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Accelerate handling strength in 2K PUR adhesives
Slatinská, Jana ; Žák, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
This paper is devoted to accelerating the time to obtain the handling strength of two-component polyurethane adhesive, which was newly purchased by the company Magna Exterios (Bohemia) and had to be tested. In order to speed up the analysis of the problem, methods of IR emitters and temperature chambers were selected to be compared with curing using only the ambient atmosphere. In the second part of this paper, the maximum strength of the bond which withstand the test without damage was measured. The results show that the method of accelerating curing process using an IR emitter is the fastest, but the economic side of things must be taken into account, because it is also the most expensive option of acceleration. The temperature chamber is almost twice as slower, but cheaper. At the end of the thesis, the economic efficiency of the new adhesive line solution is evaluated and how much money can be ideally saved.
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The use superglue
Nádvorník, Jiří ; Slováček, Marek (referee) ; Kubíček, Jaroslav (advisor)
The thesis aims to asses use of superglue on plastic materials. Glueing, or bonding, is a process occurring more and more in all parts of industry. With implementation of non metal materials, there is larger demand for studying properties of adhesives and glued joints. At first, technology of glueing and preparation of joints will be discussed. Further research of superglue and plastics will be done. In preparation for practical test, right kind of plastic and superglue will be chosen. Tests themselves will consist of making samples and destructive testing. The goal is to observe the influence of viscosity of glue and temperature during curing on strenght ot the joint.
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Virtual launch of the robotic welding and gluing line using Tecnomatix - Process Simulate
Tomeček, Radim ; Juříček, Martin (referee) ; Simeonov, Simeon (advisor)
This thesis deals with the design and creation of a virtual twin of a robotic cell intended to simulate and create a virtual launch of this cell. The goal was to design the layout of the robotic cell and subsequently create a full virtual run of an automated robotic workstation designed for spot welding, MIG welding and bonding processes. The initial research section deals with the individual technologies to be simulated. Subsequently, three designs for the layout of the robotic workstation are developed in this thesis. After evaluating and selecting the design, a virtual twin of the robotic cell is created using Process Simulate and then all the processes are simulated resulting in the virtual launch of the cell.
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Precise bonding of composite materials
Tellinger, Adam ; Gregor, Lukáš (referee) ; Kupčák, Radim (advisor)
This bachelor's thesis deals with the issue of bonding composite materials. The first part of the bachelor's thesis is focused on research into the production of composite materials and gluing technologies. The content of the practical part is the design of test specimens and a preparation for their bonding with subsequent production. Furthermore, verification of compliance with the required accuracy of bonded joints when using different adhesives using 3D measurements.
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The options of the joining of tube components
Holusek, Maxmilián ; Štroner, Marek (referee) ; Peterková, Eva (advisor)
The bachelor thesis deals with tube components joining methods. In the thesis, the preparation of the tube components is mentioned, as well as its tools and machines for cutting and adjusting the components. Furthermore, the work introduces several joining methods such as soldering and brazing, welding, pressing technology, adhesive bonding and threaded connection. The basic principle is described for each method, as well as using tools and machines plus advantages and disadvantages. In the end, the use of tube components is presented.
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Gluing of FDM 3d printed parts from PLA
Šlimar, Filip ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The thesis deals with the theory of 3D printing, materials for printing and bonding. It focuses on FDM printing and PLA material. It also compares gluing with other methods and deals with the distribution of adhesives, the gluing procedure and tests of glued joints. The work, based on literature studies, proposes an experiment to evaluate selected adhesives. The practical part contains a description, results and evaluation of the experiment. The evaluation of adhesives is based on tensile and shear strength.
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On the effect of lacquer-setting technology on the quality of a joint
Smékal, Jan ; Petrenec, Martin (referee) ; Píška, Miroslav (advisor)
The thesis is divided into two parts. At first it deals with the process of powder coating technology, gluing technology and rubber. Then the thesis continues with the experimental part, which includes process of making glued joints and evaluation of tensile test of those glued joints. The effect of lacquer-setting technology on quality of a joint cannot be reliably evaluated based on results achieved from tensile test. Analysis of results was made as well as suggestion for improvements of experiment for future thesis.
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Modifikace barvy dubových dýh a její vliv na kvalitu lepení
Rozboril, Tadeáš
This master thesis based on experimental evaluation is focused on colour modification of oak wood veneers and its impact on bonding quality. Experiments were conducted on nanoiron treated oak wood as well as on untreated oak wood. By the experimental means was evaluated influence of treatment on wetting angle, bonding of surface layer and possibilty of impregnation of selected wood veneers in whole volume. Chosen modification didn´t effect selected assembly by loss of bonding quality.
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Posouzení kvality lepení u kombinovaných kompozitních materiálů na bázi dřeva
Krejčí, Filip
The aim of the bachelor thesis is to evaluate the bonding quality of wood-based composite materials. Chipboard panels from various manufacturers with representation in the Czech Republic will be selected. In the theoretical part will be briefly described the important parts of the production process and the factors influencing the properties of chipboard. In the practical part will be determined the methodology of the experiment and the subsequent testing to determine the physical and mechanical properties of the selected material. The bachelor's thesis will show tables and charts, which will be evaluated and commented in the end for practical use.
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Vizualizace normálového a tečného napětí u lepených spojů
Havránek, Tomáš
This master thesis deal with the glued joint. Teoretical part is focused on basic facts and an advanteges or disadvanteges of this technique. A large part is devoted to theory of gluid process, adhesion, cohesion wettability of glued surfaces. Last part of the theoretical part is searches in the field of tension glued joints and methods to quality assessment of made joint. Experimental testing glued surfaces was made as bend test. During testing was monitored the acoustic emissions. The emissions characterize violation of glued joints. Results of this experiment are evaluated in the end of this thesis.
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