Recent Submissions

  • WAAM TECHNOLOGY OPTIMIZED BY OFFLINE 3D ROBOT SIMULATION 

    Author: Gurčík , Tomáš; Kovanda , Karel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    WAAM (Wire + Arc Additive Manufacturing) is an alternative additive technology that combines an electric arc as a heat source, filler material in the form of a wire for welding and cladding individual weld passes so as to ...
  • INDICATORS FOR COMMON CROSSING STRUCTURAL HEALTH MONITORING WITH TRACKSIDE INERTIAL MEASUREMENTS 

    Author: Sysyn , Mykola; Gerber , Ulf; Nabochenko , Olga; Li , Yangyang; Kovalchuk , Vitalii
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    This paper focuses on the experimental study of an alteration in the railway crossing dynamic response due to the rolling surface degradation during a crossing’s lifecycle. The maximal acceleration measured with the ...
  • COMPENSATION OF SPRINGBACK IN LARGE SHEET METAL FORMING 

    Author: Pačák , Tomáš; Tatíček , František; Valeš , Michal
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    A precise production of sheet metal parts has always been a main goal in press shops. Highest quality demands are required especially in automotive production. Unfortunately, even today, the production is not optimal due ...
  • ADSORPTION OF CATIONIC DYE FROM AQUEOUS SOLUTION USING COMPOSITE CHICKEN EGGSHELL ANTHILL CLAY: OPTIMIZATION OF ADSORBENT PREPARATION CONDITIONS 

    Author: Yusuff Sikiru, Adeyinka
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    A composite adsorbent was prepared from anthill and eggshell mixture, using an incipient wetness impregnation method and it was used for an adsorption of cationic dye (methylene blue, MB) from an aqueous solution. The ...
  • CYLINDRICAL ROLLER BEARING LUBRICATION REGIMES ANALYSIS AT LOW SPEED AND PURE RADIAL LOAD 

    Author: Chmelař , Jakub; Petr , Karel; Mikeš , Petr; Dynybyl , Vojtěch
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    In this article, we describe a method of the roller bearing lubrication regime prediction. It uses a mathematical model of the bearing based on the standard ISO/TS 16281 to obtain the external load distribution over the ...
  • AUTOMATIC EEG CLASSIFICATION USING DENSITY BASED ALGORITHMS DBSCAN AND DENCLUE 

    Author: Piorecký , Marek; Štrobl , Jan; Krajča , Vladimír
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Electroencephalograph (EEG) is a commonly used method in neurological practice. Automatic classifiers (algorithms) highlight signal sections with interesting activity and assist an expert with record scoring. Algorithm ...
  • THE CHARACTERISTICS OF AlSi COATING ON STEEL 22MnB5 DEPENDING ON THE HEAT TREATMENT 

    Author: Kolaříková , Marie; Chotěborský , Rostislav; Hromasová , Monika; Linda , Miloslav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    The coating on the 22MnB5 steel is intended to protect it against oxidation during the forming process. This steel is hot-pressed. A preheating before the pressing and subsequent hardening in the tool affects the properties ...
  • MODELBASED SECURITY ANALYSIS OF FPGA DESIGNS THROUGH REINFORCEMENT LEARNING 

    Author: Vetter , Michael
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Finding potential security weaknesses in any complex IT system is an important and often challenging task best started in the early stages of the development process. We present a method that transforms this task for FPGA ...
  • EVALUATING SHEAR STRENGTH OF SAND GGBFS BASED GEOPOLYMER COMPOSITE MATERIAL 

    Author: Al-Rkaby Hussein Jassim, Alaa
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Geopolymer has been emerging as a novel and sustainable replacement for the traditional soil improvement materials, such as ordinary Portland cement OPC and lime, which have severe environmental impacts. In this paper, a ...
  • THE EFFECT OF SOIL GRAIN SIZE ON THE DEFORMATION PROPERTIES OF REINFORCED GEOCELL LAYERS 

    Author: Luňáčková , Barbara; Mohyla , Marek; Pinka , Miroslav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    The effect of backfill material grading on the behaviour of geocell reinforced layers was experimentally investigated in this study. A series of loading tests were performed on a model with geocell reinforced and unreinforced ...
  • DYNAMIC SMART GRID COMMUNICATION PARAMETERS BASED COGNITIVE RADIO NETWORK 

    Author: Haider Tarish, Haider; Muhsen Halboot, Dhiaa; Shahadi Ismael, Haider; See Hang, Ong; Elmenreich , Wilfried
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    The demand for more spectrums in a smart grid communication network is a significant challenge in originally scarce spectrum resources. Cognitive radio (CR) is a powerful technique for solving the spectrum scarcity problem ...
  • A STUDY OF FERROFLUID LUBRICATION BASED ROUGH SINE FILM SLIDER BEARING WITH ASSORTED POROUS STRUCTURE 

    Author: Munshi M., Mohmmadraiyan; Patel R., Ashok; Deheri B., Gunamani
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    This paper attempts to study a ferrofluid lubrication based rough sine film slider bearing with assorted porous structure using a numerical approach. The fluid flow of the system is regulated by the Neuringer-Rosensweig ...
  • GENERAL CALCULATION OF WINDING FACTOR FOR MULTIPHASE/LAYER ELECTRICAL MACHINES IRRESPECTIVE OF POLES NUMBER 

    Author: Ouamara , Daoud; Dubas , Frédéric; Randi Ali, Sid; Benallal Nadjib, Mohamed; Espanet , Christophe
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    In this paper, a method to calculate the winding factor by only considering stator parameters without the rotor ones is developed. This is interesting because it allows the separation of the stator and rotor design, unlike ...
  • A COMPARATIVE STUDY OF DATADRIVEN MODELING METHODS FOR SOFTSENSING IN UNDERGROUND COAL GASIFICATION 

    Author: Kačur , Ján; Durdán , Milan; Laciak , Marek; Flegner , Patrik
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Underground coal gasification (UCG) is a technological process, which converts solid coal into a gas in the underground, using injected gasification agents. In the UCG process, a lot of process variables can be measurable ...
  • DETERMINATION OF DETONABLE GAS MIXTURE HEAT FLUXES AT THERMAL DEBURRING 

    Author: Plankovskyy , Sergey; Teodorczyk , Andrzei; Shypul , Olga; Tryfonov , Oleg; Brega , Dmytro
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Modern technology requires a multitude of precise parts that are a necessity in reliable methods of surface finishing. Energy of detonable gas mixture combustion has been used in manufacturing as a processing source for a ...
  • HEAT FLUX JUMP METHOD AS A POSSIBILITY OF CONTACTLESS MEASUREMENT OF LOCAL HEAT TRANSFER COEFFICIENTS 

    Author: Solnař , Stanislav; Dostál , Martin
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    This article deals with the derivation of the temperature response of the finite thickness wall, which is heated by heat flow, as a possibility to measure the local values of the heat transfer coefficient with a very high ...
  • FABRICATION OF MgZnAl HYDROTALCITE AND ITS APPLICATION FOR Pb2+ REMOVAL 

    Author: Heraldy , Eddy; Rahmawati , Fitria; Ardiyanti , Dwi; Nurmawanti , Ika
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    The fabrication of Mg-Zn-Al Hydrotalcite (HT) was carried out by the co-precipitation method at various molar ratios. The Mg-Zn-Al HT compound at the optimum molar ratio was then calcined to determine the effect of calcination ...
  • GENERAL MODEL OF RADIATIVE AND CONVECTIVE HEAT TRANSFER IN BUILDINGS: PART II: CONVECTIVE AND RADIATIVE HEAT LOSSES 

    Author: Ficker , Tomáš
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    The present paper represents the second part of the serial publication, which deals with convective and radiative heat transfers in buildings. The algebraic computational method for combined convective-radiative heat ...
  • A MULTIPHASE FLOW LOOP DESIGN FOR INVESTIGATING THE PARTIAL PHASE SEPARATION IN A PIPE TEE 

    Author: Saieed , Ahmed; Memon Qadir, Zeeshan; Tran Cong, Minh; King Soon Pao, William
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    This article presents a design and commissioning of a multiphase flow loop, which was developed for scrutinizing the partial phase separation characteristics of pipe Tees. Its length is 9m and its primary diameter is 0.078m ...
  • MECHANICAL PROPERTIES OF RAMMED EARTH WITH RESPECT TO CLAY MIXTURE COMPOSITION 

    Author: Plaček Otcovská , Tereza; Mužíková , Barbora; Padevět , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Unfired earth is a traditional building material, but it is less used than other building materials, such as concrete or steel. But the use of unfired earth is experiencing a renaissance. ammed earth is a type of unfired ...

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