|
|
Inspection of welded joints of loading ramps
Ertl, Roman ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
This master's thesis is focused on problem of welding of loading ramps and inspection of their welded joints. The aim of this thesis is to inspect the welds of loading ramps with regarding to the appearance of defects. The literature review of the research issues of the MIG welding technology and welding of aluminium and its alloys is described in this thesis. There is also described destructive and non-destructive inspection of welds that can be applied to inspection of loading ramps. Theoretical description is followed by an experimental part of the thesis. Experimental part is focused on the three destructive tests (the tensile, the macroscopic and the hardness test) of samples of loading ramps, which are made of EN AW-6005A T6.
|
|
|
Modern welding processes for pressure vessels
Sýkora, Jan ; Janík, Martin (referee) ; Kubíček, Jaroslav (advisor)
This paper deals with modern methods of welding pressure tanks. The aim of this bachelor paper is to describe individual methods assigned to welding pressure tanks. Foremost, different methods of welding are listed followed by procedure description of pressure tank production and lastly specification of welding procedure for individual welds is described.
|
|
|
Progress of welding in shipbuilding
Urban, Václav ; Kubíček, Jaroslav (referee) ; Kovář, Petr (advisor)
This work deals with the methods of welding in shipbuilding, summarises the basic techniques used for welding of the SAW, MAG, MIG, TIG, laser, Laser-Hybrid. It describes the properties of welded material. Especially the materials HY80 and HY100. It follows from the filler materials. In particular materials Spoolarc 95 and 120. Particular emphasis is placed on the method of Laser-Hybrid, its properties and use in shipbuilding. Finally, describes the method of welding aluminium using FSW, preparation of welded surfaces and producting of sandwich panels.
|
|
|
Design of flat pallet for automatic parking garage
Osmík, Jiří ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
Design of flat pallet for automatic parking garage. Parking and description of automatic parking systems. Welding and weldability of materials. Electric arc welding and welding by melting electrode in protective gas by MIG/MAG method, welding instruments. Design of parking palette calculation and calculation this palette by MKP method. Process of drawing documentation for parking palette. Design of welding process and WPS. Description of annealing and zinc coating. Economic-technical analysis of palette for automatic parking system production.
|
|
|
Welding of turbine rotor materials
Cvoligová, Hana ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
In the Visual - Weld and Sysweld programs, a simplified simulation of the welding process of the turbine rotor made of 27NiCrMoV 15-6 substance was performed. The numerical analysis took place at the equal temperature of preheating and it covered both minimal and maximal percent chemical composition. The simulation proved that the percent deviations of elements in the substance change the speed necessary for reaching of the bainitic structure. Simulation results were verified by a practical experiment. Two weld beads were welded to a base substance by MIG method: one bead at the temperature of 200°C, the other one at the temperature of 300°C, both with the same specific input caloric QS. Both micro and macrostructure of the base substance and TOO was evaluated, and the progression of the hardness was measured as well. The deviations fell within the acceptable 15% range.
|
|
|
Škoda Roomster welding procedure
Podstavek, Michal ; Daněk, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
Bachelor thesis elaborated in full-time bachelor's degree in B-STI. Mechanical Engineering describes the welding process of Skoda Roomster. The thesis describes the production process of welding a chassis and joining methods used on Skoda Roomster. Single methods of connecting includes the types of tests used by VW standards used in Skoda Auto. On the chosen joint is designed the WPS weld.
|
|
|
Approximation of Digital Circuits in Yosys Tool
Plevač, Lukáš ; Vašíček, Zdeněk (referee) ; Mrázek, Vojtěch (advisor)
The goal of this work is introduction of cgploss extension. This extension is extension for combinational logic circuits optimization in Yosys tool. Cartesian genetic programming is introduced in the first part of this work. Cartesian genetic programming is a design and optimization method that can be used for circuit optimization and approximation. This chapter introduces representation of combinational logic circuits for Cartesian genetic programming. The next chapter introduces Yosys tool and possibilities of the Yosys extending. The proposed 'cgploss' extension is introduced in the next chapter. The chapter also provides details about the implementation and the usage. The last chapter tests cgploss extension and compares representation of combinational logic circuits.
|
|
| |
|
|
Loss of strength during welding aluminous alloys AW 6060
Sklenář, Martin ; Vaněk, Mojmír (referee) ; Sigmund, Marian (advisor)
The aim of the bachelor thesis is to qualify the welding procedure according to the standard ČSN EN ISO 15614-2. At the beginning of the work is introduced a company with which was this thesis made. This is followed by an assessment of the issue of aluminum. Furthermore, the mechanical properties of aluminum are discussed. Follows by part about welding specially about aluminium welding. In the practical part the samples were welded and subsequently evaluated, then the design and qualification of the welding process was made. In conclusion, the possibilities and results that have been achieved are summarized.
|
|
| |
guest ::
