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Advanced filaments for FDM/FFF 3D printing
Kučera, Jan ; Vespalec, Arnošt (referee) ; Koutecký, Tomáš (advisor)
The bachelor thesis deals with the issue of FDM/FFF 3D printing with a focus on rapidly evolving new filaments and their use in industry. The aim of this work is to display a large number of filaments that have been tested and to categorize them into individual groups for future use. Selected tested materials from scientific studies address both the mechanical properties of individual pure filaments and the effect of additives to these filaments. The analysis of these works then showed that the effect of carbon fiber varies according to the type of base material and the weight percentage of filling. From a practical point of view, the results of this work can be used in the choice of material for printing models and prototypes for own usage.
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Design of a paper waste container
Jančová, Petra ; Haltof, Vladimír (referee) ; Vespalec, Arnošt (advisor)
The aim of this work is to create a conceptual design of a paper recycling container with regard to aesthetic shaping, effective use of internal storage space, handling, transport and ergonomic requirements. It solves the shortcomings of current containers by timeless shaping using modern materials and reliable production technologies. The result is a practical container design that uses psychology to encourage the public to sort paper waste and thus contributes to environmental responsibility and sustainability.
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UAV design for civil and commercial purposes
Linhartová, Simona ; Křenek, Ladislav (referee) ; Vespalec, Arnošt (advisor)
The topic of this bachelor thesis is design of an UAV suited for commercial and civil use. The goal is to create a drone with compact looks and user–friendly composition that fulfils ergonomic and technical needs in compliance with professional use. The thesis includes the state of the art in the field, design and technical analysis that shall present the reader to contemporary issues in the field of UAV.
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Modification of printhead for 3D print of concrete
Diakov, Jakub ; Paloušek, David (referee) ; Vespalec, Arnošt (advisor)
This bachelor’s thesis deals with the engineering design of the adjustment of the jet used for continuous 3d printing of the concrete mixtures which are used for the printhead which already exists. The main function of the jet is to shape and deposit the printed mixture in a way that it corresponds to the required geometry of the product. The thesis contains a research focused on the issues of 3D printing such as properties of concrete flow, influence of the shape and size of the end of the jet on printing and individual mechanisms related to the optimal use of these jets. The second part of the thesis contains the analysis of knowledge and the determination of the appropriate parameters for the construction of the jet. These parameters influence the geometry and the quality and effectiveness of production. The practical part of the thesis is focused on the possible structural design of the jet adjustment based on the knowledge from the research part of the thesis. The practical part also deals with the design of the jet in a way the flaws and imperfections occurring in case of the previous constructions of the jets. In case of use of the jet designed in the corresponding way, the production can be substantially accelerated, and the quality of products can be substantially higher.
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Spatial 3D printing methods
Skurka, Šimon ; Vespalec, Arnošt (referee) ; Krčma, Martin (advisor)
This bachelor's thesis deals with methods of spatial 3D printing, which can solve many problems of manufacturing by fused deposition modelling. The aim of this thesis is to describe their strengths and weaknesses, requirements for hardware, software and their benefits to the world of 3D printing. Methods are introduced in the first part of the thesis, while the final evaluation is placed further.
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Design of Medical Thermal Imaging Camera
Vespalec, Arnošt ; Haltof, Vladimír (referee) ; Rubínová, Dana (advisor)
The aim of this thesis bachelor is the design of the medical thermal imaging camera, which will be its solution respecting technical, ergonomic and economic requirements. Among other things, it includes an overview of the current market situation, with an emphasis on the development of new technologies, including experimental.
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Advanced materials for FDM/FFF 3D print
Rygl, Michal ; Vespalec, Arnošt (referee) ; Koutecký, Tomáš (advisor)
The presented work deals with the issue of FDM / FFF 3D printing with a focus on materials with added carbon fiber. The aim of this work is to experimentally analyze the effect of carbon additive on printed parts using mechanical and thermomechanical tests. Testing of selected materials has shown that the effect of carbon additive varies according to the used base material. For example, carbon in PET-G has reduced impact strength by up to 64%. However, carbon filled CPE has demonstrated the ability to absorb impact energy up to by 28.5%. The different effect of carbon fiber was measured on the CPE material in a tensile test, where the yield strength was reduced during the stretching of the samples at room temperature, but the modulus of elasticity was increased. The absolutely positive effect of carbon was measured on all observed polymer filaments in the thermomechanical 3-point bending test, when the carbon versions of the materials achieved better results. The measured data brings an extension of the possibility of comparing the results with other types of materials suitable for 3D printing in the field of research. From a practical point of view the test results can be used for the actual choice of material when printing models has specific conditions of use. Another practical use of the analyzed data is the use of printable results of advanced materials for the creation of print profiles for other desktop 3D printers of the FDM/FFF type.
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Additive manufacturing of fixtures for assembly and pressing by FDM
Gregora, Jan ; Vespalec, Arnošt (referee) ; Slavíček, Jakub (advisor)
This bachelor thesis dealt with the design of fixtures for prototype assembly of thermoregulating modules. One of the aims of the thesis was to evaluate the suitability of using FDM printing for the production of prototype fixtures. FDM fixtures are intended to replace the metal fixtures used to date. The motivation for the use of additive manufacturing was to make production cheaper and faster within the prototype department of Schaeffler Production CZ, s.r.o. The effect of the surface loading on the 3D printed PETG material, which was chosen as the construction material within the scope of the work, was measured. The results of this measurement and the findings from the research part were used for FEA analysis and design of the product. The comparison of the cost-effectiveness and the speed of the prototype fixture production clearly shows that the use of additive technologies is better.
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Advanced filaments for FDM/FFF 3D printing
Kučera, Jan ; Vespalec, Arnošt (referee) ; Koutecký, Tomáš (advisor)
The bachelor thesis deals with the issue of FDM/FFF 3D printing with a focus on rapidly evolving new filaments and their use in industry. The aim of this work is to display a large number of filaments that have been tested and to categorize them into individual groups for future use. Selected tested materials from scientific studies address both the mechanical properties of individual pure filaments and the effect of additives to these filaments. The analysis of these works then showed that the effect of carbon fiber varies according to the type of base material and the weight percentage of filling. From a practical point of view, the results of this work can be used in the choice of material for printing models and prototypes for own usage.
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Design of a paper waste container
Jančová, Petra ; Haltof, Vladimír (referee) ; Vespalec, Arnošt (advisor)
The aim of this work is to create a conceptual design of a paper recycling container with regard to aesthetic shaping, effective use of internal storage space, handling, transport and ergonomic requirements. It solves the shortcomings of current containers by timeless shaping using modern materials and reliable production technologies. The result is a practical container design that uses psychology to encourage the public to sort paper waste and thus contributes to environmental responsibility and sustainability.
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