Prohlížení ČVUT - elektronické publikace dle autora "886391b0-17d1-4291-be28-f632e421bb17"
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Computed tomography system with strict real-time synchronization for in-situ 3D analysis of periodically vibrating objects
Autor: Rada, Václav; Fíla, Tomáš; Zlámal, Petr; Koudelka, Petr; Šleichrt, Jan; Macháček, Michael; Vavřík, Daniel; Kytýř, Daniel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)In the contribution, we present a laboratory system capable of X-ray computed tomography (XCT) scanning of an periodically moving or oscillating object. The system is an in-house developed XCT setup with electromagnetic ... -
DIRECT MEASUREMENT OF REACTION FORCES DURING FAST DYNAMIC LOADING
Autor: Falta, Jan; Adorna, Marcel; Fíla, Tomáš; Zlámal, Petr
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)The presented paper is focused on embedding of the serially manufactured piezo-electric impact loadcell into Open Hopkinson Pressure Bar (OHPB) and it’s modifications for a direct force measurement during dynamic loading. ... -
EVALUATION OF HOPKINSON BAR EXPERIMENTS USING MULTIPLE DIGITAL IMAGE CORRELATION SOFTWARE TOOLS
Autor: Adorna, Marcel; Brodner, Stefan; Falta, Jan; Zlámal, Petr; Fíla, Tomáš
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)Three different tools for Digital Image Correlation (DIC) were used for evaluation of dynamic experiments performed using custom Open Hopkinson Pressure Bar (OHPB) apparatus. High strain-rate measurements were performed ... -
Experimental evaluation of aluminothermic welds
Autor: Zeman, Lukáš; Valach, Jaroslav; Zlámal, Petr; Krčmářová, Nela; Koudelková, Veronika; Zeman, Jaroslav
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)The article presents a study of the mechanical processes occurring during the aluminothermic reaction using experimental methods (strain gauges, digital image correlation, thermography, scanning electron microscopy, ... -
HIGH STRAIN-RATE COMPRESSIVE TESTING OF FILLING MATERIALS FOR INTER-PENETRATING PHASE COMPOSITES
Autor: Doktor, Tomáš; Fíla, Tomáš; Zlámal, Petr; Kytýř, Daniel; Jiroušek, Ondřej
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)In this study behavior of the selected types of filling material for the inter-penetrating phase composites was tested in compressive loading mode at low and high strain-rates. Three types of the filling material were ... -
IMPACT TESTING OF ORDNANCE GELATINE UNDER MODERATE STRAIN RATE CONDITIONS
Autor: Doktor, Tomáš; Zlámal, Petr; Šleichrt, Jan; Fíla, Tomáš; Kytýř, Daniel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)An experimental study on energy absorption capabilities and strain rate sensitivity of ordnance gelatine was performed. Strain energy density under quasi static compression and moderate strain rate impact tests was compared. ... -
INSTRUMENTATION OF SPLIT HOPKINSON PRESSURE BAR FOR TESTING OF CELLULAR METALLIC MATERIALS
Autor: Falta, Jan; Zlámal, Petr; Adorna, Marcel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)This paper presents an overview of the custom design instrumentation of a Split Hopkinson Pressure Bar modified for dynamic testing of materials with low mechanical impedance, particularly for cellular metallic materials ... -
MULTI-CHANNEL CONTROL SYSTEM FOR IN-SITU LABORATORY LOADING DEVICES
Autor: Rada, Václav; Fíla, Tomáš; Zlámal, Petr; Kytýř, Daniel; Koudelka, Petr
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)In recent years, open-source applications have replaced proprietary software in many fields. Especially open-source software tools based on Linux operating system have wide range of utilization. In terms of CNC solutions, ... -
PREPROCESSING OF HOPKINSON BAR EXPERIMENT DATA: FILTER ANALYSIS
Autor: Adorna, Marcel; Falta, Jan; Fíla, Tomáš; Zlámal, Petr
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)This work presents a data preprocessing procedure for signal acquired during high strain-rate loading using a custom Split Hopkinson Pressure Bar (SHPB). Before the evaluation of the experimental data, preprocessing of the ... -
STRAIN-RATE AND PRINTING DIRECTION DEPENDENCY OF COMPRESSIVE BEHAVIOUR OF 3D PRINTED STAINLESS STEEL 316L
Autor: Neuhäuserová, Michaela; Koudelka, Petr; Falta, Jan; Adorna, Marcel; Fíla, Tomáš; Zlámal, Petr
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)The paper is focused on evaluation of the relation between mechanical properties of 3D printed stainless steel 316L-0407 and printing direction (i.e. the orientation of the part which is being printed in the manufacturing ... -
TESTING OF HYBRID NICKEL-POLYURETHANE FOAMS AT HIGH STRAIN-RATES USING HOPKINSON BAR AND DIGITAL IMAGE CORRELATION
Autor: Adorna, Marcel; Zlámal, Petr; Fíla, Tomáš; Falta, Jan; Felten, Markus; Fries, Michael; Jung, Anne
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)In this paper Split Hopkinson pressure bar (SHPB) was used for dynamic testing of nickel coated polyurethane hybrid foams. The foams were manufactured by electrodeposition of a nickel coating on the standard open-cell ...