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Effect of vibrations on fatigue life of L 410 NG airplane flaps
Častulík, Lubomír ; Katrňák, Tomáš (referee) ; Vlček, Dalibor (advisor)
Diplomová práce se zabývá návrhem metodiky pro stanovení vlivu vibrací na únavovou životnost a rychlost šíření trhlin u vztlakových klapek letounu L 410 NG. Úvodní část práce obsahuje potřebné informace o letounu a zatížení vztlakových klapek. Poté jsou popsány prostředky pro kvantitativní popis únavového procesu s využitím napěťového přístupu. Pro objasnění navrhované metodiky je uvedena definice obecného náhodného procesu a popis postupů aplikovaných na data získaná z letového měření. Hlavní část práce obsahuje podrobný popis navržené metodiky. Ta je zároveň aplikována na data získaná z měření na letounu L 410 UVP-E20.
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Methodology of analysis of wing structure with respect to Widespread Fatigue Damage (WFD)
Bulko, Martin ; Augustin, Petr (referee) ; Vlček, Dalibor (advisor)
Diplomová práce popisuje metodiku výpočtů částí náchylných k rozvoji mnoho-ohniskového únavového poškození (WFD). Nejdříve se práce zabývá rozborem předpisů letové způsobilosti souvisejících s WFD pro letadla certifikovaných podle FAR 23 v kategorii commuter. Následuje popis metodiky únavového výpočtu a predikce šíření trhliny. Dále jsou popsány řešení pro výpočet faktoru intenzity napětí pro základné konfigurace trhliny, tam kde to bylo možné v uzavřeném tvaru, jinak ve formě tabulky. Hlavní částí práce je návrh algoritmu AIMA schopného provést kompletní analýzu části náchylné k rozvoji únavového poškození na více místech (MSD). Model se validoval únavovou zkouškou vzorku přeplátovaného spoje dolního panelu křídla. Následně byla analyzována reálná konstrukce spoje dolních panelů křídla letounu L 410 NG.
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Criteria for fatigue evaluation of riveted joints
Adámek, Petr ; Augustin, Petr (referee) ; Vlček, Dalibor (advisor)
This thesis describes proposal of a methodology for evaluating fatigue life of riveted joints. The first section summarizes the theory used to evaluate fatigue life, description of the structure of operation load spectra and construction principles for the design joints for optimum durability. The second part of the thesis focuses on the proposal of a methodology enabling analytical solutions in closed form suitable for the initial structural design and also numerical solutions for use in detailed analyzes of the structure. The applicability of the methodology is demonstrated on an example of analysis of a real structural detail and subsequent comparison of the analysis with available test results.
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Technical documentation of parts made from composite materials
Vlček, Dalibor ; Urík, Tomáš (referee) ; Klement, Josef (advisor)
This bachelor thesis describes the rules applicable for creation of technical documentation of parts made from composite materials. In the first part of this paper a brief characteristics of composite materials is introduced. In the subsequent parts the thesis deals with the basic principles of creating the documentation according to the European standard EN 4408. The main aim of this thesis is to summarize the rudimental conventions that refer to drawing of technical documentation of aircraft composite parts.
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Reflections on the Global Order after the End of the Cold War: the Perspective of Francis Fukuyama and Samuel P. Huntington
Jurásek, Miroslav ; Veselý, Zdeněk (advisor) ; Lehmannová, Zuzana (referee) ; Vlček, Dalibor (referee) ; Gombár, Eduard (referee)
The times coming with the End of the Cold War were very turbulent. Politicians had to take into the consideration lots of scenarios and the next global trends to make correct decisions. Most of the very numerous visions of the future global order followed more or less the twofold pattern: order or anarchy. "The End of History and the Last Man" and "The Clash of Civilizations and the Remaking of World Order" written by two prominent American political scientists Francis Fukuyama and Samuel P. Huntington and published at the beginning of the 90s are the most representative works that fit into this pattern. These provocative and controversial theories have been criticized and empirically challenged by many on one side, on the other side it hasn't impeded others to use them as a starting point for their next analyses. This dissertation thesis is a contribution to the debate between the dissenters and the supporters of these theories from a predictive point of view. Through the research theoretical methodology it is argued that the examined theories are still valid even nowadays because their theoretical essence (or hard core in the Lakatosian research program) has not been refuted yet. Nevertheless, the hard core of the theories determines their very specific character which puts forward the importance of the factors labelled in the Lakatosian framework as an external history of a science. These factors organized according to the Mehtas criteria of so called strong idea are, especially in the social sciences, decisive for how a theoretical construct is accepted in a broader non-academic context. It is demonstrated that both theories fulfill all criteria to be very influential in practice, although the idea of clash of civilizations is even more powerful in this respect. The specific features of all theories are illustrated on two case studies: Union of South American Nations and Shanghai Cooperation Organization. Firstly, the selection of these case studies is justified and secondly, the anomalies in terms of the Lakatosian methodology are identified and then explained. There have been found no unexplainable anomalies, which practically confirms the validity of both research programs on one side, on the other side it facilitates a better assessment of the studied theories in a sense of their interpretative scope and possibilities.
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International Dimension of Immigration Policy
Novotná, Markéta ; Veselý, Zdeněk (advisor) ; Eichler, Jan (referee) ; Vlček, Dalibor (referee) ; Drbohlav, Dušan (referee)
The relation between the immigration policies and state sovereignty in the European Union (EU) is both a most topical and controversial issue. The dissertation is conceived as a disciplinary interpretative study based on the concept of four types of sovereignty by S. Krasner. This approach allows to interpret the seeming contradiction between a state perceived as a sole actor in the area of immigration policy and the communitarization of the immigration policy at the EU level. By using the analysis of discourse as well as of practice, this thesis acknowledges shifts of power to the EU, but stresses that these shifts represent strengthening of other factors of power and control at the same time. Thus, in certain, particularly security, aspects, European harmonization of immigration policy can reinforce state sovereignty. It applies to the external as well as internal dimensions of the EU immigration policy that a part of the policy remains to be decided at the national level. Nevertheless, also the communitarized area offers the member states a significant room for discretion. Thus, there is still considerable tension between the idea of solidarity between member states on one hand and their national interests on the other and the common European immigration policy remains to be achieved in future.
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Ideologies and their Impact on Political Development in Turkey
Cupalová, Marcela ; Prorok, Vladimír (advisor) ; Lehmannová, Zuzana (referee) ; Vlček, Dalibor (referee) ; Hynčica, Pavel (referee)
The aim of the work is to analyze and evaluate the ideological background of Turkish society and its influence on economic and political development of Turkey and thus to bring a new complex explanation of Turkish problems on the way to the EU and prospects of their solution. The work maps socioeconomic development of the Ottoman Empire and Turkey, the influence of specific Turkish values on this development and the political efforts to modernize the system. On the basis of this analyse, it evaluates Turkish potencial for adoption of new values and their application for modernization and democratization of society. Work also analyses values of Turkish people, discovered by various opinion polls, and compares them with the standards of the EU. Consequently, it explains the differences in values by analysis of Turkish ideologies and the cleavages between them. Eventually, the work maps ideological fundamentals of contemporary Turkish political system, their reflection in Constitution, laws and political practice. It also concentrates on ideologies and goals of Turkish political parties and movements, their influence on Turkish society and their compatibility with the standards of the EU. The principal aim of this analysis is to evaluate influence of specific Turkish ideologies on Turkish political and economic development and fulfilment of political standards of the EU.
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Sub-Regional Cooperation and European Integration. The Role of the Visegrad Cooperation and Baltic Cooperation in the Architecture of the European Union
Zelenická, Zuzana ; Veselý, Zdeněk (advisor) ; Krines, Vlastimil (referee) ; Vlček, Dalibor (referee) ; Had, Miloslav (referee)
The aim of this work is to analyse the mutual relationship of sub-regional cooperation structures and the dominant integration structure: the European Union. We follow the evolution of mutual relationship between Visegrad Cooperation and the EU from the establishment of such sub-regional cooperation structure until today. Similarly, we analyse the relationship of the Baltic Cooperation and the EU. Later, we compare the evolution of both cooperation types on the background of their integration into the EU and thus identify their specifics. In the final part, we widen the research scope on the whole European Union and even more on the European continent and we try to identify and categorize existing cooperation and integration structures in this wider European region. As a conclusion we introduce brief characteristics of sub-regional cooperation and integration process in Europe in the relation to the EU and suggest future development.
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Bed Reactor, Part IV, Final Research Report, Task C and G, Project FT-TA/039, 2007
Jiřičný, Vladimír ; Staněk, Vladimír ; Stavárek, Petr ; Vychodilová, Hana ; Vlček, Dalibor ; Karfík, David ; Tukač, V. ; Chyba, V. ; Lederer, J. ; Kolena, J. ; Kubička, D. ; Hanika, Jiří
The results of the research of hydrogenation reaction running in Trickle bed reactor (TBR) under condition of steady state or periodic pulse modulation of liquid feed are presented in the report. The effect od pulse period and split on reaction conversion including optimal operation conditions was determined. Yhe extensive hydrodynamic study of TBR was conducted and judged in terms of pressure drop profiles along the catalytic layer, liquid hold up and residence time distribution. Results of hydrodynamic study confirm determination of optimal operating conditions related to maximum conversion.
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