P. Sperka

发表

Experimental comparison of the behavior between base oil and grease starvation based on inlet film thickness

I. Křupka, M. Hartl, D. Košťál, 2017 .

Effects of lateral harmonic vibrations on film thickness in EHL point contacts

I. Křupka, M. Hartl, P. Sperka, 2018 .

The effect of surface grooves on transition to mixed lubrication

I. Křupka, M. Hartl, P. Sperka, 2017 .

Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part II: Complementary Effects

I. Křupka, M. Hartl, P. Sperka, 2016 .

Effect of surface texturing on rolling contact fatigue within mixed lubricated non-conformal rolling/sliding contacts

I. Křupka, M. Hartl, P. Sperka, 2010 .

Prediction of Real Rough Surface Deformation in Pure Rolling EHL Contact: Comparison with Experiment

I. Křupka, M. Hartl, P. Sperka, 2012 .

Experimental study of real roughness attenuation in concentrated contacts

I. Křupka, M. Hartl, P. Sperka, 2010 .

The effect of surface grooves on film breakdowns in point contacts

I. Křupka, M. Hartl, P. Sperka, 2016 .

Transition from Plug-flow to Linear Speed Profile near a Dent in a Rolling-sliding EHL Contact

I. Křupka, M. Hartl, P. Sperka, 2016 .

Lubricant flow in thin-film elastohydrodynamic contact under extreme conditions

I. Křupka, M. Hartl, P. Sperka, 2016 .

Evidence of Plug Flow in Rolling–Sliding Elastohydrodynamic Contact

I. Křupka, M. Hartl, P. Sperka, 2014, Tribology Letters.

Frictional response of lubricant in EHL contact under transient bi-directional shear loading

I. Křupka, M. Hartl, P. Sperka, 2017 .

Local Effects in EHL Contacts with Oil-Impregnated Sintered Materials

T. Lohner, K. Michaelis, B. Höhn, 2018, Lubricants.

Prediction of Shallow Indentation Effects in a Rolling-Sliding EHL Contact Based on Amplitude Attenuation Theory

M. Hartl, P. Sperka, Ivan K rcaron, 2017 .

Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part I: Roughness Deformation

I. Křupka, M. Hartl, P. Sperka, 2016 .

Abnormal lubricant aggregation on roughness features in a rolling–sliding elastohydrodynamic contact

M. Omasta, I. Křupka, M. Hartl, 2016 .

Triple-pulse LIBS: laser-induced breakdown spectroscopy signal enhancement by combination of pre-ablation and re-heating laser pulses

P. Sperka, K. Novotný, J. Kaiser, 2020 .

Experimental Observation of Elastohydrodynamically Lubricated Contacts Replenishment

Martin Hartl, David Kostal, Ivan Krupka, 2015 .

Shifted laser surface texturing for bearings applications

P. Sperka, J. Martan, D. Moskal, 2017 .

Experimental study of real roughness attenuation in rolling/sliding concentrated contacts

I. Křupka, M. Hartl, P. Sperka, 2011 .

Feasibility of Nanoparticle-Enhanced Laser Ablation Inductively Coupled Plasma Mass Spectrometry.

P. Sperka, K. Novotný, J. Kaiser, 2018, Analytical chemistry.

The Effect of Kinematic Conditions on Film Thickness in Compliant Lubricated Contact

I. Křupka, M. Hartl, P. Sperka, 2018 .

LIBS protocol for the assessment of depth profile, homogeneity, and quantification of Fe/Co - based bilayer ribbon

P. Sperka, P. Švec, J. Kaiser, 2022, Spectrochimica Acta Part B: Atomic Spectroscopy.

DLC-Coated Thermoplastics: Tribological Analyses Under Dry and Lubricated Sliding Conditions

T. Lohner, M. Hartl, P. Sperka, 2022, Tribology Letters.

DLC-Coated Thermoplastics: Tribological Analyses under Lubricated Rolling-Sliding Conditions

T. Lohner, M. Hartl, P. Sperka, 2022, Tribology Letters.

Influence of sample surface topography on laser ablation process.

P. Sperka, D. Pavliňák, J. Kaiser, 2021, Talanta.

Film Thickness in Elastohydrodynamically Lubricated Slender Elliptic Contacts: Part II – Experimental Validation and Minimum Film Thickness

P. Sperka, J. Frýza, M. Wolf, 2022, Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology.

Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning

S. Bair, M. Hartl, P. Sperka, 2016 .

Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact

Martin Hartl, Ivan Krupka, Petr Sperka, 2018, Lubricants.

Effect of shot peening on rolling contact fatigue and lubricant film thickness within mixed lubricated non-conformal rolling/sliding contacts

J. Nohava, I. Křupka, M. Hartl, 2011 .

Quantitative elastohydrodynamic film thickness of mechanically degraded oil

S. Bair, I. Křupka, M. Hartl, 2013 .

Study of film formation in bovine serum lubricated contacts under rolling/sliding conditions

I. Křupka, M. Hartl, P. Sperka, 2013 .

Three-dimensional optical assessment of experimental iatrogenic mechanical damage to canine dental enamel caused by a sonic scaler.

M. Omasta, P. Sperka, T. Fichtel, 2018 .

Modification of Diffusion Layers by Laser Shock Peening

P. Sperka, J. Procházka, D. Dobrocký, 2022, Manufacturing Technology.

Effect of real longitudinal surface roughness on lubrication film formation within line elastohydrodynamic contact

Martin Hartl, Ivan Křupka, Petr Sperka, 2010 .

Effect of Contact Conformity on Grease Lubrication

I. Křupka, M. Hartl, P. Sperka, 2022, Lubricants.

Influence of Lubricant Inlet Film Thickness on Elastohydrodynamically Lubricated Contact Starvation

Martin Hartl, Petr Svoboda, David Kostal, 2017 .

DLC-Coated Thermoplastics: Tribological Analyses Under Dry and Lubricated Sliding Conditions

T. Lohner, M. Hartl, P. Sperka, 2022, Tribology letter.

Lubricant Rupture Ratio at Elastohydrodynamically Lubricated Contact Outlet

Martin Hartl, David Nečas, Ivan Křupka, 2015, Tribology Letters.

Thermal Elastohydrodynamic Lubrication of Ceramic Materials

M. Kaneta, I. Křupka, M. Hartl, 2018 .

Experimental investigation of friction in compliant contact: The effect of configuration, viscoelasticity and operating conditions

I. Křupka, M. Hartl, P. Sperka, 2021, Tribology International.

Liquid superlubricity of lubricants containing hydroxyl groups and their aqueous solution under rolling/sliding conditions

I. Křupka, P. Sperka, Tomáš Poláček, 2023, Friction.

Effects of lubricant rheology and impact speed on EHL film thickness at pure squeeze action

Motohiro Kaneta, Martin Hartl, Ivan Krupka, 2017 .

Frictional Properties of PVA Hydrogel

I. Křupka, M. Hartl, P. Sperka, 2016 .

May 2019 LUBRICATION OF ROLLING – SLIDING POLYMER CONTACTS

J. Krupka, I. Křupka, M. Hartl, 2019 .

Effect of surface roughness on lubricant film breakdown and transition from EHL to mixed lubrication

I. Křupka, M. Hartl, P. Sperka, 2016 .

The Behavior of Surface Roughness in EHL Contacts Under Small Slide to Roll Ratios

I. Křupka, M. Hartl, P. Sperka, 2012, Tribology Letters.

Film thickness interrelationship of base oil and grease lubricated compliant and hard non-conformal contacts

I. Křupka, M. Hartl, P. Sperka, 2021, Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology.

Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique

I. Křupka, M. Hartl, P. Sperka, 2014 .