Zobrazeno 1 - 10
of 179
pro vyhledávání: '"Petr Koudelka"'
Autor:
Václav Rada, Tomáš Fíla, Petr Zlámal, Petr Koudelka, Jan Šleichrt, Michael Macháček, Daniel Vavřík, Daniel Kytýř
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 42 (2023)
In the contribution, we present a laboratory system capable of X-ray computed tomography (XCT) scanning of an periodically moving or oscillating object. The system is an in-house developed XCT setup with electromagnetic voice coil actuator mounted on
Externí odkaz:
https://doaj.org/article/19a1186425184ca0a1d5c71bbfaba017
Autor:
Ivana Kumpová, Tomáš Fíla, Petr Koudelka, Iva Rozsypalová, Zbyněk Keršner, Daniel Kytýř, Michal Vopálenský, Daniel Vavřík
Publikováno v:
Civil Engineering Journal, Vol 2020, Iss 1, Pp 124-134 (2020)
Quasi-brittle materialslike cement-based composites, rocks,and bricksare subjected to a number ofenvironmental loadings throughout the life cycleof buildings. For instance, fluctuation ofthe ambient temperature (climaticcyclesor fire) causing a varie
Externí odkaz:
https://doaj.org/article/330a889ce2154459bf9796bdc3124cff
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 25, Iss 0, Pp 25-31 (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 techniques of pulse shaping.
Externí odkaz:
https://doaj.org/article/d1a6b2e080f545bc994037512683dcc1
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 25, Iss 0, Pp 68-72 (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 device) subjected to compres
Externí odkaz:
https://doaj.org/article/307fd152f23746818394a95e4a1c9090
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 25, Iss 0, Pp 17-20 (2019)
Presented paper deals with experimental study on compressive properties of auxetics with controlled stiffness of strut joints. The variable strut joints properties were simulated by adding extra amount of material in the struts’ intersection region
Externí odkaz:
https://doaj.org/article/b8efb9b66c764dc1be4b147888226c73
Autor:
Michaela Neuhäuserová, Petr Koudelka
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 18, Iss 0, Pp 38-43 (2018)
The paper is focused on numerical analysis of mechanical behaviour of auxetic structures with re-entrant tetrakaidecahedral unit cell subjected to uni-axial quasi-static compression. The mechanical behaviour was evaluated inversely with respect to se
Externí odkaz:
https://doaj.org/article/13e2e6f87f234f1f898e4c4958ac4f4d
Autor:
Daniel Kytýř, Tomáš Fíla, Petr Koudelka, Ivana Kumpová, Michal Vopálenský, Leona Vavro, Martin Vavro
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 18, Iss 0, Pp 20-23 (2018)
High-resolution time-lapse micro-focus X-ray computed tomography is an effective method for investigation of deformation processes on volumetric basis including fracture propagation characteristics of non-homogeneous materials subjected to mechanical
Externí odkaz:
https://doaj.org/article/254cc8b66042449193f0aeeda0b9d05b
Autor:
Petr Koudelka, Veronika Koudelková, Tomáš Doktor, Ivana Kumpová, Daniel Kytýř, Jaroslav Valach
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 18, Iss 0, Pp 55-60 (2018)
Historical buildings represent invaluable heritage from the past and therefore their protection is a very important task. Assessment of their condition must not cause damage accumulation, thus the least possible volume removed from the structure is e
Externí odkaz:
https://doaj.org/article/d7ab55109ad34d3cb99634e4ddfb7730
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 18, Iss 0, Pp 15-19 (2018)
In recent years, open-source applications have replaced proprietary software in many fields. Especially open-source software tools based on Linux operating system have wide range of utilization. In terms of CNC solutions, an open-source system LinuxC
Externí odkaz:
https://doaj.org/article/3a20cd07fc434db4a47506747ed4f03e
Autor:
Michaela Neuhäuserová, Petr Koudelka, Tomáš Fíla, Jan Falta, Václav Rada, Jan Šleichrt, Petr Zlámal, Anja Mauko, Ondřej Jiroušek
Publikováno v:
Materials, Vol 15, Iss 3, p 941 (2022)
The main aim of the study was to analyse the strain rate sensitivity of the compressive deformation response in bulk 3D-printed samples from 316L stainless steel according to the printing orientation. The laser powder bed fusion (LPBF) method of meta
Externí odkaz:
https://doaj.org/article/c684e5bdf35d4d5c83622349204bcc47