Ing.

Petr Šperka

Ph.D.

FSI, ÚK OT – odborný asistent

+420 54114 3323, +420 54114 3238
sperka@fme.vutbr.cz

Odeslat VUT zprávu

Ing. Petr Šperka, Ph.D.

Publikace

  • 2021

    SALAJKOVÁ, Z.; HOLÁ, M.; PROCHAZKA, D.; ONDRAČEK, J.; PAVLIŇÁK, D.; ČELKO, L.; GREGAR, F.; ŠPERKA, P.; POŘÍZKA, P.; KANICKÝ, V.; DE GIACOMO, A.; KAISER, J. Influence of sample surface topography on laser ablation process. Talanta, 2021, roč. 222, č. 121512, s. 1-9. ISSN: 0039-9140.
    Detail | WWW

  • 2020

    PROCHAZKA, D.; POŘÍZKA, P.; NOVOTNÝ, J.; HRDLIČKA, A.; NOVOTNÝ, K.; ŠPERKA, P.; KAISER, J. Triple-pulse LIBS: Laser-induced breakdown spectroscopy signal enhancement by combination of pre-ablation and re-heating laser pulses. Journal of Analytical Atomic Spectrometry, 2020, roč. 35, č. 293, s. 293-300. ISSN: 1364-5544.
    Detail | WWW

    ZAPLETAL, T.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication. Lubricants, 2020, roč. 8, č. 2, s. 1-11. ISSN: 2075-4442.
    Detail | WWW | Plný text v Digitální knihovně

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I. Příspěvek v rámci mezinárodní odborné konference. 2020.
    Detail

    KOŠŤÁL, D.; ŠPERKA, P.; CHMELAR, J.; VITEK, P.; POLAK, M.; KŘUPKA, I. Comparison of Grease and Solid Lubrication of Rolling Bearings Under Small-Stroke Reciprocationfor Space Applications. Tribology in Industry, 2020, roč. 42, č. 1, s. 146-158. ISSN: 0354-8996.
    Detail | WWW

  • 2019

    KŘUPKA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Lubrication of rolling - sliding polymer contacts. In Engineering Mechanics 2019. Engineering Mechanics 2018. First edition. Prague: Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague, 2019. s. 219-222. ISBN: 978-80-87012-71-0. ISSN: 1805-8256.
    Detail | WWW

    ZAPLETAL, T.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Dynamic friction measurement of EHL contact with artificial roughness. ECOTRIB 2019, 7th European Conference on Tribology. The Austrian Tribology Society, 2019. s. 34-34. ISBN: 978-3-901657-60-3.
    Detail

    FRÝZA, J.; KROUPA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Investigation of film thickness of grease-lubricated thrust bearing: From ball-on-disc to bearing. In Proceedings on Engineering Sciences. Proceedings on Engineering Sciences - 16th International Conference on Tribology. 1. Kragujevac, Serbia: University of Kragujevac, Faculty of Engineering, 2019. s. 550-554. ISSN: 2620-2832.
    Detail | WWW

  • 2018

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Artificial Surface Roughness Deformation in the Starved EHL Contacts. Tribology Online, 2018, roč. 13, č. 1, s. 1-7. ISSN: 1881-2198.
    Detail | WWW

    KANETA, M.; KŘUPKA, I.; ŠPERKA, P.; HARTL, M.; YANG, P.; YANG, P. Thermal Elastohydrodynamic Lubrication of Ceramic Materials. TRIBOLOGY TRANSACTIONS, 2018, roč. 61, č. 5, s. 868-878. ISSN: 1040-2004.
    Detail

    SALAJKOVÁ, Z.; HOLÁ, M.; HRDLIČKA, A.; POŘÍZKA, P.; NOVOTNÝ, K.; ČELKO, L.; ŠPERKA, P.; PROCHAZKA, D.; NOVOTNÝ, J.; MODLITBOVÁ, P.; KANICKÝ, V.; KAISER, J. Feasibility of nanoparticles enhanced laser ablation inductively coupled plasma mass spectrometry. 2018. s. 109-109.
    Detail

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental study of the replenishment in EHL contact lubricated by oils and greases. In 73rd Society of Tribologists & Lubrication Engineers Annual Meeting & Exhibition 2018, Proceedings of a meeting held 20-24 May 2018, Minneapolis, Minnesota, USA. 1. 2018. s. 1 (1 s.). ISBN: 9781510867635.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Roughness effects in concentrated contact from full to mixed lubrication. In PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018). MALAYSIA: MALAYSIAN TRIBOLOGY SOC-MYTRIBOS, 2018. s. 171-172. ISBN: 978-967-13625-2-5.
    Detail | WWW

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact. Lubricants, 2018, roč. 6, č. 3, s. 1-11. ISSN: 2075-4442.
    Detail | WWW | Plný text v Digitální knihovně

    HOLÁ, M.; SALAJKOVÁ, Z.; HRDLIČKA, A.; POŘÍZKA, P.; NOVOTNÝ, K.; ČELKO, L.; ŠPERKA, P.; PROCHAZKA, D.; NOVOTNÝ, J.; MODLITBOVÁ, P.; KANICKÝ, V.; KAISER, J. Feasibility of Nanoparticle-Enhanced Laser Ablation Inductively Coupled Plasma Mass Spectrometry. Analytical Chemistry, 2018, č. 8, s. 1-6. ISSN: 1520-6882.
    Detail | WWW

    ZAPLETAL, T.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. The effect of surface roughness on friction and film thickness in transition from EHL to mixed lubrication. TRIBOLOGY INTERNATIONAL, 2018, roč. 128, č. 1, s. 356-364. ISSN: 1879-2464.
    Detail | WWW

    OMASTA, M.; EBNER, M.; ŠPERKA, P.; LOHNER, T.; KŘUPKA, I.; HARTL, M.; HOEHN, B-R.; STAHL, K. Film formation in EHL contacts with oil-impregnated sintered materials. INDUSTRIAL LUBRICATION AND TRIBOLOGY, 2018, roč. 70, č. 4, s. 612-619. ISSN: 0036-8792.
    Detail | WWW

    OMASTA, M.; ADAM, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment. Lubricants, 2018, roč. 6, č. 4, s. 1-12. ISSN: 2075-4442.
    Detail | WWW | Plný text v Digitální knihovně

    EBNER, M; OMASTA, M.; LOHNER, T; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.; MICHAELIS, K.; HOHN, R-B.; STAHL, K. Local Effects in EHL Contacts with Oil-Impregnated Sintered Materials. Lubricants, 2018, roč. 7, č. 1, s. 1-21. ISSN: 2075-4442.
    Detail | WWW

    NEČAS, D.; JAROŠ, T.; DOČKAL, K.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M. The effect of kinematic conditions on film thickness in compliant lubricated contact. ASME Transaction, Journal of Tribology, 2018, roč. 140, č. 5, s. 1-8. ISSN: 0742-4787.
    Detail | WWW

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Effects of lateral harmonic vibrations on film thickness in EHL point contacts. Tribology International, 2018, roč. 117, č. 1, s. 236-249. ISSN: 0301-679X.
    Detail | WWW

  • 2017

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Frictional response of lubricant in EHL contact under transient bi-directional shear loading. Tribology in Industry, 2017, roč. 39, č. 4, s. 506-518. ISSN: 0354-8996.
    Detail | WWW | Plný text v Digitální knihovně

    FICZA, I.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Effect of Kinematic Operating Conditions on Ridge Deformation—Numerical Study With Experimental Comparison. ASME Transaction, Journal of Tribology, 2017, roč. 139, č. 3, s. 031502-031509. ISSN: 0742-4787.
    Detail | WWW

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Prediction of Shallow Indentation Effects in a Rolling-Sliding EHL Contact Based on Amplitude Attenuation Theory. Tribology Online, 2017, roč. 12, č. 1, s. 1-7. ISSN: 1881-2198.
    Detail | WWW

    ZAPLETAL, T.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. The effect of surface grooves on transition to mixed lubrication. Tribology International, 2017, roč. 114, č. 1, s. 409-417. ISSN: 0301-679X.
    Detail | WWW

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Viscoelastic response of lubricant in an EHL contact under transient bi- directional shear loading. Atlanta, Georgia, USA: Society of Tribologists and Lubrication Engineers, 2017.
    Detail | WWW

    DOČKAL, K.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Fluid flow measurements of 5P4E by particle tracking velocimetry. In ENGINEERING MECHANICS 2017. Česká republika: Aakdemie věd ČR, Ústav termomechaniky, 2017. s. 274-277. ISBN: 978-80-214-5497-2.
    Detail | WWW

    KOŠŤÁL, D.; ŠPERKA, P.; SVOBODA, P.; KŘUPKA, I.; HARTL, M. Influence of lubricant inlet film thickness on EHL contact starvation. ASME Transaction, Journal of Tribology, 2017, roč. 139, č. 5, s. 1-10. ISSN: 0742-4787.
    Detail

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental comparison of the behavior between base oil and grease starvation based on inlet film thickness. Tribology in Industry, 2017, roč. 2017, č. 1, s. 110-119. ISSN: 0354-8996.
    Detail | WWW | Plný text v Digitální knihovně

    HOUDKOVÁ, Š.; ŠPERKA, P.; REPKA, M.; MARTAN, J.; MOSKAL, D. Shifted laser surface texturing for bearings applications. In 6th International Conference on Fracture Fatigue and Wear 26–27 July 2017, Porto, Portugal. Journal of Physics: Conference Series. BRISTOL: IOP PUBLISHING LTD, 2017. s. 1-10. ISSN: 1742-6588.
    Detail | WWW

  • 2016

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part I: Roughness Deformation. TRIBOLOGY TRANSACTIONS, 2016, roč. 59, č. 2, s. 267-276. ISSN: 1040-2004.
    Detail | WWW

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Lubricant flow in thin-film elastohydrodynamic contact under extreme conditions. Friction, 2016, roč. 4, č. 4, s. 380-390. ISSN: 2223-7690.
    Detail | WWW | Plný text v Digitální knihovně

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Surface Roughness Effects under High Sliding EHL Conditions. Tribology Online, 2016, roč. 11, č. 1, s. 34-39. ISSN: 1881-218X.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental Study of Roughness Effect in a Rolling-Sliding EHL Contact. Part II: Complementary Effects. TRIBOLOGY TRANSACTIONS, 2016, roč. 59, č. 2, s. 277-285. ISSN: 1040-2004.
    Detail | WWW

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Relationship between Thickness of Entering Layer and Level of EHL Contact Starvation. In Tribology - Industrial and Automotive Lubrication. Esslingen (Germany): Techniosche Akademie Esslingen e.V., 2016. s. 120-120. ISBN: 978-3-943563-23- 8.
    Detail | WWW

    KŘUPKA, I.; ŠPERKA, P.; HARTL, M. Effect of surface roughness on lubricant film breakdown and transition from EHL to mixed lubrication. Tribology International, 2016, roč. 100, č. 1, s. 116-125. ISSN: 0301-679X.
    Detail | WWW

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Transition from plug-flow to linear speed profile near a dent in a rolling–sliding EHL contact. Tribology International, 2016, roč. 100, č. 1, s. 344-350. ISSN: 0301-679X.
    Detail | WWW

    BAIR, S.; HABCHI, W.; SPERKA, P.; HARTL, M. Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 2016, roč. 230, č. 3, s. 289-299. ISSN: 1350-6501.
    Detail | WWW

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. The effect of surface grooves on film breakdowns in point contacts. Tribology International, 2016, roč. 102, č. 1, s. 249-256. ISSN: 0301-679X.
    Detail | WWW | Plný text v Digitální knihovně

    ŠPERKA, P.; OMASTA, M.; KŘUPKA, I.; HARTL, M. Abnormal lubricant aggregation on roughness features in a rolling–sliding elastohydrodynamic contact. Tribology International, 2016, roč. 94, č. 1, s. 346-351. ISSN: 0301-679X.
    Detail | WWW

    FRÝZA, J.; ŠPERKA, P.; KANETA, M.; KŘUPKA, I.; HARTL, M. Effects of lubricant rheology and impact speed on EHL film thickness at pure squeeze action. Tribology International, 2016, roč. 106, č. 2, s. 1-9. ISSN: 0301-679X.
    Detail | WWW

    NEČAS, D.; VRBKA, M.; YARIMITSU, S.; NAKASHIMA, K.; SAWAE, Y.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Frictional properties of PVA hydrogel. In The Latest Methods of Construction Design. Springer International Publishing, 2016. s. 159-164. ISBN: 978-3-319-22761-0.
    Detail | WWW

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Effects of lateral vibrations on film thickness distribution in a point EHL contact. Hämeenlinna, Finland: Finnish Society for Tribology, 2016.
    Detail

  • 2015

    WANG, J.; LUBRECHT, AA.; ŠPERKA, P.; OMASTA, M.; KANETA, M. Effect of high slide-roll ratio on thermal elastohydrodynamic lubrication in line contacts with surface waviness. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 2015, roč. 229, č. 5, s. 568-577. ISSN: 1350-6501.
    Detail

    NEČAS, D.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M. Film thickness mapping in lubricated contacts using fluorescence. MM Science Journal, 2015, roč. 4, č. 4, s. 821-824. ISSN: 1803-1269.
    Detail

    POŘÍZKA, P.; ROČŇÁKOVÁ, I.; KLUS, J.; PROCHAZKA, D.; SLÁDKOVÁ, L.; ŠPERKA, P.; SPOTZ, Z.; ČELKO, L.; NOVOTNÝ, K.; KAISER, J. Estimating the grade of Mg corrosion using Laser-Induced Breakdown Spectroscopy. Journal of Analalytical Atomic Spectrometry, 2015, roč. 2015, č. 7, s. 2099-2106. ISSN: 0267-9477.
    Detail | WWW

    GALAS, R.; ŠPERKA, P.; OMASTA, M.; HARTL, M.; KŘUPKA, I. Investigation of the Lubricant Fluid- Flow in EHL Contact using Particle Tracking. In Book of Proceedings of 56th International Conference of Machine Design Departments. First. Nitra: Slovak University of Agriculture in Nitra, 2015. s. 353-356. ISBN: 978-80-552-1377- 4.
    Detail

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Behaviour of EHL Films under Lateral Vibrations. In Book of Proceedings of 56th International Conference of Machine Design Departments. First. Nitra: Slovak University of Agriculture in Nitra, 2015. s. 349-352. ISBN: 978-80-552-1377- 4.
    Detail

    KOŠŤÁL, D.; ŠPERKA, P.; SVOBODA, P.; KŘUPKA, I.; HARTL, M. Experimental observation of elastohydrodynamically lubricated contacts replenishment. MM Science Journal, 2015, č. 2015/3, s. 640-644. ISSN: 1805-0476.
    Detail | WWW

    GALAS, R.; ŠPERKA, P.; OMASTA, M.; HARTL, M.; KŘUPKA, I. Investigation of the Lubricant Fluid- Flow in EHL Contact using Particle Tracking. Machine Design. Scholar' s Press, 2015. ISBN: 978-3-639-66914- 5.
    Detail

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Behaviour of EHL Films under Lateral Vibrations. Scholar' s Press, 2015.
    Detail | WWW

    KOŠŤÁL, D.; NEČAS, D.; ŠPERKA, P.; SVOBODA, P.; KŘUPKA, I.; HARTL, M. Lubricant Rupture Ratio at Elastohydrodynamically Lubricated Contact Outlet. Tribology Letters, 2015, roč. 59, č. 3, s. 1 (jasne s.)ISSN: 1023-8883.
    Detail | WWW

    FRÝZA, J.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Roughness Effects in Impact EHL of Elliptical Contacts. Tokyo: Japanese Society of Tribologists, 2015. s. 971-972.
    Detail

  • 2014

    KANETA, M.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Ehl traction analysis of perfluoropolyether fluids based on bulk modulus. Tribologia: Finnish Journal of Tribology, 2014, roč. 32, č. 2, s. 29-37. ISSN: 0780-2285.
    Detail

    KŘUPKA, I.; ŠPERKA, P. Vývoj a konstrukce experimentálního zařízení pro studium mazacích filmů. 2014. s. 1-5.
    Detail

    NEČAS, D.; VRBKA, M.; ŠPERKA, P.; DRUCKMÜLLER, M.; SKLÁDAL, P.; ŠTARHA, P.; KŘUPKA, I.; HARTL, M. Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique. In Modern Methods of Construction Design. Lecture Notes in Mechanical Engineering. Springer International Publishing, 2014. s. 615-622. ISBN: 978-3-319-05202- 1. ISSN: 2195- 4356.
    Detail | WWW

    KOŠŤÁL, D.; ŠPERKA, P.; HARTL, M. Controlling and Measuring Starvation Severity in EHL Contacts. Engineering Mechanics, 2014, roč. 21, č. 5, s. 321-328. ISSN: 1802- 1484.
    Detail

    FICZA, I.; ŠPERKA, P.; HARTL, M. Transient Calculations in Elastohydrodynamically Lubricated Point Contacts. Engineering Mechanics, 2014, roč. 2014 (21), č. 5, s. 311-319. ISSN: 1805- 4633.
    Detail

    HARTL, M.; KŘUPKA, I.; OMASTA, M.; ŠPERKA, P. RECENT ADVANCES AND PROBLEMS IN LUBRICATED HERTZIAN CONTACTS. In ENGINEERING MECHANICS 2014. Engineering mechanics 2014. Engineering Mechanics. Svratka, Česká Republika.: Czech Society for Mechanics, 2014. s. 34-37. ISBN: 978-80-214-4871-1. ISSN: 1805-8248.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Evidence of Plug Flow in Rolling-Sliding Elastohydrodynamic Contact. Tribology Letters, 2014, roč. 54, č. 2, s. 151-160. ISSN: 1023-8883.
    Detail

    HARTL, M.; KŘUPKA, I.; OMASTA, M.; ŠPERKA, P. Recent Advances and Problems in Lubricated Hertzian Contacts. In Engineering Mechanics 2014. Svratka: Brno University of Technology, 2014. s. 34-38. ISBN: 978-80-214-4871-1.
    Detail

    NEČAS, D.; VRBKA, M.; YARIMITSU, S.; NAKASHIMA, K.; SAWAE, Y.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Frictional Properties of PVA Hydrogel. In 55th International Conference of Machine Design Departments. 2014. s. 147-152. ISBN: 978-80-01-05542- 7.
    Detail

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Mechanismy mazání valivých ložisek. In 2014. s. 30-32.
    Detail

    JANALIK, P.; FICHTER, T.; ŠPERKA, P.; OMASTA, M.; RAUSER, P. Three- dimensional optical assessment of experimental iatrogenic mechanical damage to canine dental enamel caused by a sonic scaler. Veterinární medicína, 2014, roč. 59, č. 6, s. 293-298. ISSN: 0375- 8427.
    Detail | WWW

  • 2013

    VRBKA, M.; NÁVRAT, T.; KŘUPKA, I.; HARTL, M.; ŠPERKA, P.; GALLO, J. Study of film formation in bovine serum lubricated contacts under rolling/sliding conditions. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 2013, roč. 227, č. 5, s. 459-475. ISSN: 1350-6501.
    Detail

    BIBOULET, N.; ŠPERKA, P.; VENNER, CH.; LUBRECHT, T.; KŘUPKA, I. Obtaining the pressure spike and maximum shear stress from optical interferometry data. Tribology International, 2013, roč. 65, č. 6, s. 1-7. ISSN: 0301- 679X.
    Detail

    KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Surface Roughness Effects in Starved EHL Contacts. In Proceedings of World Tribology Congres 2013. 1. Turín: Italian Tribology Association, 2013. s. 951-954. ISBN: 9781634393522.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Surface Roughness Effects in Thermal EHL Contacts. In Proceedings of the 5th World Tribology Congress. 2. Torino: Politecnico di Torino (DIMEAS), 2013. s. 1686-1688. ISBN: 9781634393522.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Rapid Prediction of Roughness Effects in Sliding EHL Contacts. In Society of Tribologists & Lubrication Engineers Annual Meeting & Exhibition 2013 / Proceedings of a meeting held 5-9 May 2013, Detroit, Michigan, USA. Detroit: Society of Tribologists and Lubrication Engineers, 2013. s. 180-182. ISBN: 978-1-62993-289- 7.
    Detail | WWW

    KOŠŤÁL, D.; ŠPERKA, P.; SVOBODA, P.; KŘUPKA, I.; HARTL, M. Influence of rolling elements distance on starvation. In Society of Tribologists & Lubrication Engineers Annual Meeting & Exhibition 2013 / Proceedings of a meeting held 5-9 May 2013, Detroit, Michigan, USA. Detroit: Curran Associates, Inc. ( Dec 2013 ), 2013. s. 296-298. ISBN: 978-1-62993-289- 7.
    Detail | WWW

    BAIR, S.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Quantitative elastohydrodynamic film thickness of mechanically degraded oil. Tribology International, 2013, roč. 65, č. 8, s. 33-38. ISSN: 0301- 679X.
    Detail

    NEČAS, D.; VRBKA, M.; ŠPERKA, P.; DRUCKMÜLLER, M.;SKLÁDAL, P.; ŠTARHA, P.; KŘUPKA, I.; HARTL, M. Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique. In Book of Proceedings of 54th International Conference of Machine Design Departments. Springer, 2013. s. 513-520. ISBN: 978-80-7372-986- 8.
    Detail

  • 2012

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. The Behavior of Surface Roughness in EHL Contacts Under Small Slide to Roll Ratios. Tribology Letters, 2012, roč. 47, č. 3, s. 357-366. ISSN: 1023-8883.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental study on analytical methods for roughness deformation description in EHL contacts. In PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012. Denver, CO: American Society of Mechanical Engineers, 2012. s. 123-125. ISBN: 978-0-7918-4508- 0.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental study of real roughness attenuation in rolling- sliding concentrated contacts. Tribology International, 2012, roč. 46, č. 1, s. 14-21. ISSN: 0301- 679X.
    Detail

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Prediction of Real Rough Surface Deformation in Pure Rolling EHL Contact: Comparison with Experiment. TRIBOLOGY TRANSACTIONS, 2012, roč. 55, č. 5, s. 698-704. ISSN: 1040- 2004.
    Detail

  • 2011

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental study of artificial features attenuation in rolling/ sliding concentrated contacts. In ASME/ STLE 2011 International Joint Tribology Conference. 1. Los Angeles, CA, USA: ASME/ STLE, 2011. s. 135-137. ISBN: 978-0-7918-5474- 7.
    Detail | WWW

    VAVERKA, M.; VRBKA, M.; FICZA, I.; ŠPERKA, P. Numerical Investigation of the Influence of Surface Asperities on Tribological Parameters in Lubricated Point Contact. In Proceedings of the International Conference BALTTRIB 2011. Balttrib 2009 Conference proceedings. 6. Kaunas, Litva: Aleksandras Stulginskis University, 2011. s. 117-121. ISBN: 978-609-449-006- 4. ISSN: 1822- 8801.
    Detail

    VRBKA, M.; KŘUPKA, I.; SVOBODA, P.; ŠPERKA, P.; NÁVRAT, T.; HARTL, M.; NOHAVA, J. Effect of shot peening on rolling contact fatigue and lubricant film thickness within mixed lubricated non-conformal rolling/ sliding contacts. Tribology International, 2011, roč. 44, č. 12, s. 1726-1735. ISSN: 0301- 679X.
    Detail

    SVOBODA, P.; VRBKA, M.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Study of Lubrication Film Formation in Ball Bearings Under Starved Conditions. In ASME/ STLE 2011 International Joint Tribology Conference. 1. Los Angeles, CA, USA: American Society of Mechanical Engineers, Tribology Division, TRIB, 2011. s. 183-185. ISBN: 978-0-7918-5474- 7.
    Detail

  • 2010

    VRBKA, M.; ŠAMÁNEK, O.; ŠPERKA, P.; NÁVRAT, T.; KŘUPKA, I.; HARTL, M. Effect of surface texturing on rolling contact fatigue within mixed lubricated non-conformal rolling/ sliding contacts. Tribology International, 2010, roč. 43, č. 8, s. 1457-1465. ISSN: 0301- 679X.
    Detail | WWW

    VAVERKA, M.; ZAPLETAL, L.; ŠPERKA, P.; VRBKA, M.; SVOBODA, P.; KŘUPKA, I. Vliv povrchových mikronerovností a defektů na rozložení kontaktního tlaku a tloušťky mazacího filmu za podmínek elastohydrodynamického mazání. In Failures of rolling bearings / Poruchy valivých ložísk. Bratislava: KONGRES Management, 2010. s. 55-58. ISBN: 978-80-89275-24- 3.
    Detail

    SHEN, XJ.; CHEN, XY.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Effect of real longitudinal surface roughness on lubrication film formation within line elastohydrodynamic contact. Tribology International, 2010, roč. 44, č. 3, s. 1-6. ISSN: 0301- 679X.
    Detail

  • 2009

    ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Experimental study of real roughness attenuation in concentrated contacts. Tribology International, 2009, roč. 42, č. 12, s. 1-9. ISSN: 0301- 679X.
    Detail

  • 2007

    ŠPERKA, P.; HARTL, M. 3D optický profilometr pro mapování inženýrských povrchů. Konference diplomových prací 2007. 1. Ústav konstruování, fakulta strojního inženýrství, VUT v Brně: Ústav konstruování, 2007. s. 1-5. ISBN: 978-80-214-3406- 6.
    Detail

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