I. Křupka

发表

Case Study: the Influence of Oil-based Friction Modifier Quantity on Tram Braking Distance and Noise

Sakdirat Kaewunruen, Martin Hartl, Ivan Krupka, 2017 .

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

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

The low adhesion problem: The effect of environmental conditions on adhesion in rolling-sliding contact

M. Omasta, I. Křupka, M. Hartl, 2020 .

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 lubrication film formation and rolling contact fatigue within mixed lubricated non-conformal contacts

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

Influence of Surface Texturing on Lubricant Film Formation and Surface Fatigue

I. Křupka, P. Svoboda, M. Vrbka, 2010 .

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

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

Effect of surface texturing on mixed lubricated non-conformal contacts

I. Křupka, M. Hartl, M. Vrbka, 2008 .

Effect of surface texturing on elastohydrodynamically lubricated contact under transient speed conditions

Siyoul Jang, Martin Hartl, Pavel Houška, 2011 .

Influence of sanding parameters on adhesion recovery in contaminated wheel–rail contact

Martin Hartl, Ivan Křupka, Milan Omasta, 2015 .

Mechanical Degradation of the Liquid in an Operating EHL Contact

S. Bair, I. Křupka, M. Hartl, 2011 .

Surface Modifications and Tribological Effect in Orthopedics Implants

I. Křupka, D. Choudhury, Taposh Roy, 2015 .

Towards the understanding of lubrication mechanisms in total knee replacements – Part II: Numerical modeling

M. Wimmer, I. Křupka, M. Hartl, 2020 .

Experimental Study of Lubricant Film Thickness Behavior in the Vicinity of Real Asperities Passing through Lubricated Contact

I. Křupka, M. Hartl, M. Liska, 2004 .

Numerical study on the interaction of transversely oriented ridges in thermal elastohydrodynamic lubrication point contacts using the Eyring shear-thinning model

M. Kaneta, I. Křupka, Peiran Yang, 2017 .

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 .

Some insights into lubricant film thickness in mixed EHD point contacts

I. Křupka, M. Hartl, M. Liska, 2003 .

Tribological Behaviour of Smart Fluids Influenced by Magnetic and Electric Field – A Review

I. Křupka, M. Hartl, P. Svoboda, 2018, Tribology in Industry.

The role of constituents contained in water–based friction modifiers for top–of–rail application

M. Omasta, I. Křupka, M. Hartl, 2018 .

The effect of surface grooves on film breakdowns in point contacts

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

Newtonian quantitative elastohydrodynamic film thickness with linear piezoviscosity

Martin Hartl, Ivan Krupka, Scott Bair, 2010 .

Effect of Sliding Direction on EHL Film Shape Under High Sliding Conditions

M. Omasta, I. Křupka, M. Hartl, 2017 .

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 .

Experimental study of boundary layer formation in concentrated contacts

I. Křupka, M. Hartl, M. Liska, 2002 .

Calculation of pressure distribution in EHD point contacts from experimentally determinated film thickness

I. Křupka, M. Hartl, J. Molimard, 2005 .

Towards the understanding of lubrication mechanisms in total knee replacements – Part I: Experimental investigations

M. Wimmer, I. Křupka, M. Hartl, 2021 .

Local Effects in EHL Contacts with Oil-Impregnated Sintered Materials

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

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 .

The influence of slide-to-roll ratio on lubricant film thickness distribution in the vicinity of real roughness features passing through EHD point contact

I. Křupka, M. Hartl, M. Liska, 2005 .

The impact of surface and geometry on coefficient of friction of artificial hip joints.

C. Roy, I. Stavness, I. Křupka, 2017, Journal of the mechanical behavior of biomedical materials.

Experimental Observation of Elastohydrodynamically Lubricated Contacts Replenishment

Martin Hartl, David Kostal, Ivan Krupka, 2015 .

Replenishment Differences in EHL Contact Lubricated by New and In-bearings-aged Grease

I. Křupka, M. Hartl, D. Košťál, 2020 .

Effects of out-of-contact lubricant channeling on friction and film thickness in starved elastohydrodynamic lubrication point contacts

I. Křupka, M. Hartl, F. Ali, 2017 .

Enhancing the parameters of starved EHL point conjunctions by artificially induced replenishment

I. Křupka, M. Hartl, F. Ali, 2013 .

An Approximate Approach to Predict the Degree of Starvation in Ball–Disk Machine Based on the Relative Friction

I. Křupka, M. Hartl, F. Ali, 2013 .

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

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

Direct observation of the behaviour of real surface roughness passing through EHD point contact

I. Křupka, M. Hartl, M. Liska, 2003 .

A systematic review on correlation between biochemical and mechanical processes of lubricant film formation in joint replacement of the last 10 years

I. Křupka, M. Hartl, D. Hemzal, 2019, Lubrication Science.

Biotribology of synovial cartilage: Role of albumin in adsorbed film formation

I. Křupka, D. Nečas, M. Vrbka, 2022, Engineering Science and Technology, an International Journal.

Effect of Contact Condition on Film Thickness Formation in Artificial Joints

I. Křupka, M. Hartl, J. Gallo, 2014 .

Mapping of Lubricating Film Thickness in Human Hip Joint Replacements

I. Křupka, M. Hartl, M. Vrbka, 2012 .

Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts

I. Křupka, M. Hartl, D. Košťál, 2020, Tribology Online.

On the observation of lubrication mechanisms within hip joint replacements. Part I: Hard-on-soft bearing pairs.

I. Křupka, M. Hartl, A. Galandáková, 2019, Journal of the mechanical behavior of biomedical materials.

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

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

Analysis of Chemisorbed Tribo-Film for Ceramic-on-Ceramic Hip Joint Prostheses by Raman Spectroscopy

I. Křupka, M. Hartl, D. Hemzal, 2021, Journal of functional biomaterials.

THE BIOCHEMICAL PROCESS OF LUBRICANT FILM FORMATION IN JOINT REPLACEMENT

I. Křupka, M. Hartl, D. Hemzal, 2018 .

On the observation of lubrication mechanisms within hip joint replacements. Part II: Hard-on-hard bearing pairs.

I. Křupka, M. Hartl, J. Gallo, 2019, Journal of the mechanical behavior of biomedical materials.

Raman analysis of chemisorbed tribofilm for metal‐on‐polyethylene hip joint prostheses

I. Křupka, M. Hartl, D. Hemzal, 2021, Biosurface and Biotribology.

Effects of surface topography on lubrication film formation within elastohydrodynamic and mixed lubricated non-conformal contacts

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

The Influence of Surface Modification on Friction and Lubrication Mechanism Under a Bovine Serum–Lubricated Condition

S. Ghosh, I. Křupka, M. Hartl, 2016 .

A novel tribological study on DLC-coated micro-dimpled orthopedics implant interface.

I. Křupka, M. Hartl, M. Vrbka, 2015, Journal of the mechanical behavior of biomedical materials.

Metal matrix to ceramic matrix transition via feedstock processing of SPS titanium composites alloyed with high silicone content

I. Křupka, J. Cizek, Z. Spotz, 2018, Journal of Alloys and Compounds.

The Influence of Proteins and Speed on Friction and Adsorption of Metal/UHMWPE Contact Pair

I. Křupka, M. Hartl, Tetsuo Yamaguchi, 2017 .

Tribological behaviour of 3D printed materials for small joint implants: A pilot study.

I. Křupka, M. Hartl, D. Paloušek, 2022, Journal of the mechanical behavior of biomedical materials.

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

I. Křupka, M. Hartl, D. Nečas, 2020, Friction.

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

I. Křupka, M. Hartl, D. Nečas, 2020, Friction.

EHL simulation using the free-volume viscosity model

D. Zhu, I. Křupka, M. Hartl, 2006 .

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

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

The Effect of Load (Pressure) for Quantitative EHL Film Thickness

S. Bair, I. Křupka, M. Hartl, 2010 .

An Experimental Validation of the Recently Discovered Scale Effect in Generalized Newtonian EHL

Michael M. Khonsari, Martin Hartl, Ivan Krupka, 2009 .

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 .

Elastohydrodynamic Lubrication of Compliant Circular Contacts near Glass-Transition Temperature

I. Křupka, M. Hartl, J. Krupka, 2022, Lubricants.

Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising.

I. Křupka, M. Hartl, J. Cizek, 2016, Journal of the mechanical behavior of biomedical materials.

Improved wear resistance of functional diamond like carbon coated Ti-6Al-4V alloys in an edge loading conditions.

Ian Stavness, Yoshinori Sawae, Ivan Krupka, 2016, Journal of the mechanical behavior of biomedical materials.

Tribological investigation of ultra-high molecular weight polyethylene against advanced ceramic surfaces in total hip joint replacement

I. Křupka, M. Hartl, R. Mootanah, 2015 .

Comment on “History, Origins and Prediction of Elastohydrodynamic Friction” by Spikes and Jie

Gerhard Poll, Philippe Vergne, Wassim Habchi, 2015, Tribology Letters.

Quantitative elastohydrodynamic film thickness of mechanically degraded oil

S. Bair, I. Křupka, M. Hartl, 2013 .

The Shear-Thinning Elastohydrodynamic Film Thickness of a Two-Component Mixture

Martin Hartl, Ivan Krupka, Scott Bair, 2008 .

In situ measurements of thin films in bovine serum lubricated contacts using optical interferometry

I. Křupka, M. Hartl, A. Galandáková, 2014, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

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

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

The Effect of Synovial Fluid Composition, Speed and Load on Frictional Behaviour of Articular Cartilage

I. Křupka, M. Hartl, D. Nečas, 2020, Materials.

Biotribology of Synovial Cartilage: A New Method for Visualization of Lubricating Film and Simultaneous Measurement of the Friction Coefficient

I. Křupka, D. Nečas, M. Vrbka, 2020, Materials.

Visualization of Lubrication Film in Model of Synovial Joint

I. Křupka, M. Hartl, D. Nečas, 2019, Tribology in Industry.

Lubrication within hip replacements - Implication for ceramic-on-hard bearing couples.

I. Křupka, M. Hartl, A. Galandáková, 2016, Journal of the mechanical behavior of biomedical materials.

On the replacement of articular cartilage: The friction of PVA hydrogel layer in hip simulator test

I. Křupka, S. Yarimitsu, D. Nečas, 2023, Tribology International.

Behavior of thin viscous boundary films in lubricated contacts between micro-textured surfaces

I. Křupka, M. Hartl, R. Poliscuk, 2009 .

Thin Film Colorimetric Interferometry

Jérôme Molimard, Philippe Vergne, Martin Hartl, 2001 .

A review of the design and optimization of large-scale hydrostatic bearing systems

Martin Hartl, Ivan Křupka, Petr Svoboda, 2021 .

A Novel Functional Layered Diamond like Carbon Coating for Orthopedics Applications

I. Křupka, J. Lackner, Y. Sawae, 2016 .

The Impact of Surface and Geometry on Friction Coefficient Behavior of Artificial Hip Joints

I. Stavness, I. Křupka, M. Vrbka, 2017 .

Fabrication and characterization of DLC coated microdimples on hip prosthesis heads.

N. A. Abu Osman, I. Křupka, M. Hartl, 2015, Journal of biomedical materials research. Part B, Applied biomaterials.

Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation

I. Křupka, M. Hartl, P. Svoboda, 2020 .

UHMWPE acetabular cup creep deformation during the run-in phase of THA's life cycle.

I. Křupka, M. Hartl, J. Gallo, 2018, Journal of the mechanical behavior of biomedical materials.

Mechanical wear and oxidative degradation analysis of retrieved ultra high molecular weight polyethylene acetabular cups.

I. Křupka, M. Teeter, M. Zou, 2018, Journal of the mechanical behavior of biomedical materials.

Wear Analysis of Extracted Polyethylene Acetabular Cups Using a 3D Optical Scanner

Martin Hartl, Ivan Křupka, David Paloušek, 2017 .

The effect of lubricant constituents on lubrication mechanisms in hip joint replacements.

I. Křupka, M. Hartl, D. Nečas, 2016, Journal of the mechanical behavior of biomedical materials.

Visualization of lubricating films between artificial head and cup with respect to real geometry

I. Křupka, M. Hartl, J. Gallo, 2015 .

[Determination of a Friction Coefficient for THA Bearing Couples].

I. Křupka, M. Hartl, A. Galandáková, 2015, Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca.

Analysis of Friction in Total Knee Prosthesis during a Standard Gait Cycle

M. Wimmer, I. Křupka, M. Vrbka, 2021, Lubricants.

Observation of lubrication mechanisms in knee replacement: A pilot study

I. Křupka, M. Hartl, D. Nečas, 2019, Biotribology.

Experimental study of starved EHL contacts based on thickness of oil layer in the contact inlet

Martin Hartl, David Kostal, Ivan Krupka, 2013 .

Analytical and experimental investigation on friction of non-conformal point contacts under starved lubrication

I. Křupka, M. Hartl, F. Ali, 2013 .

STUDY OF GREASE BEHAVIOUR IN A STARVED ELASTOHYDRODYNAMICALLY LUBRICATED CONTACT

David Kostal, Ivan Krupka, Petr Svoboda, 2022 .

Effect of surface topography on mixed lubrication film formation during start up under rolling/sliding conditions

Martin Hartl, Ivan Krupka, Petr Svoboda, 2010 .

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

Martin Hartl, Ivan Křupka, Petr Sperka, 2010 .

Behavior of real roughness features within mixed lubricated non-conformal contacts

I. Křupka, M. Hartl, D. Koutný, 2008 .

The effect of top of rail lubricant composition on adhesion and rheological behaviour

M. Omasta, I. Křupka, M. Hartl, 2022, Engineering Science and Technology, an International Journal.

Asperity-based model for prediction of traction in water-contaminated wheel-rail contact

M. Omasta, I. Křupka, M. Hartl, 2021 .

Laboratory investigation of ability of oil-based friction modifiers to control adhesion at wheel-rail interface

Martin Hartl, Ivan Krupka, Milan Omasta, 2016 .

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 .

Experimental Evaluation of EHD Film Shape and Its Comparison With Numerical Solution

Martin Hartl, Radek Poliščuk, Miroslav Liška, 2000 .

The effect of surface texturing on thin EHD lubrication films

Martin Hartl, Ivan Křupka, I. Křupka, 2007 .

Effect of Surface Texturing on Very Thin Film EHD Lubricated Contacts

Martin Hartl, Ivan Křupka, I. Křupka, 2008 .

Experimental Study of Microtextured Surfaces Operating Under Thin-Film EHD Lubrication Conditions

I. Křupka, M. Hartl, 2007 .

Novel In-Situ Observation of the Grease Constituents in Elastohydrodynamic Contacts by Fluorescence Microscopy

I. Křupka, M. Hartl, J. Frýza, 2022, Tribology letter.

[What should an orthopaedic surgeon know about biotribology of total hip arthroplasty].

I. Křupka, M. Hartl, J. Gallo, 2013, Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca.

Influence of Li Grease Thickener Types on Film Thicknesses Formed between Smooth and Dented Surfaces

M. Kaneta, I. Křupka, M. Hartl, 2017 .

Lubricant Rupture Ratio at Elastohydrodynamically Lubricated Contact Outlet

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

Development of Tribological Model of Human Fascia: The Influence of Material Hardness and Motion Speed

I. Křupka, M. Hartl, D. Nečas, 2022, Biotribology.

In situ observation of lubricant film formation in THR considering real conformity: The effect of model synovial fluid composition

I. Křupka, M. Hartl, A. Galandáková, 2018 .

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.

An Automatic System for Real-Time Evaluation of EHD Film Thickness and Shape Based on the Colorimetric Interferometry

Martin Hartl, Ivan Křupka, Radek Poliščuk, 1999 .

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 .

Application of Spectroscopic Reflectometry to Elastohydrodynamic Lubrication Films Study

I. Křupka, M. Hartl, V. Čudek, 2011, Tribology Letters.

A novel tribological study on DLC-coated micro-dimpled orthopedics implant interface.

I. Křupka, M. Hartl, M. Vrbka, 2015, Journal of The Mechanical Behavior of Biomedical Materials.

Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising.

I. Křupka, M. Hartl, J. Cizek, 2016, Journal of the mechanical behavior of biomedical materials.

Frictional Properties of PVA Hydrogel

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

MAPPING OF FILM THICKNESS IN BOVINE SERUM LUBRICATED CONTACTS

I. Křupka, M. Hartl, J. Gallo, 2013 .

Viscoelastic Response of Elastohydrodynamically Lubricated Compliant Contacts below Glass-Transition Temperature

I. Křupka, M. Hartl, J. Krupka, 2023, Polymers.

Elastohydrodynamic Film Thickness Mapping by Computer Differential Colorimetry

Martin Hartl, Ivan Křupka, Miroslav Liška, 1999 .

Polymer lubrication: Pressure-viscosity-temperature dependence of film thickness for highly loaded compliant contacts in EHL regime

I. Křupka, M. Hartl, J. Krupka, 2022, Journal of tribology.

May 2019 LUBRICATION OF ROLLING – SLIDING POLYMER CONTACTS

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

Effects of Viscosupplementation on Tribological Behaviour of Articular Cartilage

I. Křupka, J. Gallo, M. Vrbka, 2022, Lubricants.