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The Tool for a Radial Expanding of Tubes by Liquid
Horák, Michal ; Lidmila, Zdeněk (referee) ; Peterková, Eva (advisor)
The submitted diploma thesis is focused on problematic of a radial expanding of tubes. In the first part of thesis, there is a summary of possible theoretical formulas for determining the stress-strain material parameters for biaxial bulging test of tube by liquid. Also there are showed several options for testing tools used in research abroad. The work also contains technological and control calculations for the selected test sample from the tube of steel 17 240 (1.4301). At the end of thesis, there are key points for tool design and there is also presented the proposed the test tool for a radial expanding of test sample of tube to the free space and with firmly fixed the ends of tube in the tool.
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Survey and Diagnostics of Reinforced Concrete Structure
Haloun, Jan ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The first part of this diploma thesis is about late and current methods used in Engineering surveys. The theoretical part is focused on description of individual testing methods and their evaluation based on relevant standarts. Detailed description of diagnostic methods is dependent on methods used in a practical part. The practical part is focused on defining of material characteristics of used materials and way of reinforcing of reinforced concrete elements. Based on those defined pieces of information the static recalculation of girder and pile was made.
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Dynamic Tensile Test – Material Parameters Determination
Sismilich, Vladimír ; Hadraba, Hynek (referee) ; Severa, Martin (advisor)
The purpose of the work is to summarise todays existing methods of testing materials at high strain rates and techniques of evaluation acquired experimental data. There are shown the most important dynamic materials characteristics, by which is able to describe material behaviour at high strain rates. Dynamic tensile test on Eurofer’97 steel at loading rate 1m/s was conducted experimental data were analysed and evaluated. In the evaluation The most important strain and stress properties of this steel were determined.
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The Tensile Test of Tubes
Janda, Luděk ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
The present thesis deals with the tensile test of tube samples and verifies the possibilities of obtaining the corresponding material characteristics. In this work, a total of 3 types of tube samples made according to ČSN EN 10002-1were investigated. For the experiments, longitudinally welded tubes made of 17 240 steel were selected. The used tube was marked as a thin-walled one. Tensile tests were performed on 22 the samples, namely 8 samples on samples having a form of a cut-off of a full cross section tube, 10 samples a strip of segment cross section and a 4 samples transverse cut-out of tube. The goal of thesis was to validate options of acquiring material characteristics, value of deformation hardening exponent ,,n,, and material characteristic ,,C,, of tube samples. Further examination was aimed at designating which shape of sample tubes used for tension test is most suitable. And behaviour of individual samples was examined with tensile load applied. Tension tests were conducted on hydraulic test machine ZD40.
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Preparation and Realization of Technical Survey of the Building
Richterová, Dominika ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
This bachelor's thesis in its first part focuses mainly on the theoretical description of the methods applicable in the diagnosis of building constructions; and not only the current methods, but also those previously used. In addition to descriptions and introduction of these methods, the descriptions of ways of implementation and evaluation possibilities according to the given standards are included, which is the specific content of the second part of the thesis. The last part is practical which is mainly approached by determining of characteristics of materials used in the construction or the reinforcement of the construction.
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Analysis of material properties of composite boards based on cement and organic fibers in relation to its use in the design of interior staircases
Nespěšný, Ondřej ; Schmid, Pavel (referee) ; Pěnčík, Jan (advisor)
Cement-based composite boards reinforced by organic fiber, commonly known as cement fiber boards are universal and environmental material. Nowadays they are commonly used in construction industry in the form of facade facing for ventilated facades, interior and exterior ceilings or as a lost formwork for the bridge constructions. In these ways of using the cement fiber boards are strained mainly perpendicularly to their median plane. Material characteristics for this kind of strain are declared by the manufacturers. This diploma thesis is focused on ways of using the cement fiber boards reinforced by organic fiber as prefabricated, constructional material for interior staircases. In this case, every segment is strained even in its median plane. This way of strain is atypical and is not declared by the manufacturers in the manufacturer's technical sheets. The main goal of the diploma thesis was to experimentally determine the material characteristics in relation to the possibility of using the cement fiber boards reinforced by organic fiber for the construction of interior stairways. Material characteristics were determined by using Czech technical standards and information from professional literature. Testing tools made by 3D printing were used in the measurements. The possibilities of connecting cement fiber boards by mechanical and glued joint were checked out. The trial “stand” from CLT boards was designed for the real testing of single-arm and double-arm staircases. The outcomes of the experimental measurements confirmed the possibility to use the cement fiber boards for interior stairways. It is necessary to support the design of the staircase by static calculations and to respect the design of the dimensions of the individual segments in the implementation.
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Preparation and Realization of Technical Survey of the Building
Richterová, Dominika ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
This bachelor's thesis in its first part focuses mainly on the theoretical description of the methods applicable in the diagnosis of building constructions; and not only the current methods, but also those previously used. In addition to descriptions and introduction of these methods, the descriptions of ways of implementation and evaluation possibilities according to the given standards are included, which is the specific content of the second part of the thesis. The last part is practical which is mainly approached by determining of characteristics of materials used in the construction or the reinforcement of the construction.
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Analysis of material properties of composite boards based on cement and organic fibers in relation to its use in the design of interior staircases
Nespěšný, Ondřej ; Schmid, Pavel (referee) ; Pěnčík, Jan (advisor)
Cement-based composite boards reinforced by organic fiber, commonly known as cement fiber boards are universal and environmental material. Nowadays they are commonly used in construction industry in the form of facade facing for ventilated facades, interior and exterior ceilings or as a lost formwork for the bridge constructions. In these ways of using the cement fiber boards are strained mainly perpendicularly to their median plane. Material characteristics for this kind of strain are declared by the manufacturers. This diploma thesis is focused on ways of using the cement fiber boards reinforced by organic fiber as prefabricated, constructional material for interior staircases. In this case, every segment is strained even in its median plane. This way of strain is atypical and is not declared by the manufacturers in the manufacturer's technical sheets. The main goal of the diploma thesis was to experimentally determine the material characteristics in relation to the possibility of using the cement fiber boards reinforced by organic fiber for the construction of interior stairways. Material characteristics were determined by using Czech technical standards and information from professional literature. Testing tools made by 3D printing were used in the measurements. The possibilities of connecting cement fiber boards by mechanical and glued joint were checked out. The trial “stand” from CLT boards was designed for the real testing of single-arm and double-arm staircases. The outcomes of the experimental measurements confirmed the possibility to use the cement fiber boards for interior stairways. It is necessary to support the design of the staircase by static calculations and to respect the design of the dimensions of the individual segments in the implementation.
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Survey and Diagnostics of Reinforced Concrete Structure
Haloun, Jan ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The first part of this diploma thesis is about late and current methods used in Engineering surveys. The theoretical part is focused on description of individual testing methods and their evaluation based on relevant standarts. Detailed description of diagnostic methods is dependent on methods used in a practical part. The practical part is focused on defining of material characteristics of used materials and way of reinforcing of reinforced concrete elements. Based on those defined pieces of information the static recalculation of girder and pile was made.
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|
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The Tool for a Radial Expanding of Tubes by Liquid
Horák, Michal ; Lidmila, Zdeněk (referee) ; Peterková, Eva (advisor)
The submitted diploma thesis is focused on problematic of a radial expanding of tubes. In the first part of thesis, there is a summary of possible theoretical formulas for determining the stress-strain material parameters for biaxial bulging test of tube by liquid. Also there are showed several options for testing tools used in research abroad. The work also contains technological and control calculations for the selected test sample from the tube of steel 17 240 (1.4301). At the end of thesis, there are key points for tool design and there is also presented the proposed the test tool for a radial expanding of test sample of tube to the free space and with firmly fixed the ends of tube in the tool.
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