Now showing items 41-60 of 54543

    • Modelling of laminated glass interlayer by fractional viscoelasticity 

      Author: Hálková, Barbora; Schmidt, Jaroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Fractional calculus, i.e. the theory of derivatives and integrals of non-integer order, can be efficiently used for the theoretical modelling of viscoelastic materials. Our research is focused on the polyvinyl butyral which ...
    • Bar-supported and unsupported dental implants: a QCT-FEA study in human maxilla 

      Author: Řehounek, Luboš; Jíra, Aleš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Two variants of implant-supported overdentures (IODs) were investigated by quantitative computed tomography-assisted finite element method (QCT-FEA) on a patient-specific CTreconstructed model of human maxilla. The analyzed ...
    • The experimental evaluation of tensile forces in stays of a cable-stayed footbridge 

      Author: Boháčová, Magdaléna
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The topic of this paper is an experimental analysis of the dynamic behaviour of stays of an existing footbridge focusing on determination of the tensile forces in stays. The examined structure was the footbridge across the ...
    • The influence of lithium water glass on the durability of concrete 

      Author: Vašířová, Klára; Fládr, Josef
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The aim of the research is to verify the effect of lithium water glass on the durability and reduction of concrete absorption. For this purpose, the absorption test was made and the influence of the impregnation agent on ...
    • Generation of LDPM structure formed by Voronoi cells 

      Author: Vozáb, Jan; Vorel, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      A preliminary study of an approach to internal structure generation used in lattice discrete particle models (LDPMs) [1]. The presented method used for particle generation and placement is intended to help realistically ...
    • Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete 

      Author: Ďureje, Jakub; Prošek, Zdeněk; Trejbal, Jan; Potocký, Štěpán; Hlůžek, Radim
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The effect of atmospheric and low-pressure plasma modification on polypropylene (PP) microfibers was examined. Mechanical changes on the microfiber surfaces were observed using scanning electron microscopy (SEM). Next, ...
    • Comparison of behaviour of burnt beams models with effective and actual residual cross-sections in three point bending test 

      Author: Keřková Kucíková, Lucie; Šejnoha, Michal; Janda, Tomáš; Padevět, Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Glued laminated timber beams exposed to fire of a variable duration were tested in three point bending. Three types of model geometries taking into account the effect of burning were created. Each model was examined for ...
    • The footbridge Jesípek – application of radar interferometry for dynamic response evaluation 

      Author: Čáp, Miroslav; Polák, Michal; Plachý, Tomáš; Talich, Milan; Havrlant, Jan; Soukup, Lubomír; Antoš, Filip
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Recent advances in radar systems have led to the development of radar interferometry (RI) methods for contactless vibration monitoring of large-scale structures, i.e. bridges, water tower reservoirs, and factory chimneys. ...
    • Fractional multi-loop active disturbance rejection control for a lower knee exoskeleton system 

      Author: Al-Awad, Nasir Ahmed; Humaidi, Amjad Jaleel; Al-Araji, Ahmed Sabah
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Rehabilitation Exoskeleton is becoming more and more important in physiotherapists’ routine work. To improve the treatment performance, such as reducing the recovery period and/or monitoring and reacting to unpredictable ...
    • Shock wave configuration in a transonic flow through a mid-section of a last stage turbine blade cascade equipped with a part-span connector 

      Author: Radnic, Tomáš; Šafařík, Pavel; Luxa, Martin; Šimurda, David
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      This paper deals with the study of a flow field and namely the configuration of shock waves in a blade cascade equipped with a part-span connector called tie-boss. The cascade consists of prismatic blades formed from the ...
    • Compression behaviour and failure mechanisms of a safety culvert made of hollow high-performance concrete blocks 

      Author: Hála, Petr; Šmejkal, Filip; Sovják, Radoslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The safety culvert composed of hollow high-performance concrete blocks is designed to reduce the risk of injury in the event of a collision. This work presents a new design with an opening for water flow, tests it, identifies ...
    • Effect of cross-sections data on calculated static neutronic parameters of PWR MOX/UO2 core transient benchmark case using NODAL3 code 

      Author: Luthfi, Wahid; Pinem, Surian
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      This paper describes the effect of cross-section data generated by several codes on calculated neutronic parameters. The Pressurized Water Reactor Mixed Oxide and Uranium Oxide (PWR MOX/UO2) Core Transient Benchmark case ...
    • A comparative experimental investigation of high-temperature effect on fibre concrete and high strength concrete using UT and CM methods 

      Author: Royaei, Javad; Sadeghi, Kabir; Nouban, Fatemeh
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      In this paper, a 28-day compressive strength test has been performed on samples including normal fibre concrete and high-strength concrete. The ultrasonic test (UT) as a non-destructive and compression machine (CM) as a ...
    • Benchmark VERCORS 2022: blind prediction of time-dependent behavior of concrete containment building with low and high-fidelity models 

      Author: Krátký, Štěpán; Havlásek, Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The VERCORS program aims to acquire an extensive experimental dataset collected to provide a solid basis for numerical modeling of concrete containment buildings (CCBs). In order to cover the entire life-span of a real ...
    • Effect of electric current on porosity of concrete 

      Author: Ňachaj, Daniel; Němeček, Jiří; Kouřil, Milan; Keppert, Martin; Němeček, Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The paper describes the influence of electric current on the porosity of concrete samples after electrically accelerated tests and other electrokinetic treatments. Three different concrete mixtures consisting of CEM I ...
    • Application of cold atmospheric plasma for mold inactivation 

      Author: Tichá, Petra; Domonkos, Mária; Rácová, Zuzana; Demo, Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Mold growth in indoor interiors is an increasing problem that has adverse effects on both occupants and building materials. The aim of this study was to present the new environmentally friendly method (cold atmospheric ...
    • Use of lightweight FFT-based algorithms for remote measurements using DIC 

      Author: Zbirovský, Slávek; Nežerka, Václav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Abrupt collapse events that result in casualties due to failure of load-bearing structures have been reported in recent years. Continuous remote monitoring of these structures, assessing the behavior under operational load, ...
    • Measurement and evaluation of cement paste porosity by electrochemical impedance spectroscopy 

      Author: Chalupová, Jana; Němeček, Jiří; Hybášek, Vojtěch; Pommer, Vojtěch; Němeček, Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Porosity is an important part of cement paste microstructure, which significantly influences the mechanical properties (especially durability and strength) of cement-based materials. Electrochemical impedance spectroscopy ...
    • 3D CFD model for the analysis of the flow field through a horizontal axis wind turbine (HAWT) 

      Author: Menasri, Noureddine; Zergane , Said; Aimeur, Noureddine; Amour, Aissa
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      With the world’s growing demand for energy, renewable energy production has become important in providing alternative sources of energy and in reducing the greenhouse effect. This study investigates the aerodynamics and ...
    • Mechanical and physical properties of cement mixtures for 3D processing 

      Author: Litoš, Jiří; Šána, Vladimír; Uhlík, Adam; Kolář, Karel; Nguyen, Markéta
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      In this paper, information about cementitious composite materials for further 3D processing is discussed and supplemented. Many of the research in this area focuses primarily on cement composites suitable for 3D printing. ...