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Analysis of Whirling of Gas Flow within the Specimen Chamber of ESEM
Bayer, Robert
The usage of an Environmental scanning electron microscope (ESEM) brings the possibility of studying many kinds of materials and chemical reactions never studied before. In this article there are compared and analyzed several simulation results of gas flow in the specimen chamber of ESEM with high gas pressure throughout the whole volume except on its optical axis, where low gas pressure is needed.
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Energy yields per one hectare of land in the South Moravian Region
Plášek, Tomáš ; Bayer, Robert (referee) ; Jandová, Kristýna (advisor)
This bachelor thesis compares methods of producing elektricity in biogas plant, in thermal power plants by burning biomass, in solar power plants and compares it with production of energy of fuel cells and the energy from biofuels, like biodiesel and bioethanol. It compares the energy yields of different energy production methods and evaluates their advantages and disadvantages. It compares the energy content of these fuels by model vehicle range.
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DLP LCD 3D Printer
Brandejs, Petr ; Jaššo, Kamil (referee) ; Bayer, Robert (advisor)
This project deals with DLP 3D printing and designing a 3D printer based on this technology. It consists of a glimpse across different 3D printing technologies, their comparison and reasoning behind chosing a DLP printer. Project then follows with design of individual component based on specific parameters needed for this application and price optimization. It ends with a review of the machine.
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Influence of Different Microetchants in Examination of Intermetallic Layers Morphology
Sčensný, Ľudovít ; Bayer, Robert (referee) ; Starý, Jiří (advisor)
This bachelor’s thesis deals with the problematics of micro-etchants and their composition. The suitability of different solutions intended for observing morphology of intermetallic compounds in a soldered joint is examined. Three surface finishes coated with solder alloys are used to form representative samples. The prepared and processed samples in the form of a metallographic specimen are subsequently suitable for examining the microstructure of the etched surface. Laser scanning microscopy is used to analyse and evaluate morphology of the shown intermetallic compounds.
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Smoothing device for FDM 3D prints
Dubský, Jan ; Čudek, Pavel (referee) ; Bayer, Robert (advisor)
This bachelor’s thesis deals with a design of a device that would smooth out 3D prints, made of various materials, using FDM 3D printers. It explains the principle of 3D printing and describes technologies used in 3D printing. In this work is an overview of materials used for 3D printing and of some selected organic solvents. It describes methods of vapour smoothing and aerosol smoothing that can be used for smoothing out of 3D prints surface. The vapour smoothing method was experimentally tested using these solvents: acetone, dichloromethane, chloroform and tetrahydrofuran. The aerosol smoothing method used a solution of acetone and dichloromethane in the ratio of 1:1. Both methods were tested on samples made of PLA, ABS, PETG and SBS. This paper describes the design of a device for smoothing of 3D prints with regard to the chemical compatibility of used construction materials and ease of use of the device.
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Filament mixer with variable contribution of input materials for FDM 3D printers
Hráček, Michal ; Jaššo, Kamil (referee) ; Bayer, Robert (advisor)
This bachelor thesis deals with the theory of 3D printing and 3D printers and the possibility of mixing two filaments. The work is focused especially on extruder, which is one of the main parts of 3D printer, but also on mounting and cooling the print head. In the extruder, the filament is fed and subsequently melted. Furthermore, the work mentions the problems of stepper motors, describes the used components for the practical part of the work and implementation of the entire device from PCB design, writing FW, to design mechanical parts.
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Using the infrared camera in the measuring technique
Bayer, Robert ; Šedivá, Soňa (referee) ; Bejček, Ludvík (advisor)
The goal of this thesis is to get acquainted with contactless methods of measuring a temperature and give the reader an idea of it. Next goal is to master the working with IR visual display terminal FLUKE Ti55FT (and program equipment SmartView) a describe it to the reader too. Last goal is to translate the booklet "Introdution to Thermography Principles", published by FLUKE company, which will be enclosed in electronic form to the thesis in the appendix.
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Extensions introduced QMS company SPOJMONT Ostrava Ltd
Bayer, Robert ; Jandová, Kristýna (referee) ; Polsterová, Helena (advisor)
The aim of this thesis is to familiarize with tools used in quality management and with methods of their application and to apply some of the tools in a real company. Among these tools there are a handbook for integrated management system of QMS on the basis of standard EN ISO 9001:2008, EMS on the basis of standard EN ISO 14001:2005 and ČSN OHSAS 18001:2008, 5S system, process FMEA and application of Pareto analysis on complaints. All the tools are attached to the dissertation thesis in electronic appendixes.
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Filament recycler for FDM 3D printers
Neuwirth, Karel ; Bayer, Robert (referee) ; Jaššo, Kamil (advisor)
The first part of the project is focused on various types of 3D printing technology, especially FDM technology, where is possibility of recycling printed material. Next is a description of the most used materials for printing by FMD technology and a description of the production of filament using screw extruders. Several devices were selected for recycling and production of filament from FDM printing, for which their technological procedure in recycling is described. Subsequently, the work deals with the design of a device for melting plastic using a screw extruding device, including the possibility of measuring and regulating the output. In the last part, according to the design, the device is assembled and tested.
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