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Measuring system for analysis of pressure relations in spray lubrication device
Popelka, Michal ; Vaverka, Michal (referee) ; Nevrlý, Josef (advisor)
This thesis deals with the selection and design layout of the measuring system for the analysis of pressure and flow conditions in the lubricating system and a particular pressure and flow sensors. Sensors were selected according to suitability for use in these conditions of measurements (pressure, flow, etc.). Work also includes the review and selection of data bus for converting the output signal from the sensor to the evaluation unit (computer). It also includes selection of the measurement software to analyze the values arriving from the sensors into the measurement computer, find the optimal conditions for lubrication of wheel flanges of rolling stock.
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Overview of rapid prototyping technology for metallic parts
Žaba, Tomáš ; Nevrlý, Josef (referee) ; Paloušek, David (advisor)
The aim of this bachelor paper is to make a survey of Rapid Prototyping methods which enable workability of metal materials. It explains the principles of older methods as well as the latest ones including Selective Laser Sintering, Direct Metal Laser Sintering, and Laser Engineered Net Shaping, Direct Metal Deposition and Electron Beam Melting. The paper presents the examples of practical applications on component parts. The latest equipment and machinery available on present market and their technical specification are listed at the end of the description of individual methods. The paper is completed with visual documentation. The final part of the paper contains the analysis of gained pieces of knowledge and future possible development is outlined.
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Experimental apparatuses for studying rolling contact fatigue life
Popelka, Ondřej ; Nevrlý, Josef (referee) ; Šamánek, Otakar (advisor)
The bachelor thesis consist the overview of experimental fatigue apparatuses that are designated for the lifecycle fatigue study of machine parts. It describes two basic devices, discs machines and rolling element machines. The specific of these devices is their use for study of fatigue damage resistance of machinery materials. Their disadvantage is non-complexity and limited possibility of usage. They are designed for basic tribological research (e.g. point contact, line contact, etc.). Complex experimental fatigue apparatuses are often expensive so they can’t be used in regular study.
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Contemporary design of rotary compressors, prevention of their surge
Kopáček, Petr ; Roupec, Jakub (referee) ; Nevrlý, Josef (advisor)
The bachelor’s thesis deals with design of rotary compressors with analyse prevention of their surge. The first part is concerned with description of basic terms, which are important to understanding studied problem. Then, attention is given to literature, from which are gathered needed data. A description of design of rotary compressors aimed at prevention of surge follows. After that, the thesis is focused at antisurge control of rotary compressors, with consideration to Greitzers model.
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Lubrication of combustion engines in 21st century
Súkeník, Juraj ; Nevrlý, Josef (referee) ; Křupka, Ivan (advisor)
Lubrication is inseparable part of internal combustion engines. It primary influences operation, lifetime and efficiency of internal combustion engine. This bachelor`s thesis summarizes present state and future view of internal combustion engine lubrication. The work deals with tribology of several engines sections and composition of present lubricants for internal combustion engines.
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Vibration damper development and innovation of a laboratory stand
Filipi, Jaroslav ; Mazůrek, Ivan (referee) ; Nevrlý, Josef (advisor)
Bachelor work deals with description and functionality of vibration dampers. Since the vibration dampers is a wealth of species, work is focusing on the dampers used in cars known as shock absorbers suspension. I have described conventional shock absorbers suspension and modern shock absorbers suspension. Furthermore, I described active chassis. High-quality equipment is very important for the future development of dampers. I propose possible ways of innovation existing laboratory stand.
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Wind power station tower - calculation
Stein, Pavel ; Vrbka, Martin (referee) ; Nevrlý, Josef (advisor)
The target of this labour is to give summary of contemporary level of construction of wind power station tower. The first part describes importance and progress of alternative sources of energy, especially wind energetic in Czech republic. Next point concerns some construct options of wind power station tower and its basic elements. Close of the work is oriented to modern forms in problems of the wind power station tower and indicates options of modern development.
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