National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Lighting systems of vehicle
Žlebek, Michal ; Guzej, Michal (referee) ; Štětina, Josef (advisor)
The aim of this work is to explore the development of headlamps and focus on the problem of cooling. The first part is devoted to automotive lighting and to headlamps generally. It deals with history, manufactures, functions and basic construction of headlamps. The next section describes the types of headlamp and the procedure for its construction depending on used light source. In semifinal part can be found explanation of heat origin in LED and with the help of heat transfer is described its spreading. At the end is this work dealing with problems of cooling when using LEDs. It shows view of cooler and explaining how important is to use simulations during heat spreading counting.
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.
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.
Lighting systems of vehicle
Žlebek, Michal ; Guzej, Michal (referee) ; Štětina, Josef (advisor)
The aim of this work is to explore the development of headlamps and focus on the problem of cooling. The first part is devoted to automotive lighting and to headlamps generally. It deals with history, manufactures, functions and basic construction of headlamps. The next section describes the types of headlamp and the procedure for its construction depending on used light source. In semifinal part can be found explanation of heat origin in LED and with the help of heat transfer is described its spreading. At the end is this work dealing with problems of cooling when using LEDs. It shows view of cooler and explaining how important is to use simulations during heat spreading counting.

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