Acta Polytechnica. 2022, vol. 62, no.5

 

Zobrazují se záznamy 1-8 z 8

    • Low earth orbit nanosatellite: influence of heat dissipation on passive thermal analysis 

      Autor: Akka, Amine; Benabdelouahab, Farid; Yerrou, Randa
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The use of small satellites in ambitious missions presents challenges related to thermal breakdowns as one of the critical issues contributing to their failure. Heat dissipation and thermal management are still the major ...

    • Reduction of pavement thickness using a subgrade layer treated by different techniques 

      Autor: Zehawi, Raquim N.; Kareem, Yassir A.; Khudhair, Emad Y.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      A range of stabilisers for poor quality subgrade soils have been developed to promote road constructions. Many of them are becoming more popular depending on their effectiveness. The purpose behind this research is to ...

    • Performance assessment of steel truss railway bridge with curved track 

      Autor: Venglár, Michal; Lamperová, Katarína; Sokol, Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Non-destructive Structural Health Monitoring techniques can be incorporated into bridge integrity management by assessing structural conditions. This paper describes a performance assessment of a steel truss railway bridge ...

    • Extra control coefficient additive ECCA-PID for control optimization of electrical and mechanic system 

      Autor: Can, Erol
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Proportional Integral Derivative (PID) controllers are frequently used control methods for mechanical and electrical systems. Controller values are chosen either by calculation or by experimentation to obtain a satisfactory ...

    • Determination of fan design parameters for light-sport aircraft 

      Autor: Klesa, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This paper is focused on the preliminary design of an electric fan for light-sport aircraft. Usage of electric motors brings some advantages compared to piston engines, especially small size and the independence of power ...

    • Concrete lintels reinforced with steel fibres oriented by a magnetic field 

      Autor: Carrera, Kristýna; Künzel, Karel; Konrád, Petr; Sovják, Radoslav; Papež, Václav; Mára, Michal; Fornůsek, Jindřich; Kheml, Přemysl
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This paper explores the possibility of applying the technique of magnetic orientation of steel fibres for manufacturing a concrete structural element of realistic dimensions, compared to small laboratory specimens. This ...

    • Experimental study of the torsional effect for yarn break load test of polymeric multifilaments 

      Autor: da Cruz, Daniel Magalhães; Clain, Fernanda Mazuco; Guilherme, Carlos Eduardo Marcos
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Polymeric multifilaments have gained a significant interest in recent decades. In the studies of mechanical characteristics, although there are different types of tests, such as rupture, abrasion, creep, impact and fatigue, ...

    • The engineering performance of eco-friendly concretes containing diatomite fly ash and ground granulated blast furnace slag 

      Autor: Aruntaş, Hüseyin Yilmaz; Yildiz, Erkan; Kaplan, Gökhan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Approximately 10 % of CO2 is emitted from an ordinary Portland cement production. In cement and concrete production, CO2 emissions can be greatly reduced by using Supplementary Cementitious Materials (SCMs). In addition, ...