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Possibilities of dispersed reinforcement for lightweight concrete
Novotná, Aneta ; Žítt, Petr (referee) ; Láník, Jaromír (advisor)
Master´s thesis deals with some problems associated with utilisation of lightweight concrete from the porous aggregates in the load – carrying structures. The thesis focuses on the possibilities of the increase of the cement composites toughness using dispersed reinforcement. Lightweight concretes were reinforced with a combination of different lengths of polypropylene fibers Forta Ferro. There were used polypropylene fibers of three lengths 19, 38, 54 mm. The thesis is divided into theoretical, experimental and static part.
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The use of composite materials in civil aviation
Nožička, Radek ; Molliková, Eva (referee) ; Němec, Karel (advisor)
This thesis is written in a research form and it’s focused on the usage of composite materials in civil aviation with the emphasis on the structures of airliners. The first chapter deals with the basic classification of composites and the description of the particular kinds of matrices and reinforcements. The second chapter gives a brief introduction to the history of the usage of composite materials at the airliners, decribes the classification of the aircraft structure, discusses the most widely employed composite materials in aircraft structures and offers an overview of various manufacturing methods.
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Mechanical properties of fiber reinforced composites for automotive applications
Bayer, Adam ; Žídek, Jan (referee) ; Jančář, Josef (advisor)
Bachelor’s thesis deals with studying mechanical features of fiber composites. As a matrix was chosen PMMA and as reinforcement was chosen glass fabric. Theoretical part sums up contemporary issues of polymer composites in automotive industry such as their production techniques and methods of impregnation. In experimental part were prepared samples by block polymerization of 30 % solution PMMA in monomer with initiator by 65° Celsius warmth oath, when was fabric directly unfolded in pre-polymer solution. On these samples were executed tensile tests by testing device Zwick and these samples were compared with results of theoreticaly calculated values.
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Manufacturing Process and Applications of Composite Materials for buses parts
Rusek, Jan ; Julišová, Martina (referee) ; Němec, Karel (advisor)
The aim of the bachelor’s thesis is the evaluation and demonstration of the usability of composite materials in the bus industry. The first chapter provides an overview of selected types of composite materials, basic classification, description of their parts and demonstrations of methods of production. The second part of the bachelor’s thesis is focused on the evaluation of the advantages and disadvantages of using composite materials. The last part is focused on the producion of the sample from fiberglass.
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Mechanical properties of Nodular Cast Iron prepared by method Tundish and process Initek
Vítek, Radovan ; Hotový, Ivan (referee) ; Věchet, Stanislav (advisor)
This bachelor thesis deals with a properties and production of nodular cast iron. The first section describes the classification, distribution and structure of nodular cast iron. The second part is focuses on the description of nodular cast iron, modification, inoculation and production. A strong effort is made on the production of nodular cast iron using the Tundish Cover method and the Initek process. In conclusion, the structure of the material is evaluated on samples that were delivered for metallographic analysis. The final evaluation of the structure of the material is used to compare the mechanical properties of a nodular cast iron produced by Tundish Cover method and Initek process.
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Carbon Fibre Composite Materials
Mikula, Martin ; Molliková, Eva (referee) ; Němec, Karel (advisor)
In the first part of a Bachelor's work there is a general introduction with composite materials. These materials are seperated on the basis of matrix kind. The production of composite materials is described as well. The second part is focused on the carbon fibre materials in more detail. The application of composite materials in aviation industry is in the third part of the Bachelor's work.
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Historical landscape genesis in sub- mountainous areas.
MIHALČÍKOVÁ, Zdeňka
The aim of this work was to define changes in the landscape from 1949 to the present in the area of Zdíkov which is situated near Vimperk in the Bohemian Forest. The representation of elements land use was established- that are forests, arable land, water areas, water-courses, settlements, road network and permanent grassland - on each of the three aerial photographs from the years 1949, 1973 and 1988.The representation of elements land use was compared in each year on the basis of these photographes and the change and transformation of the original character of the landscape were defined in a given time horizon. The results were worked up graphically.
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