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Využití multi-body simulačních nástrojů ve výuce předmětu Dynamika
Lokšeninec, Ľuboš ; Houfek, Lubomír (oponent) ; Březina, Lukáš (vedoucí práce)
Bakalárska práca je vypracovaná za účelom modernizácie metód výučby teórie dynamiky pomocou multi-body simulačných systémov. Práca oboznamuje študenta s dostupnými simulačnými systémami a poskytuje návod ako zostavovať virtuálne modely sústav. So základnými možnosťami daného multi-body systému sa študent zoznamuje pomocou vypracovaných príkladov zameraných na valenie, kmitanie, moment zotrvačnosti. Práca nadväzuje na súčasné metódy výučby, pričom modely sú zostavené v systéme Matlab/Simulink s podknižnicou SimMechanics.
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Preparation and Characterization of Fluoride Conversion Coatings on Biodegradable Magnesium Alloys
Drábiková, Juliána ; Hadzima, Branislav (oponent) ; Brezinová,, Janette (oponent) ; Ptáček, Petr (vedoucí práce)
The submitted work is aimed at the unconventional fluoride conversation coating preparation on the AZ31, AZ61, ZE10 and ZE41 magnesium alloys by their immersion in Na[BF4] molten salt. The influence of the preparation parameters (such as temperature and time) on the quality of the fluoride conversion coating is investigated. Methods of light and scanning electron microscopy were used for the evaluation of morphology, chemical composition and thickness of the coating. Short and long-term corrosion tests were executed to analyze the corrosion performance in simulated body fluid solution at 37 ± 2 °C with and without the fluoride conversion coating. The short-term behavior was evaluated by potentiodynamic tests, namely by the linear polarization. Long-term performance was assessed by electrochemical impedance spectroscopy or immersion tests. The coating preparation parameters influence on the character of the formed fluoride conversion coating was defined based on the obtained results. The next part of the thesis deals with the description of the possible mechanism of formation and kinetics of growth of the unconventional fluoride conversion coating on the selected AZ61 magnesium alloy. In this part, further detailed analyses were carried out to investigate the microstructure and chemical composition of the fluoride conversion coating using focused ion beam, transmission electron microscopy and X-ray photoelectron spectroscopy.
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Preparation and Characterization of Fluoride Conversion Coatings on Biodegradable Magnesium Alloys
Drábiková, Juliána ; Hadzima, Branislav (oponent) ; Brezinová,, Janette (oponent) ; Ptáček, Petr (vedoucí práce)
The submitted work is aimed at the unconventional fluoride conversation coating preparation on the AZ31, AZ61, ZE10 and ZE41 magnesium alloys by their immersion in Na[BF4] molten salt. The influence of the preparation parameters (such as temperature and time) on the quality of the fluoride conversion coating is investigated. Methods of light and scanning electron microscopy were used for the evaluation of morphology, chemical composition and thickness of the coating. Short and long-term corrosion tests were executed to analyze the corrosion performance in simulated body fluid solution at 37 ± 2 °C with and without the fluoride conversion coating. The short-term behavior was evaluated by potentiodynamic tests, namely by the linear polarization. Long-term performance was assessed by electrochemical impedance spectroscopy or immersion tests. The coating preparation parameters influence on the character of the formed fluoride conversion coating was defined based on the obtained results. The next part of the thesis deals with the description of the possible mechanism of formation and kinetics of growth of the unconventional fluoride conversion coating on the selected AZ61 magnesium alloy. In this part, further detailed analyses were carried out to investigate the microstructure and chemical composition of the fluoride conversion coating using focused ion beam, transmission electron microscopy and X-ray photoelectron spectroscopy.
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Využití multi-body simulačních nástrojů ve výuce předmětu Dynamika
Lokšeninec, Ľuboš ; Houfek, Lubomír (oponent) ; Březina, Lukáš (vedoucí práce)
Bakalárska práca je vypracovaná za účelom modernizácie metód výučby teórie dynamiky pomocou multi-body simulačných systémov. Práca oboznamuje študenta s dostupnými simulačnými systémami a poskytuje návod ako zostavovať virtuálne modely sústav. So základnými možnosťami daného multi-body systému sa študent zoznamuje pomocou vypracovaných príkladov zameraných na valenie, kmitanie, moment zotrvačnosti. Práca nadväzuje na súčasné metódy výučby, pričom modely sú zostavené v systéme Matlab/Simulink s podknižnicou SimMechanics.
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