Recent Submissions

  • 3D MODELING OF HEAT AND MASS TRANSFER PROCESS DURING THE COMBUSTION OF SOLID FUEL IN A SWIRL FURNACE 

    Author: Askarova , Aliya; Bolegenova , Saltanat; Maximov , Valeriy; Bolegenova , Symbat; Nugymanova , Aizhan; Šafařík , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    In this work, a comprehensive study of thermal processes and aerodynamic and concentration characteristics of the combustion chamber of the boiler BKZ-75 of the Shakhtinskaya thermal power plant (Kazakhstan) are presented. ...
  • OPTIMIZATION OF COMPUTATIONAL BURDEN OF THE POINT INFORMATION GAIN 

    Author: Urban , Jan; Rychtáriková , Renata; Macháček , Petr; Štys , Dalibor; Urbanová , Pavla; Císař , Petr
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    We developed a method of image preprocessing based on the information entropy, namely, on the information contribution made by each individual pixel to the whole image or to image’s part (i.e., a Point Information Gain; ...
  • ANALYSIS OF THE PROPERTIES OF AW2099 ALUMINIUMLITHIUM ALLOY WELDED BY LASER BEAM WITH AW5087 ALUMINIUMMAGNESIUM FILLER MATERIAL 

    Author: Sahul , Miroslav; Sahul , Martin; Pašák , Matej; Marônek , Milan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    EN AW2099 aluminium lithium alloy, 2.0mm in thickness, was used as an experimental material. EN AW2099 belongs to the 3rd generation of aluminium lithium alloys. The third generation was developed to improve the disadvantages ...
  • COMPARATIVE STUDY AND EMPIRICAL MODELLING OF PULVERIZED COCONUT SHELL PERIWINKLE SHELL AND PALM KERNEL SHELL AS A POZZOLANS IN CONCRETE 

    Author: Ikponmwosa , Efe Ewaen; Ehikhuenmen , Samuel Onosedeba; Irene , Karieren Kate
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Infrastructural development across the world is fast growing due to the rapid growth in population. This has resulted in consequently creating an increase in the demand for construction materials, especially cement. This ...
  • THE INFLUENCE OF BASALT MINERALS AS CEMENT SUBSTITUTION MATERIALS IN MORTAR 

    Author: Amin , Muhammad; Birawidha , David Candra; Isnugroho , Kusno; Hendronursito , Yusup; Sumardi , Slamet; Ario , Septa; Syafriadi , Syafriadi; Al-Muttaqii , Muhammad
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    This study was conducted to determine the effect of the concentration of basalt as a cement substitution material in mortar. Basalt was analysed by XRD and XRF. From the XRD results, the diffractogram shows the dominant ...
  • GASPUFF TARGET FOR LASERPRODUCING PLASMA SXR SOURCE 

    Author: Salačová , Šárka; Wachulak , Przemyslaw; Tatíček , Milan; Vrbová , Miroslava
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Mass density spatial distributions of selected gas-puff targets have been determined by radiography, using quasi-monochromatic radiation at a wavelength of 13 nm. Results of spatial distributions of mass densities at various ...
  • IMPORTANCE OF A TYPE OF GATING SYSTEM IN INVESTMENT CASTING TECHNOLOGY 

    Author: Vrátný , Ondřej; Herman , Aleš
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    At present, there is an increasing demand for the Investment casting technology. It is necessary to ensure their dimensional accuracy as well as internal quality and their desired macrostructure and microstructure. This ...
  • APPLICABILITY VERIFICATION OF AUTOFORM SOFTWARE FOR FEM SIMULATION OF MECHANICAL FIXATION OF HEMMED JOINTS 

    Author: Chrášťanský , Lukáš; Šanovec , Jan; Martawirya , Yatna Yuwana; Valeš , Michal
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    This paper deals with the problematics of fixation of hemmed joints, especially with one specific mechanical method how to ensure a dimensional stability of a hemmed joint of car-body parts, such as doors, bonnet and trunk ...
  • STUDY OF SYNTHETIC DYE REMOVAL USING FENTON/TiO2 FENTON/UV AND FENTON/TiO2/UV METHODS AND THE APPLICATION TO JUMPUTAN FABRIC WASTEWATER 

    Author: Agustina , Tuty Emilia; Teguh , Dedi; Wijaya , Yourdan; Mermaliandi , Febrian; Bustomi , Ahmad; Manalaoon , Jantan; Theodora , Gita; Rebecca , Tessa
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    Synthetic dyes were commonly used in textile industries such as Jumputan fabric industries in South Sumatera. Most of these industries were categorized as a home industry without a wastewater treatment plant, so the ...
  • PNEUMATIC SYSTEMS FOR AUTOMATIC SORTING EQUIPMENT 

    Author: Onderová , Iveta; Čačko , Viliam; Kolláth , Ľudovít; Šooš , Ľubomír; Smelík , Andrej; Varga , Alexander
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
    The aim of the research work was focused on a research of manipulators design using suction grippers. The results of the research can be applied in the design of jigs - manipulators for handling thin sheets. The FME analysis ...
  • 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 ...

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