Přehled vědecko-výzkumné, výukové a další činnosti Outline of research, educational and other activities Petr Šperka Mentor: prof. Ing. Martin Hartl, Ph.D. Institute of Machine and Industrial Design Faculty of Mechanical Engineering Brno University of Technology Czech Republic 0/12
Contents Scientific and research activities Educational activities Other activities 1/12
Introduction Scientific and research activities Rough surface EHL Amplitude attenuation theory analytical description of roughness deformation and effects connected with roughness 2/12
Scientific and research activities positive SRR (disk faster than ball) negative SRR (ball faster than disk) 3/12
Introduction Scientific and research activities Tribology transactions, FEB 2012, IF 0.854 Prediction of real rough surface deformation in pure rolling EHL contact: comparison with experiment. 4/12
Introduction Scientific and research activities Tribology Letters, JUN 2012, IF 1.582 The Behavior of Surface Roughness in EHL Contacts Under Small Slide to Roll Ratios. 5/12
surface height, (nm) Introduction Scientific and research activities Tribology Letters, IF 1.577? Tribology International, IF 1.553? in process of writing 250 200 150 100 50 2400N spd 0.005 0.005 m/s film thickness, (nm) 200 Measurement 150 100 50 0 0 100 200 300 400 x coordination, (μm) SRR 1,5 Experimental study of roughness features attenuation in rollingsliding EHL contacts, Part1: deformation of roughness Experimental study of roughness features attenuation in rollingsliding EHL contacts, Part2: complementary wave 0-50 -100 prediction SRR 0.5-150 SRR 1 SRR 1.5 0 50 100 150 x coordination, (μm) Frame 1 film thickness, (nm) film thickness, (nm) 200 150 100 50 0 0 100 200 300 400 x coordination, (μm) 200 150 100 50 0 0 100 200 300 400 x coordination, (μm) Film thickness SRR 1 SRR 0,5 Frame 2. Frame 3 6/12
Introduction Scientific and research activities My future research in rough surface EHL Rolling-sliding complementary wave short wavelength limitation Rolling-sliding roughness deformation connection with verified rheology models Roughness behaviour under starvation conditions Thermal effects on roughness behaviour Behaviour of grooves in EHL contact. 7/12
Introduction Scientific and research activities Tribology International, submitted SEP 2012, IF 1.553 Obtaining the Pressure Spike from Optical Interferometry to extract Rheological Data Cooperation with professors A.A. Lubrecht, C.H. Venner. 8/12
Educational activities Subjects: CKP machine design - machine elements Lectures Course for informaticians, mathematicians, physicists and industrial designers 5KS machine design - machine elements Standard students ZKR - Project based leaning Tribology project for students of fourth year 9/12
Other activities Optical profilometer measure smooth surfaces with ~ 0,1 nm resolution measure rough surfaces with 10 mm range XY table with 200x200 mm range Study of friction Study of lubrication Studium wear Surface measurement 10/12
Other activities In progress of purchase IR microscope In contact temperature measurement Pin on disk Universal friction-wear-lubrication tests 11/12
Other activities Wheel rail interface research - Sanding cooperation on project realization 12/12
Thank you for your attention P. Šperka (sperka@fme.vutbr.cz) Institute of Machine and Industrial Design Faculty of Mechanical Engineering Brno University of Technology Czech Republic 13/12