|
|
Analysis of Tube Bulging Process
Zdráhala, Radim ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
The diploma thesis is focused on the analysis of the behavior of the thin-walled tubular test specimen during the technological test of the liquid draining of the tubes. The test specimen ‘in the form a tube was made of austenitic stainless steel 17 240 (1.4301, X5CrNi18-10). During the experiment, the radial expanding tool was quasi-statically charged by the internal fluid pressure. In the introductory part, the thesis focuses on the stress-strain description of the method of tube bulging and possible ways of detecting the strain of material during forming. The experimental part is primarily focused on the analysis of the test sample that was obtained from the experiment. Theoretical approaches were used to analyze the real test sample to detect strain and stress in material, numerical simulation of the bulge process and 3D ATOS scanning device, which helped clarify behavior tube during bulging process. At the end of the thesis is proposed possible design of the tool. This modification should contribute in the future to the full functionality of the radial expanding tool, or the bulging of the tube by liquid.
|
|
|
Autonomous liquid storage with cooling system
Boch, Jan ; Kaczmarczyk, Václav (referee) ; Husák, Michal (advisor)
This bachelor thesis deals with the design of an autonomous liquid storage cell with a cooling system. The cell is part of a larger project called the Self-Acting Barman. The cell follows the basic principles of Industry 4.0 and is also an example of a batch process according to the ANSI / ISA-S88 standard. At the beginning, the theoretical part describes important ideas and principles related to this project. The next chapter then discusses the construction design of the cell and its physical implementation. Parts were modeled in the Siemens NX program and subsequently these parts were created using 3D printing technology. In the next chapter the individual instrumentation used in the cell is described. In the last two chapters, the electrical connection of the whole cell and the software of the cell are then discussed. The cell wiring diagram is created in the E-Plan program and the cell software was created in the Siemens TIA Portal program.
|
|
|
Monitoring the impact of ultrasonic energy to the leveling of thick film pastes
Pokluda, Tomáš ; Buršík, Martin (referee) ; Řezníček, Michal (advisor)
This bachelor thesis is focused on the problem of levelling of a profile by ultrasound after printing thick layer pastes and on electrical resistance and geometrical dimensions changes. It describes a creation of hybrid integrated circuits, thick film technology and the screen printing method. It also includes basics of fluid physics, basics of fluid rheology, and description of principles of the used ultrasound transducer. Records of the levelling measurements are presented through the use of photographs, comments, tables and graphs.
|
|
|
Temperature control in the liquid thermostat using Atmel ATmega328 microcontroller
Hanulík, René ; Šandera, Josef (referee) ; Adámek, Martin (advisor)
This bachelor‘s thesis familiarizes reader with the issues of temperature control and measurement in the enviroment of liquid thermostat. Thesis describes some kinds of temperature sensors, their physical principes and choices of using them. There is also described properties of ATmega328 controller and communication resources. This thesis deals with implementation of bath thermostat controller unit and describes his software equipment together with PC controlling application.
|
|
| |
|
|
Self-excited and forced pulsations of liquid in axisymmetric domain
Skopalová, Kristýna ; Habán, Vladimír (referee) ; Pochylý, František (advisor)
The diploma thesis deals with the determination of the self-excited and forced pulsation of the real fluid in the cylindrical area and in the annulus. It also focuses on a case of resonance that has an unfavorable effect on the hydraulic circuit. The result of the thesis is the analytical relations for determination of self-excited and forced shapes of flow and pressure in the closed cylindrical area, for two selected variants of kinematic excitation. In the first variant, excitation is performed in the form of a sinus function. The second variant is expressed as a sawtooth function. A pulsation of the fluid caused by the movement of the body is described for the annulus. Further, in this area, the shapes of fluid pulsation are solved without external excitation.
|
|
|
A study of liquids behavior in rotating vessel
Tuhý, Marek ; Šedivý, Dominik (referee) ; Fialová, Simona (advisor)
The presented bachelor thesis deals with the study of liquids behaviour in rotating vessel. The aims of the thesis are theoretical analysis and recherche of the behaviour of liquids in a rotating vessel, design and construction of an experiment, its implementation and evaluation. The hydrostatic knowledge was found in the theoretical part, the practical part was placed in the laboratory of fluid engineering on the assembled experimental track.
|
|
|
Utilization liquid in tubes shaping
Vilda, Dalibor ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
This publication elaborates on work about technologies, which utilize liquid as forming media in tubes shaping. There is a description of methods like low-pressure, high-pressure and pressure-sequence hydroforming and radial expanding by a liquid. A part of the work is also evaluation of individual methods, their advantages and disadvantages and examples of use in a practice.
|
|
|
Vehicle Hydropneumatic Suspension
Koudelka, Roman ; Hejtmánek, Petr (referee) ; Blaťák, Ondřej (advisor)
The main task of this bachelor’s thesis is introduction of readers with main principles of hydropneumatic suspension. The introductory part, which aims to outline the historical background of the system, continuously follows the description of the principle of its function. This part also contains the typical features of this suspension system. This type of suspension is used at different types of vehicles, the specific applications are mentioned in the next chapter. The last section is about designing suspension for special military vehicle.
|
|
|
Measurements of small flow rates
Lorenc, Dominik ; Šedivá, Soňa (referee) ; Mancl, Vlastimil (advisor)
The thesis deals with the extension of the laboratory fixtures with a~measuring track designed for the measurement of small fluid flows, on which the thermal flowmeter is tested. The used calibration methods are examined and the track is then subsequently constructed. A~measurement operating program is also developed to set the measurement parameters and to store the measurement data in the required format. The parameters and characteristics of the reference scale used and the thermal flowmeter provided are then measured on the constructed track. The measurement results are presented and the uncertainties of the selected flow rates are determined.
|
guest ::
