National Repository of Grey Literature 9 records found  Search took 0.01 seconds. 
Desigm of the 3D printer for print material with carbon fibers
Chaloupka, Matyáš ; Kočiš, Petr (referee) ; Pavlík, Jan (advisor)
The presented thesis deals with FDM 3D printing method with emphasis on printing carbon fiber reinforced plastic (CFRP). The aim of this thesis is to engineer the FDM 3D printer designed for printing CFRP and to execute the experiment targeted on comparison of CFRP material properties against commonly used 3D printing plastics such as PLA, ABS, PET etc. The device designed in this work has printing area of 200 x 200 mm with maximum height of the object of 200 mm. The printing bed is heated and the whole device is enclosed. There are two kinds of experiments carried out within the thesis. The first one is focused on tensile strength and Young's modulus of selected materials, while the second experiment compares Charpy's impact strength of specimen with different infill percentage on two selected materials, PET and PET filled with chopped carbon fiber.
Determination of mechanical properties of low carbon and low alloy steels via small punch tests at room and low temperatures
Závodský, Peter ; Pantělejev, Libor (referee) ; Válka, Libor (advisor)
The presented diploma thesis deals with an innovative material test, so called Small Punch Test. There are main principles, advantages and limitations of the test stated in the thesis. There are stated also correlation procedures in order to obtain standard mechanical properties. A test fixture design has been done in order to perform test procedures at temperature range from 80 to 25 °C. Twelve experimental curves have been obtained from the test and typical quantities have been evaluated. The different accuracy of correlations with standard mechanical properties has been obtained using different correlation equations.
Design of 3D printer for high strength materials
Žlebek, Michal ; Dočkal, Aleš (referee) ; Koutný, Daniel (advisor)
Thesis deals with FDM 3D printing method and testing capabilities of optimum printing conditions for different materials. The aim of this work is to design and manufacture of experimental device that enables printing to investigate these conditions. A device designed in this work was named UK3DP and allows dual color object printing with maximum dimensions of the square base of 150 mm and a height of 150 mm. Before printing, the user can set almost all parameters affecting the printing process, including air temperature in heated chamber that is part of it. To verify the functionality several materials are tested, including ABS, PC and PEI. It also describes basic verification of the influence of selected parameters on the print result. Performs tensile tests confirming the influence of ambient temperature during printing on the quality of fiber connections, examines the final quality of the surface for each layer height and compares the resulting deformation of printed objects with other printers. The result of this work is a 3D printer capable of testing printing conditions for both existing and new types of materials with a range of user adjustable parameters.
Effect of air temperature on FDM 3D printing
Hrdlička, Martin ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The thesis deals with 3D printing by the FDM and ambient temperature on print quality. The thesis describes the principle of printing by the FDM method and the occurrence of errors caused by the influence of ambient temperature. The aim of the thesis is to design a heated chamber for RepRap Prusa i3 printer, its construction and subsequent testing of ambient temperature influence on print quality. To test the occurrence of the described errors, specific tests and materials are selected in the work. The result of this work is the recommended ambient temperature in the heated chamber for improved FDM printing.
Vytvoření funkčního přípravku pro namáhání materiálu v tlaku
DOLEŽAL, Petr
The bachelor thesis deals with the design of a fixture for testing material in compres-sion on a universal testing machine. The thesis firstly introduces engineering materials and their key properties, which is closely related to the testing of mechanical proper-ties. Another theoretical part introduces the SHIMADZU AG-50kMX-plus universal testing machine for which the fixture is designed. The modelling of the jig and the creation of drawing documentation was designed in Inventor Professional 2019, which is presented in detail in the theoretical part. After designing, the jig was fabri-cated so that its experimental use could take place. Plastic test samples were tested and printed on the school's Průša MK3S+ 3D printer. The aim of testing them was primarily to determine the functionality of the product.
Desigm of the 3D printer for print material with carbon fibers
Chaloupka, Matyáš ; Kočiš, Petr (referee) ; Pavlík, Jan (advisor)
The presented thesis deals with FDM 3D printing method with emphasis on printing carbon fiber reinforced plastic (CFRP). The aim of this thesis is to engineer the FDM 3D printer designed for printing CFRP and to execute the experiment targeted on comparison of CFRP material properties against commonly used 3D printing plastics such as PLA, ABS, PET etc. The device designed in this work has printing area of 200 x 200 mm with maximum height of the object of 200 mm. The printing bed is heated and the whole device is enclosed. There are two kinds of experiments carried out within the thesis. The first one is focused on tensile strength and Young's modulus of selected materials, while the second experiment compares Charpy's impact strength of specimen with different infill percentage on two selected materials, PET and PET filled with chopped carbon fiber.
Effect of air temperature on FDM 3D printing
Hrdlička, Martin ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The thesis deals with 3D printing by the FDM and ambient temperature on print quality. The thesis describes the principle of printing by the FDM method and the occurrence of errors caused by the influence of ambient temperature. The aim of the thesis is to design a heated chamber for RepRap Prusa i3 printer, its construction and subsequent testing of ambient temperature influence on print quality. To test the occurrence of the described errors, specific tests and materials are selected in the work. The result of this work is the recommended ambient temperature in the heated chamber for improved FDM printing.
Determination of mechanical properties of low carbon and low alloy steels via small punch tests at room and low temperatures
Závodský, Peter ; Pantělejev, Libor (referee) ; Válka, Libor (advisor)
The presented diploma thesis deals with an innovative material test, so called Small Punch Test. There are main principles, advantages and limitations of the test stated in the thesis. There are stated also correlation procedures in order to obtain standard mechanical properties. A test fixture design has been done in order to perform test procedures at temperature range from 80 to 25 °C. Twelve experimental curves have been obtained from the test and typical quantities have been evaluated. The different accuracy of correlations with standard mechanical properties has been obtained using different correlation equations.
Design of 3D printer for high strength materials
Žlebek, Michal ; Dočkal, Aleš (referee) ; Koutný, Daniel (advisor)
Thesis deals with FDM 3D printing method and testing capabilities of optimum printing conditions for different materials. The aim of this work is to design and manufacture of experimental device that enables printing to investigate these conditions. A device designed in this work was named UK3DP and allows dual color object printing with maximum dimensions of the square base of 150 mm and a height of 150 mm. Before printing, the user can set almost all parameters affecting the printing process, including air temperature in heated chamber that is part of it. To verify the functionality several materials are tested, including ABS, PC and PEI. It also describes basic verification of the influence of selected parameters on the print result. Performs tensile tests confirming the influence of ambient temperature during printing on the quality of fiber connections, examines the final quality of the surface for each layer height and compares the resulting deformation of printed objects with other printers. The result of this work is a 3D printer capable of testing printing conditions for both existing and new types of materials with a range of user adjustable parameters.

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