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Surface pre-treatment of structural aluminum alloys for bonded joints
Pikner, Jan ; Doskočil, Leoš (referee) ; Wasserbauer, Jaromír (advisor)
This thesis deals with pre-treatment of surface of aluminium alloys. The theoretical part focuses on the properties of aluminium and its alloys, on methods of surface treatment and the possibilities of quality assessment of pre-treated surface. The experimental part deals with finding of a proper method of pre-treatment. The quality of surface pre-treatment is assessed by observation by SEM with EDS and by single lap shear tests of adhesive joints. According to evaluated results, the optimalised methods are qualitatively and financially compared with the commercial method.
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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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Interaction of adhesive tapes with surfaces of structural aeronautical alloys
Matlák, Jiří ; Tulka,, Jaromír (referee) ; Molliková, Eva (advisor)
This work deals with the selection of the most appropriate adhesive tape, which one perfectly adheres to the surface of sheet, which is made of dural coated with aluminum in 99,5 % purity, and to the dural angle without surface treatment. The tape is expected to be de-cohesion and disruption resistant during the application of complex coating system to protect the materials in air traffic against corrosion, and smoothly removal of the treated material without affecting the surface. Twelve types of commercially available adhesive tape were tested, and the most appropriate one was chosen after extensive experiment and photographic documentation.
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Stress analysis and modelling of adhesive bonded joints with the use of Finite Element Method
Trubíniová, Karolína ; Horák, Marek (referee) ; Katrňák, Tomáš (advisor)
This bachelor’s thesis deals with the analysis of adhesive joints used in the aerospace industry by numerical solution using finite element method. The research section is focused on introduction to the topic of adhesive joints, the advantages and disadvantages they bring and their use in aerospace industry. The shear strength test using analytical approach is also part of this work. The practical part is focused on creation of 2D and 3D models of single lap joint test specimen and the subsequent strength analysis in MSC.Patran and MSC.Nastran. The output of this work consists of linear analysis of 2D and 3D problems, a non-linear analysis of 3D problem and comparison of results obtained by these methods.
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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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Surface pre-treatment of structural aluminum alloys for bonded joints
Pikner, Jan ; Doskočil, Leoš (referee) ; Wasserbauer, Jaromír (advisor)
This thesis deals with pre-treatment of surface of aluminium alloys. The theoretical part focuses on the properties of aluminium and its alloys, on methods of surface treatment and the possibilities of quality assessment of pre-treated surface. The experimental part deals with finding of a proper method of pre-treatment. The quality of surface pre-treatment is assessed by observation by SEM with EDS and by single lap shear tests of adhesive joints. According to evaluated results, the optimalised methods are qualitatively and financially compared with the commercial method.
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Interaction of adhesive tapes with surfaces of structural aeronautical alloys
Matlák, Jiří ; Tulka,, Jaromír (referee) ; Molliková, Eva (advisor)
This work deals with the selection of the most appropriate adhesive tape, which one perfectly adheres to the surface of sheet, which is made of dural coated with aluminum in 99,5 % purity, and to the dural angle without surface treatment. The tape is expected to be de-cohesion and disruption resistant during the application of complex coating system to protect the materials in air traffic against corrosion, and smoothly removal of the treated material without affecting the surface. Twelve types of commercially available adhesive tape were tested, and the most appropriate one was chosen after extensive experiment and photographic documentation.
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