrodynamics. Cardiff: Springer, 2006. p. 217-228. ISBN: 1-4020-4532-8.
Detail

HARTL, M., LIŠKA, M. Experimental study of elastohydrodynamically lubricated elliptic contact. 2003, vol. 1, no. 1, p. 26 ( p.)
Detail

LIŠKA, M., HARTL, M., FUIS, V. In situ studium smíšeného mazání reálných třecích povrchů optickými interferenčními metodami. 2003, roč. 48, č. 6, s. 181 ( s.)ISSN: 0447-6411.
Detail

HARTL, M., FUIS, V., LIŠKA, M. Experimental study of lubricant film thickness behavior in the vicinity of real asperities passing through lubricated contact. Tribology Transactions, 2004, vol. 47, no. 3, p. 376 ( p.)ISSN: 0569-8197.
Detail

VAVERKA, M.; VRBKA, M.; KŘUPKA, I.; HARTL, M. Influence of Dents on Friction Surfaces on Thin Lubrication Films. In 15th International Colloquium Tribology - Automotive and Industrial Lubrication. Esslingen, Ostfildern: Technische Akademie Esslingen, Ostfildern, 2006. p. 1-5. ISBN: 3-924813-62-0.
Detail

Responsibility: Hartl Martin, prof. Ing., Ph.D.