Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Türkiye
Tezin Onay Tarihi: 2024
Tezin Dili: Türkçe
Öğrenci: ILKIN SHAHBAZOV
Danışman: Abdulmecit Güldaş
Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
Özet:
The two most important characteristics of parts used in engineering are durability and light weight. These two criteria vary with material selection and geometric structure. The optimum value of the strength and weight of plastic materials can be found by producing them in various geometric shapes. The production of these geometric shapes is challenging with plastic injection molding and machining methods and can only be done with 3D printing methods. A literature survey was conducted on existing studies. In this thesis, the effects of both the ideal geometric printing shape and the internal filling ratio on structural strength were investigated, and the results of the selection of light and durable plastic filament were determined. The designed test piece was printed using the 3D FDM method and PLA+ material with grid, octagonal, full honeycomb, fast honeycomb, sinusoid, cubic, linear, triangular and gyroscopic internal filling geometries, three of each geometry, with an internal filling ratio of 25%, a nozzle tip diameter of 1 mm and a temperature of 210 degrees Celsius. These print samples were broken by torsion test with the help of the device specially designed within the scope of the thesis, and the best filling geometry was determined as the triangular pattern. With the triangular geometry, three pieces of the same design were produced from PLA+ material with 45%, 65% and 85% internal filling ratios and the torsion test was repeated. The best internal filling ratio was determined as 85%. With a triangular internal filling geometry and 85% internal filling ratio, two pieces of each of PLA+, ABS, PETG and ASA materials were designed in accordance with ISO 527-2 Plastic Tensile Test and ISO 604-1973 Plastic Compression Test, and the relevant tests were carried out. As a result of the tests, the best result among the materials tested was achieved with PLA+ material.