Prohlížení Acta Polytechnica CTU Proceedings. 2019, vol. 25 dle názvu

Zobrazují se záznamy 8-18 z 18

    • FEASIBILITY STUDY OF MICRO-LATTICE STRUCTURES BY MULTIPHOTON LITHOGRAPHY 

      Autor: Wimmer, Markus; Major, Zoltan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The paper describes the possibilities of additive manufacturing with multiphoton lithography. The basis of this technology is that a laser beam (with a certain wavelength) is fired into the mixture of a monomer and a ...

    • HIGH STRAIN-RATE COMPRESSIVE TESTING OF FILLING MATERIALS FOR INTER-PENETRATING PHASE COMPOSITES 

      Autor: Doktor, Tomáš; Fíla, Tomáš; Zlámal, Petr; Kytýř, Daniel; Jiroušek, Ondřej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      In this study behavior of the selected types of filling material for the inter-penetrating phase composites was tested in compressive loading mode at low and high strain-rates. Three types of the filling material were ...

    • IN-SITU COMPRESSION TEST OF ARTIFICIAL BONE FOAMS IN CONTROLLED ENVIRONMENT USING X-RAY MICRO-COMPUTED TOMOGRAPHY 

      Autor: Glinz, Jonathan; Kytýř, Daniel; Fíla, Tomáš; Šleichrt, Jan; Schrempf, Andreas; Fürst, David; Kastner, Johann; Senck, Sascha
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      In this study, we investigated specimens of artificial bone foams, developed by the research group for surgical simulators at the UAS Linz, which are used to mimic the haptic feedback of physiologic and pathologic bone for ...

    • INVERSE COMPUTATIONAL DETERMINATION OF JOHNSON-COOK PARAMETERS USING THE SHPB TEST APPARATUS 

      Autor: Mauko, Anja; Nečemer, Branko; Ren, Zoran
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The paper describes determination of the material parameters of the Johnson-Cook constitutive model of steel S235 JR sample material by applying the inverse computational methodology using the digital twin model of the ...

    • MECHANICAL AND OPTICAL INVESTIGATION OF LASER WELDED STRUCTURAL STEEL - POLY(METHYL-METHACRYLATE) HYBRID JOINT STRUCTURES 

      Autor: Csizér, Tamás; Temesi, Tamás; Molnár, László
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Modern welding processes that can easily be automated (such as friction stir welding, laser welding and ultrasonic welding) are gaining popularity in joining metal-polymer hybrid structures. This field of science is ...

    • MECHANICAL AND STRUCTURAL PROPERTIES OF COLLAGEN NANOFRIBROUS LAYERS UNDER SIMULATED BODY CONDITIONS 

      Autor: Říhová, Jitka; Suchý, Tomáš; Vištejnová, Lucie; Horný, Lukáš; Šupová, Monika
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The theme of this paper is the analysis of mechanical and structural properties of nanofibrous COL under simulated body conditions and in the presence of osteoblasts and dermal fibroblasts. COL were prepared by electrostatic ...

    • MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC 

      Autor: Concas, Francesca; Diebels, Stefan; Jung, Anne
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Closed-cell polyvinylchloride (PVC) foams are widely used as core for sandwich composites for applications, in which multiaxial loads are involved. In the present work a wide range of uniaxial (tension, compression and ...

    • NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT 

      Autor: Dvořák, Radim; Koudelka, Petr; Fíla, Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The paper aims at the numerical simulation of the wave propagation in compressive Split Hopkinson Pressure Bar (SHPB) experiment. The paper deals with principles of SHPB measurement, optimisation of a numerical model and ...

    • SIMULATION AND OPTIMIZATION OF POROUS BONE-LIKE MICROSTRUCTURES WITH SPECIFIC MECHANICAL PROPERTIES 

      Autor: Wit, Adrian; Wronski, Sebastian; Tarasiuk, Jacek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Bone trabecular structure can be characterized as a connected network of mineral bars and plates with unique mechanical properties. Standard methods of producing bone-like structures based on periodic structures or foams ...

    • STRAIN-RATE AND PRINTING DIRECTION DEPENDENCY OF COMPRESSIVE BEHAVIOUR OF 3D PRINTED STAINLESS STEEL 316L 

      Autor: Neuhäuserová, Michaela; Koudelka, Petr; Falta, Jan; Adorna, Marcel; Fíla, Tomáš; Zlámal, Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The paper is focused on evaluation of the relation between mechanical properties of 3D printed stainless steel 316L-0407 and printing direction (i.e. the orientation of the part which is being printed in the manufacturing ...

    • X-RAY MICRO-TOMOGRAPHY CHARACTERIZATION OF VOIDS CAUSED BY THREE-POINT BENDING IN SELECTED ALKALI-ACTIVATED ALUMINOSILICATE COMPOSITE 

      Autor: Kumpová, Ivana; Rozsypalová, Iva; Keršner, Zbyněk; Rovnaníková, Pavla; Vopálenský, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper deals with the pilot characterization of a special alkali-activated aluminosilicate composite composed of waste brick powder, brick rubble and a solution of potassium water glass. Fracture tests were conducted ...