Prohlížení Acta Polytechnica dle názvu
Zobrazují se záznamy 71-90 z 880
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AN EXPERIMENTAL INVESTIGATION INTO MOISTURE-INDUCED EXPANSION OF PLASTERS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)This paper presents an experimental study on moisture-induced expansion of selected plasters. Contactless measurement is introduced and a coefficient of moisture expansion for different building plasters is established. ... -
AN INTERPOLATION METHOD FOR DETERMINING THE FREQUENCIES OF PARAMETERIZED LARGE-SCALE STRUCTURES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Parametric Model Order Reduction (pMOR) is an emerging category of models developed with the aim of describing reduced first and second-order dynamical systems. The use of a pROM turns out useful in a variety of applications ... -
An Investigation of corrosion of friction welded and post-weld heat-treated AA6061/SiC/graphite hybrid composites
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)The aluminium-based hybrid metal matrix composites have noteworthy applications in sub-sea installations, structures of deep-sea crawlers, submarine parts, engine cylinders, drum brakes etc., as they possess high strength, ... -
An Optimal Procedure for Determining the Height Parameters of Fracture Surfaces
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents an attempt to find an optimal procedure for determining the height parameters of fracture surfaces. This is a useful task that may significantly increase the reliability of topographic analyses of solids. ... -
ANAEROBIC DIGESTION OF LANDFILL LEACHATE WITH NATURAL ZEOLITE AND SUGARCANE BAGASSE FLY ASH AS THE MICROBIAL IMMOBILIZATION MEDIA IN PACKED BED REACTOR
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)To enhance the digestion rate of a landfill leachate in the anaerobic packed bed reactor, a natural zeolite and sugarcane bagasse fly ash (BFA) were tested as the immobilization media. In order to scale up this process and ... -
ANALYSES OF WASTE PRODUCTS OBTAINED BY LASER CUTTING OF AW-3103 ALUMINIUM ALLOY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)In the presented research, the methods of scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction and transmission electron microscopy were applied to analyse the powder waste obtained by ... -
ANALYSIS AND IMPLEMENTATION OF APPLICATION SCHEMAS FOR THE INSPIRE BUILDINGS THEME
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)Implementing the INSPIRE directive involves transforming various data themes into the structure and content given by Data Specifications published by the Joint Research Center of the European Commission. The data is to be ... -
ANALYSIS OF DALLARA T12 RACE CAR FRONT WING VIBRATIONS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)This work investigates aerodynamic elements’ vibrations of high-speed vehicles on the example of the Dallara T12 race car front wing. Made up energy spectrums of wing vibrations for three specific cases arising during ... -
Analysis of factors affecting the efficiency of Jatropha curcas oil as an asphaltene stabiliser
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The effect of temperature and applied dose on the efficiency of Jatropha curcas seed oil as an asphaltene stabiliser was studied. Two crude oil samples (light and medium) were used. J. curcas oil was subjected to heating ... -
ANALYSIS OF INTENSIVELY BLASTED ELECTRIC ARC BURNING IN THE ARC HEATER'S ANODE CHANNEL
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)The paper deals with the description of the intensively blasted electric arc burning in Ar in the anode channel of the arc heater operated under various conditions. Directly measured experimental data (current, voltage, ... -
ANALYSIS OF MECHANICAL PROPERTIES OF HYDROTHERMALLY CURED HIGH STRENGTH CEMENT MATRIX FOR TEXTILE REINFORCED CONCRETE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)The main objective of this article is to describe the influence of hydrothermal curing conditions in an autoclave device (different pressure and temperature), which took place at various ages of a fresh mixture (cement ... -
Analysis of output voltage ripple for dual randomized PWM buck converter operating in continuous and discontinuous conduction modes
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Dual Randomized Pulse Width Modulation (DRPWM) is renowned for its better effectiveness than Simple Randomized Pulse Width Modulation (SRPWM) in reducing conducted Electro-Magnetic Interferences (EMI) in power converters. ... -
ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)The quality of cutting machines is affected by several factors that can be directly or indirectly influenced by manufacturers, technicians and users of machine tools. The most critical qualitative evaluation parameters of ... -
Analysis of parameters important for indirect drying of biomass fuel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This paper focuses on biomass drying for the design and operation of an indirect dryer used in a biomass power plant. Indirect biomass drying is not as well described process as direct drying, especially when used for the ... -
ANALYSIS OF STATIC ANGLE OF REPOSE WITH RESPECT TO POWDER MATERIAL PROPERTIES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)This paper investigates the Angle of Repose (AoR) of powder materials with respect to their morphological and rheological properties. Glass beads, sand, flour and semolina of different particle sizes were used as the ... -
ANALYSIS OF THE ACCURACY OF FIBRE-OPTIC STRAIN GAUGES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)In recent years, the field of structure monitoring has been making increasing use of systems based on fiber-optic technologies. Fiber-optic technology offers many advantages, including higher quality measurements, greater ... -
ANALYSIS OF THE MACRO EXPERIMENT DATA TO COMPARE PARTICLE ARRIVAL TIMES UNDER GRAN SASSO
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The claim of a neutrino velocity different from the speed of the light, made in September 2011 by the Opera experiment, suggested the study of the time delays between TeV underground muons in the Gran Sasso laboratory using ... -
ANALYSIS OF THE PROPERTIES OF AW2099 ALUMINIUM-LITHIUM ALLOY WELDED BY LASER BEAM WITH AW5087 ALUMINIUM-MAGNESIUM FILLER MATERIAL
(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 ... -
ANALYSIS OF TRANSONIC FLOW PAST CUSPED AIRFOILS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Transonic flow past two cusped airfoils is numerically solved and achieved results are analyzed by means of flow behavior and oblique shocks formation.Regions around sharp trailing edges are studied in detail and parameters ... -
ANALYSIS OF WELD JOINT DEFORMATIONS BY OPTICAL 3D SCANNING
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)This paper presents an analysis of weld joint deformation using optical 3D scanning. The weld joints of bimetals were made by explosion welding (EXW). GOM ATOS II TripleScan SO MV320 equipment with measuring volume 320 × ...