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Design of special extruder for 3D printing
Maňák, Juraj ; Vetiška, Jan (referee) ; Pavlík, Jan (advisor)
The bachelor thesis focuses on the design of a print head for 3D printing of cement mixtures. The work discusses current 3D concrete printing technologies, concrete transport options, and the properties of concrete mixes and admixtures. Next, three conceptual printhead solutions and two shaft bearings are proposed. Using multi-criteria analysis, the resulting variant is selected and it is structurally processed. The designed printhead allows continuous printing and mixing of the cement mixture and admixture of the setting accelerator.
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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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Design of special extruder for 3D printing
Maňák, Juraj ; Vetiška, Jan (referee) ; Pavlík, Jan (advisor)
The bachelor thesis focuses on the design of a print head for 3D printing of cement mixtures. The work discusses current 3D concrete printing technologies, concrete transport options, and the properties of concrete mixes and admixtures. Next, three conceptual printhead solutions and two shaft bearings are proposed. Using multi-criteria analysis, the resulting variant is selected and it is structurally processed. The designed printhead allows continuous printing and mixing of the cement mixture and admixture of the setting accelerator.
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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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