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Welding of galvanized sheets using hybrid Laser-TIG technology
Antes, Jiří ; Kubíček, Jaroslav (referee) ; Mrňa, Libor (advisor)
ANTES, Jiří: Welding of galvanized sheets using hybrid Laser-TIG technology This master thesis deals with the welding of zinced deep drawing steel using Laser-TIG technology. The first section of the thesis describes the topic from the theoretical point of view, which includes analysis of welding technologies, influence of used material and application of diagnostic methods. The second part of the thesis is focused on monitoring of welding current impact for weld quality of two types of joints.
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CNC Laster Cutter Integration with ERP information system
Černocký, Libor ; Lacko, Branislav (referee) ; Dobrovský, Ladislav (advisor)
This bachelor's thesis deals with the compatibility of production machines with the information system in the context of company digitization process. The theoretical part analyze the structure and variability of information systems. The principle of the laser and the characteristics of the most used types of lasers in CNC laser machines are described as well. There is also a definition of the popular term called Industry 4.0 from the perspective of digitization. The practical part presents the researched company from its beginnings to the present. There will be specified current control systems and production facilities which will be interconnected into synchronized control modules in design of the ERP information system. The SWOT analysis will show what effect the proposed information system would have, especially from the point of view of digitalization of the company.
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A small and medium companies approach to the use of laser machines
Faltus, Tomáš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis focuses on laser technology. It presents the principle and types of lasers and the use of lasers in the industry. The process of cutting, welding, marking, drilling, and other operations that can be performed on the laser, are also discussed. The following part of the thesis defines a small and medium-sized company, and for each of them is given one situation from practice. For the small and medium-sized companies, their machinery and product range is listed. At the end of the bachelor's thesis, two examples of the production process are included and then further compared with each other. In the first case, it is a more complex part produced only by laser, and in the second instance, it is a simpler part produced by more machines.
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Welding with laser machines
Hanáková, Anna ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis is focused on the usage of laser beam and laser beam machines in engineering. It will be mainly focused on laser beam welding (LBW). History of laser, its development and principal are all described in the opening part of this bachelor theses. Types of lasers and its use are also included. Next part is focused on laser welding itself. Thus, welding methods, parameters entering the process and advantages/disadvantages of this technology are introduced. The last theoretical part includes material tests of welded joint and outputs of those tests. In the experimental part the process of laser welding itself is presented and the results of tensile test are described.
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Raman spectroscopy teaching equipment
Indra, Zdeněk ; Sedlák, Petr (referee) ; Škarvada, Pavel (advisor)
This thesis examines the principle of the Raman phenomenon and the function of the Raman spectrometer in order to build a low-cost Raman spectrometer assembly for school laboratory teaching. The thesis lists the important parts of the device and describes their key features. Subsequently, the selection of each component is discussed and a basic experiment is performed to verify the principle of this spectrometer. In the final part, a low-cost Raman spectrometer is constructed and tested thanks to the knowledge gained.
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Transmission of the radiofrequency signal over optical fiber
Barč, Andrej ; Dvořák,, Filip (referee) ; Barcík, Peter (advisor)
This work deals with the transmission of optical radiation modulated by a radio frequency signal through an optical fiber. Furthermore, it describes the principles of communication and area coverage. It points out the practical use of components located in the communication chain of this system. Explains the functionality of the properties and the division of individual components. It introduces the benefits and limitations of this system. It further describes the creation of a topology suitable for laboratory measurement of RoF technology. Provides experimental measurement of C-band parameters. Indicates the possible use of RoF technology using a wireless optical link. A part of the work is also a sample laboratory protocol.
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A laser beam in engineering
Šustr, Michal ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
The bachelor thesis focuses on the use of laser beam in the conditions of contemporary engineering, especially in cutting. Emphasis is put on the current technological possibilities of laser in industry, which are described in more detail. Cutting, welding, marking, surface cleaning and hardening, 3D metal printing and surfacing, all using laser beam, is mentioned in the bachelor thesis. The conclusion of the thesis is devoted to the productivity of work with the capacity of the laser together with the balance of operating and maintenance costs.
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Economic and Financial Evaluation of Investment Project
Chalabala, Martin ; Bártů, Dominik (referee) ; Hromádka, Vít (advisor)
The master thesis deals with the economic and financial evaluation of an investment project. The work will identify financial and economic evaluation methods, which will be applied to a specific project to acquire a laser cutting center. The work compares the possibility of acquiring a machine by conventional methods using own and external resources with a variant of acquiring a machine with a subsidy for a small business.
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