Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Tomáš Fíla"'
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 48 (2024)
The paper deals with the examination of the ageing effects on the mechanical properties stability of 3D printed material via stereolithography under compression when subjected to various conditions, including UV radiation, X-rays, and the effects of
Externí odkaz:
https://doaj.org/article/b75b8bb0792645b287987f4e335dd828
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 42 (2023)
X-ray radiography and computed tomography have become well-established methods for investigation of internal structure of objects and for defectoscopy. Recently, the methods have even been used for in-situ analysis of materials under mechanical loadi
Externí odkaz:
https://doaj.org/article/c1ebe33edf304892a503c84979c91bd5
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
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 42 (2023)
Ultra high performance concrete is a modern cementitious material which exhibits excellent mechanical properties such as damage tolerance, fracture toughness and durability. These features make this materials suitable for wide range of applications w
Externí odkaz:
https://doaj.org/article/b38599b084c849c69c95a8bb470e367e
Mechanical properties of basalt: a study on compressive loading at different strain rates using SHPB
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 42 (2023)
This article focuses on the mechanical properties of basalt in compressive loading at different strain-rates. The study employs advanced instrumentation for the evaluation of the results in dynamic conditions, while standard uni-axial loading device
Externí odkaz:
https://doaj.org/article/c5d1313eb43e48b1b769d0cb7be4315e
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 42 (2023)
This paper focuses on stereolithography (an additive manufacturing technology working on the principle of curing liquid resins layer by layer using ultraviolet radiation) and the effect of aging on the mechanical properties of the material and printe
Externí odkaz:
https://doaj.org/article/ab1ff1b0de764572894b952d1feaa444
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 1-5 (2019)
Three different tools for Digital Image Correlation (DIC) were used for evaluation of dynamic experiments performed using custom Open Hopkinson Pressure Bar (OHPB) apparatus. High strain-rate measurements were performed on specimens of advanced cellu
Externí odkaz:
https://doaj.org/article/c6ec2e0aaaa5422da8ba5609e0d68e67
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 25, Iss 0, Pp 21-24 (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 tested, (i) ordnance gelatin, (i
Externí odkaz:
https://doaj.org/article/683f1d9255d64476a443854ed906f079
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 25, Iss 0, Pp 32-35 (2019)
The presented paper is focused on embedding of the serially manufactured piezo-electric impact loadcell into Open Hopkinson Pressure Bar (OHPB) and it’s modifications for a direct force measurement during dynamic loading. Conventionally, during the
Externí odkaz:
https://doaj.org/article/88737d6bd5cf496d9307aa4d164aaffb