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The verification of durability of surface layer by pull-off testing
Fujačková, Hedvika ; Komárková, Tereza (referee) ; Kocáb, Dalibor (advisor)
The theoretical part of this bachelor's thesis defines the basic properties, categorization, and use of the individual components of concrete and presents the properties of fresh and hardened concrete, especially the tensile strength. Furthermore, the thesis addresses the problem of durability assessment of concrete, which depends directly on the quality of the surface layer. The experimental part of the thesis focuses on executing of a pull-off test and examines the surface layer tensile strengths of various concrete mix designs. The thesis examines how the results of the measurements correspond with other published results.
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Design of paint systems in coachwork parts of easel issues
Fajfr, Jan ; Žák, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
This bachelor thesis deals with proposal for a new type of painting. There is a solution of proper pretreatment for undercoat. Teoretical part includes analysis of these pretreatments, types of powder coatings, options how to apply these coatings including curing. There have been made samples for the purpose of this work and the samples were tested for resistance. Conslusion of this work contains results of the experiment and the choice of the best type of painting with regards of economy.
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ADHESION OF BIOCOMPATIBLE TiNb COATING
Kolegar, T. ; Matoušek, M. ; Vilémová, Monika ; Starý, V.
Preparation of a coating with a high quality requires good adhesion of the film to the substrate. The paper deals with the adhesion of biocompatible TiNb coating with different base materials. Several materials such as titanium CP grade 2, titanium alloys Ti6Al4V and stainless steel AISI 316L were measured. Testing samples were made in the shape of small discs. Those samples were coated with a TiNb layer by using the PVD method (magnetron sputtering). Onto the measured layer of TiNb an assistant cylinder was stuck using a high strength epoxy adhesive E1100S. The sample with the assistant cylinder was fixed into a special fixture and the whole assembly underwent pull-off testing for adhesion. The main result of this experiment was determining the strength needed to peel the layer and morphology and size of the breakaway. As a result, we will be able to determine the best base material and conditions where the coating will be remain intact with the base material.
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Design of paint systems in coachwork parts of easel issues
Fajfr, Jan ; Žák, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
This bachelor thesis deals with proposal for a new type of painting. There is a solution of proper pretreatment for undercoat. Teoretical part includes analysis of these pretreatments, types of powder coatings, options how to apply these coatings including curing. There have been made samples for the purpose of this work and the samples were tested for resistance. Conslusion of this work contains results of the experiment and the choice of the best type of painting with regards of economy.
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The verification of durability of surface layer by pull-off testing
Fujačková, Hedvika ; Komárková, Tereza (referee) ; Kocáb, Dalibor (advisor)
The theoretical part of this bachelor's thesis defines the basic properties, categorization, and use of the individual components of concrete and presents the properties of fresh and hardened concrete, especially the tensile strength. Furthermore, the thesis addresses the problem of durability assessment of concrete, which depends directly on the quality of the surface layer. The experimental part of the thesis focuses on executing of a pull-off test and examines the surface layer tensile strengths of various concrete mix designs. The thesis examines how the results of the measurements correspond with other published results.
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