Prof. Ivan Křupka, Ph.D.

2016

• DONG, YC; SVOBODA, P; VRBKA, M; KOSTAL, D; URBAN, F; CIZEK, J; ROUPCOVA, P; DONG, HS; KRUPKA, I; HARTL, M, 2016:Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 55 , p. 215 - 227.
• CHOUDHURY, D; LACKNER, JM; MAJOR, L; MORITA, T; SAWAE, Y; BIN MAMAT, A; STAVNESS, I; ROY, CK; KRUPKA, I, 2016:Improved wear resistance of functional diamond like carbon coated Ti-6Al-4V alloys in an edge loading conditions. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 59 , p. 586 - 595.
• NECAS, D; VRBKA, M; KRUPKA, I; HARTL, M; GALANDAKOVA, A, 2016:Lubrication within hip replacements - Implication for ceramic-on-hard bearing couples. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 61 , p. 371 - 383.

2013

• ALI, F; KRUPKA, I; HARTL, M, 2013:An Approximate Approach to Predict the Degree of Starvation in Ball-Disk Machine Based on the Relative Friction. TRIBOLOGY TRANSACTIONS 56 (4), p. 681 - 686.
• ALI, F; KRUPKA, I; HARTL, M, 2013:Analytical and experimental investigation on friction of non-conformal point contacts under starved lubrication. MECCANICA 48 (3), p. 545 - 553.
• ALI, F; KRUPKA, I; HARTL, M, 2013:Enhancing the parameters of starved EHL point conjunctions by artificially induced replenishment. TRIBOLOGY INTERNATIONAL 66 , p. 134 - 142.
• BAIR, S; KRUPKA, I; SPERKA, P; HARTL, M, 2013:Quantitative elastohydrodynamic film thickness of mechanically degraded oil. TRIBOLOGY INTERNATIONAL 64 , p. 33 - 38.
• BIBOULET, N; SPERKA, P; VENNER, CH; LUBRECHT, AA; KRUPKA, I, 2013:Obtaining the pressure spike and maximum shear stress from optical interferometry data. TRIBOLOGY INTERNATIONAL 62 , p. 1 - 7.
• GALLO, J; HARTL, M; VRBKA, M; NAVRAT, T; KRUPKA, I, 2013:What Should an Orthopaedic Surgeon Know about Biotribology of Total Hip Arthroplasty. ACTA CHIRURGIAE ORTHOPAEDICAE ET TRAUMATOLOGIAE CECHOSLOVACA 80 (6), p. 377 - 385.
• KANETA, M; GUO, F; WANG, J; KRUPKA, I; HARTL, M, 2013:Formation of micro-grooves under impact loading in elliptical contacts with surface ridges. TRIBOLOGY INTERNATIONAL 65 , p. 336 - 345.
• KANETA, M; GUO, F; WANG, J; KRUPKA, I; HARTL, M, 2013:Pressure Increase in Elliptical Impact EHL Contacts with Surface Asperities. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012 , p. 101 - 102.
• KANETA, M; GUO, F; WANG, J; KRUPKA, I; HARTL, M, 2013:Pressure Increase in Elliptical Impact Elastohydrodynamic Lubrication Contacts With Longitudinal Asperities. JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME 135 (1)
• OMASTA, M; KRUPKA, I; HARTL, M, 2013:Effect of Surface Velocity Directions on Elastohydrodynamic Film Shape. TRIBOLOGY TRANSACTIONS 56 (2), p. 301 - 309.
• OMASTA, M; KRUPKA, I; HARTL, M, 2013:THE CONTRIBUTION OF A SLIDING VELOCITY TO EHL FILM THICKNESS DISTRIBUTION. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012 , p. 107 - 109.
• SPERKA, P; KRUPKA, I; HARTL, M, 2013:EXPERIMENTAL STUDY ON ANALYTICAL METHODS FOR ROUGHNESS DEFORMATION DESCRIPTION IN EHL CONTACTS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012 , p. 123 - 125.
• STAHL, K; MICHAELIS, K; MAYER, J; WEIGL, A; LOHNER, T; OMASTA, M; HARTL, M; KRUPKA, I, 2013:Theoretical and Experimental Investigations on EHL Point Contacts with Different Entrainment Velocity Directions. TRIBOLOGY TRANSACTIONS 56 (5), p. 728 - 738.
• SVOBODA, P; KOSTAL, D; KRUPKA, I; HARTL, M, 2013:EXPERIMENTAL STUDY OF LUBRICATION FILM FORMATION IN MULTIPLE CONTACTS DEVICE UNDER STARVED CONDITIONS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012 , p. 233 - 235.
• SVOBODA, P; KOSTAL, D; KRUPKA, I; HARTL, M, 2013:Experimental study of starved EHL contacts based on thickness of oil layer in the contact inlet. TRIBOLOGY INTERNATIONAL 67 , p. 140 - 145.
• VRBKA, M; NAVRAT, T; KRUPKA, I; HARTL, M; GALLO, J, 2013:EFFECT OF PROTEINS ON FILM FORMATION IN BOVINE SERUM LUBRICATED CONTACTS UNDER ROLLING/SLIDING CONDITIONS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012 , p. 39 - 41.
• VRBKA, M; NAVRAT, T; KRUPKA, I; HARTL, M; SPERKA, P; GALLO, J, 2013: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 227 (J5), p. 459 - 475.
• ZIMMERMAN, M; KRUPKA, I; HARTL, M; HOUSKA, P, 2013:LUBRICATION FILM THICKNESS BEHAVIOR UNDER TRANSIENT SPEED AND LOAD CONDITIONS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012 , p. 189 - 191.

2012

• CUDEK, V; KRUPKA, I; HARTL, M, 2012:Application of Spectroscopic Reflectometry to Elastohydrodynamic Lubrication Films Study. TRIBOLOGY LETTERS 45 (1), p. 195 - 205.
• KANETA, M; WANG, J; GUO, F; KRUPKA, I; HARTL, M, 2012:Effects of Loading Process and Contact Shape on Point Impact Elastohydrodynamics. TRIBOLOGY TRANSACTIONS 55 (6), p. 772 - 781.
• OMASTA, M; KRUPKA, I; HARTL, M, 2012:STUDY OF ELASTOHYDRODYNAMIC FILM SHAPE UNDER DIFFERENT DIRECTIONS OF VELOCITY VECTORS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE - 2011 , p. 401 - 403.
• SPERKA, P; KRUPKA, I; HARTL, M, 2012:EXPERIMENTAL STUDY OF ARTIFICIAL FEATURES ATTENUATION IN ROLLING/SLIDING CONCENTRATED CONTACTS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE - 2011 , p. 135 - 137.
• SPERKA, P; KRUPKA, I; HARTL, M, 2012:Experimental study of real roughness attenuation in rolling/sliding concentrated contacts. TRIBOLOGY INTERNATIONAL 46 (1), p. 14 - 21.
• SPERKA, P; KRUPKA, I; HARTL, M, 2012:Prediction of Real Rough Surface Deformation in Pure Rolling EHL Contact: Comparison with Experiment. TRIBOLOGY TRANSACTIONS 55 (5), p. 698 - 704.
• SPERKA, P; KRUPKA, I; HARTL, M, 2012:The Behavior of Surface Roughness in EHL Contacts Under Small Slide to Roll Ratios. TRIBOLOGY LETTERS 47 (3), p. 357 - 366.
• SVOBODA, P; VRBKA, M; SPERKA, P; KRUPKA, I; HARTL, M, 2012:STUDY OF LUBRICATION FILM FORMATION IN BALL BEARINGS UNDER STARVED CONDITIONS. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE - 2011 , p. 183 - 185.
• ZIMMERMAN, M; KRUPKA, I; HARTL, M; HOUSKA, P, 2012:EFFECT OF SURFACE TEXTURING ON EHD LUBRICATION FILMS UNDER TRANSIENT SPEED CONDITION. PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE - 2011 , p. 187 - 189.