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Modulated ultrasonic water jet cutting – optimization of the liquid wave guide shape
Veselý, Radek ; Foldyna, Josef (referee) ; Habán, Vladimír (advisor)
High speed water jets have un-substitutable place in unconventional technologies in the machining of materials. Indeed its larger spreading is limited above all by its really high purchase price and also high costs of the operation. Certain possibility is represented by high-speed pulsating jets, which don’t put such a high pretension on arrangement of generating the pressure during the comparable operation. Probably the most effective method of the generating of pulsating water jets is ultrasonic modulation. This work could benefit to understanding spreading of pressure impulses between ultrasonic generator and output nozzle. Pulsating is solved by the numerical calculation using transfer matrix method.
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Waterjet cutting of material
Veselý, Radek ; Foldyna, Josef (referee) ; Habán, Vladimír (advisor)
This bachelor thesis describes principles of utilization of high-speed liquid jet for material machining. In the first part, basic classification of liquid jets and brief description of devices for generating high pressure liquid is presented. Next, using of continuous jets is discussed. Main scope of this work is oriented at the use of so-called pulsed jets, especially at ultrasonically modulated ones. Break-up of ultrasonically modulated high-speed pulsed jet into single pulses, impact of such pulse on the surface of disintegrated material and subsequent erosion in the impact area are described. The comparison of efficiency of modulated and continual water jets is summarized in the last part of the thesis.
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Marketing Research
Veselý, Radek ; Pazdera, Přemysl (referee) ; Šimberová, Iveta (advisor)
This thesis lays emphasis on the satisfaction of the customer and building up relationship between the company and the customer. This thesis contains measurement of customer satisfaction with products and services offered by company CIPRES FILTR BRNO, Ltd. and the improvement suggestion of these services. Objection of marketing research is increase competitive advantage of company and attain better stability on extended industry market.
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Solution of coal unloading pit dedusting
Zlámal, Tomáš ; Veselý, Radek (referee) ; Štroner, Marek (advisor)
The present bachelor thesis deals with the draft solution of coal unloading pit dedusting. In the proposal, the necessary suction power and the individual sources of dust are determined and appropriate suction devices are designed. A CARM GH filter unit was designed for exhaustion, with a filter medium in the form of cloth bags. The entire dedusting system, including individual suction branches, was implemented into the operation of the unloading coal pit with the help of 3D software and an estimate of investment costs was made.
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The steel structure of a foot-bridge
Veselý, Radek ; Hron, Lukáš (referee) ; Štrba, Michal (advisor)
The topic of Master´s thesis is the design of steel foodbridge over the Morava river in Olomouc. Construction was carried out in two variants, one of which was chosen as the best option arched foodbridge is suspended orthotropic deck. Span bridge is 40m. Calculation of construction was carried out Scia Engineer 2015
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Trusses for Traffic Signes
Veselý, Radek ; Liškutín, Ivo (referee) ; Buchta, Stanislav (advisor)
The bachelor´s thesis deals with design of the constrution of trusses structures for vertical large format traffic signes over two-lane and three lane road lane highway. Constructoin is made up of horizontal space truss construction and column of steel tubes. The calculatin was performed manualy using Scia Engineer 2013. Loading consists of self-weight and wind load.
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Information System Selection
Matyščák, Michal ; Veselý, Radek (referee) ; Neuwirth, Bernard (advisor)
The goal of this bachelor’s thesis is to select new information system for young medium sized company, which provides marketing services. The company currently does not use any system. Primary goal is selection of new information system which will meet all company requirements. Selection will be based on the analysis of current situation in company and analysis of their processes.
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Vliv malolaktické fermentace na aromatický profil červeného vína
Veselý, Radek
This master's thesis is specifically concerned with the influence of malolactic fermentation on the aromatic profile of red wine. The literary (theoretical) part defines the malolactic fermentation and describes the volatile substances formed during malolactic fermentation. The practical part results from an experiment of various kinds of malolactic fermentation, where there are used two different strains of lactic acid bacteria. The experiment was carried out on three different varieties of wines which were sensorically and analytically evaluated.
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