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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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Analysis of Thermoplastic Welded Joints
Procházka, Martin ; Kytýr, Jiří (referee) ; Gratza, Roman (advisor)
This thesis deals with analyses of thermoplastic welded joints. Experiments were performed, in which the not-welded specimens and specimens with cruciform welded joints were tested by tensile and three-point bending test. For these measurements, polypropylene and polyethylene specimens were used. Afterwards, the analyses of specimen models were made in the ANSYS programme. The results of the analyses were compared with figures of the analytic calculations and measurements.
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Bonding of 3D FDM printed parts from ABS
Halabrín, Marek ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The thesis focuses on comparisons of usability of distinct types of glues to attach specimens. The specimens were glued using 4 types of glue: BISON Power Adhesive, BISON Epoxy Universal, PATTEX Repair Epoxy 5 min and a mixture of acetone with diluted ABS plastic as the last. The specimens underwent tensile and impact tests. For the tensile test, the specimens were made in 3 variants: blunt frontal joint, bevelled joint and gradually folded joint. For the impact test, the specimens were made in the form of a rod with a V-shaped notch. All variants of the joints consisted of 5 specimens with 3 unglued specimens for reference. The testing was conducted on the ZD 10/90 tensile strength machine and a Charpy impact test machine from the WPM company. The thesis contains technical-economic evaluation of the results of the tests with comparisons of the individual glues and forms.
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Mechanical properties of materials for 3D printing
Janiš, Adam ; Maxa, Jiří (referee) ; Vyroubal, Petr (advisor)
This thesis focuses on the description of 3D printing technologies using the FDM method, which uses deposition of molten thermoplastics and their subsequent cooling and solidification layer by layer. This unique structure then shows a strong anisotropy of mechanical properties and, as a result, their testing and print settings are very important. Tensile testing of plastic materials, including indicators of mechanical properties, are described in this thesis according to ČSN EN ISO standard. The practical part presents the concept of a device capable of performing these tests. The block diagram indicates the functional elements and the connections among them. Tensile strength test is described together with results processing. Necessary product documentation is also included.
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Destruktivní metody testování materiálu
Veverka, Vilém
The submitted bachelor's thesis deals with destructive methods of material testing with a focus on tensile testing and material fatigue. The aim of the bachelor's thesis was to prepare an overview of individual destructive methods of material testing and comparison of tensile diagrams of samples. In the bachelor's thesis, 3 types of samples were investigated, which were printed on a Prusa i3 MK3s 3D printer from ABS, PLA and PETG materials. Test specimens were modeled in Fusion 360 according to ASTM D638. The tensile test was performed on a ZDM 5/51 universal tensile machine according to the ASTM D638 standard. The results show that the sample made of PLA material has the highest tensile strength of 41,23 MPa.
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Mechanical properties of materials for 3D printing
MIKUDA, Martin
This bachelor's thesis deals with the comparison of the mechanical properties of PLA 3D printing materials produced in the Czech Republic. Materials from the manufacturers Prusa, Filament PM and Aurapol were selected for comparison. Materials were compared using ovality measurements and standardized mechanical tests. During the measurement, it was found that the most accurate filament is supplied by the Prusa manufacturer. For this manufacturer, the ovality was 0.21 +- 0.02%. From the results of the tensile test, the material with the highest tensile strength values was determined. It is a Filament PM material that reached values of 48.6 +- 0.8 MPa for printing using perimeters and 33 +- 2 MPa for printing using two perimeters and 100% filling. In the impact resistance test, it was found that depending on the orientation of the printing layer, we can achieve double the impact resistance. From the results of the tests, it was determined that for printing where mechanical resistance is required for the product, it is most appropriate to choose the material from the manufacturer of Filament PM. For other prints, it is possible to choose the cheapest material from Aurapol. The difference in mechanical properties is not significant for the most expensive Prusa material and the cheapest material Aurapol. For some properties, Aurapol material achieved better results than Prusa.
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Vytvoření počítačového modelu simulujícího namáhání materiálu tahem
KORTAN, Miloš
The bachelor thesis deals with the creation of a computer model simulating the ten-sile stress of the material. In the introductory part of this thesis it is explained in detail what are tech-nical materials, what are their physical, mechanical and techno-logical properties. In the next part, the tests of materials are described and what they are, how they are performed and what they are used for. The penultimate part of the thesis focuses on the Solidworks program. It explains step by step the creati-on of the test bodies, and the subsequent simulation of the tensile stress of the ma-terial. The last part of this thesis describes the experimental verification of the ten-sion test. All data, graphs and their evaluation are presented.
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Bonding of 3D FDM printed parts from ABS
Halabrín, Marek ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The thesis focuses on comparisons of usability of distinct types of glues to attach specimens. The specimens were glued using 4 types of glue: BISON Power Adhesive, BISON Epoxy Universal, PATTEX Repair Epoxy 5 min and a mixture of acetone with diluted ABS plastic as the last. The specimens underwent tensile and impact tests. For the tensile test, the specimens were made in 3 variants: blunt frontal joint, bevelled joint and gradually folded joint. For the impact test, the specimens were made in the form of a rod with a V-shaped notch. All variants of the joints consisted of 5 specimens with 3 unglued specimens for reference. The testing was conducted on the ZD 10/90 tensile strength machine and a Charpy impact test machine from the WPM company. The thesis contains technical-economic evaluation of the results of the tests with comparisons of the individual glues and forms.
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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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Mechanical properties of materials for 3D printing
Janiš, Adam ; Maxa, Jiří (referee) ; Vyroubal, Petr (advisor)
This thesis focuses on the description of 3D printing technologies using the FDM method, which uses deposition of molten thermoplastics and their subsequent cooling and solidification layer by layer. This unique structure then shows a strong anisotropy of mechanical properties and, as a result, their testing and print settings are very important. Tensile testing of plastic materials, including indicators of mechanical properties, are described in this thesis according to ČSN EN ISO standard. The practical part presents the concept of a device capable of performing these tests. The block diagram indicates the functional elements and the connections among them. Tensile strength test is described together with results processing. Necessary product documentation is also included.
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