Mehanske lastnosti 3D natisnjenih elementov : diplomska naloga št.: 434/B-GR

Gerič Škopac, Katarina (author), Može, Primož (mentor), Piculin, Sara (co-mentor)

V diplomski nalogi sem raziskovala kako različni parametri pri 3D tisku vplivajo na končne mehanske lastnosti izmerjene v standardnem nateznem testu. Zanimalo me je, kako stopnja prekrivanja notranjih slojev vpliva na končne mehanske lastnosti, pri tem sem upoštevala 30 % in 70 % stopnjo prekrivanja. Primerjala sem pet različnih smeri tiska in temperature tiskanja 210, 230 in 250 °C. Raziskovala sem tudi razlike med materialoma PETG in PLA-CF. Za vsak parameter, ki me je zanimal, sem natisnila serijo z dvema vzorcema. Vsaka serija je bila izvedena v A in B verziji, kjer je A imela 30 % prekrivanje notranjih slojev in B 70 % prekrivanje. Material PLA-CF ima višji modul elastičnosti kot PETG, vendar ima PLA-CF nižjo nosilnost kot PETG. Rezultati so pokazali, da je vpliv nekaterih parametrov na nosilnost jasen, pri nekateri parametrih pa bi bilo potrebno izvesti več preiskav.

• Language: Slovenian
• Keywords: gradbeništvo, diplomske naloge, UNI, GR, B-GR, 3D tisk, preizkušanje 3D natisnjenih vzorcev, natezni preizkus, mehanske lastnosti
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [K. Gerič Škopac]
• Year: 2022
• Number of pages: X, 39 str.
• PID: 20.500.12556/RUL-141208-12a958fd-48f0-791f-4fd6-eaa3c90932ca
• UDC: 624.046.2:004.356.2-023.5(043.2)
• COBISS.SI-ID: 125790723
• Publication date in RUL: 25.09.2022

Secondary language

• Language: English
• Title: Mechanical properties of 3D printed elements : graduation thesis no.: 434/B-GR

Abstract

The goal of the thesis was to compare how different settings in 3D printing influence the mechanical properties obtained from a standard tensile test. The goal was to find out how the overlap of the inner layer affects the end result, whether a higher overlap results in better mechanical properties or not. Different directions of printing the inner layers and different printing temperatures were researched. Two materials, namely PETG and PLA-CF were considered. A series with two samples was printed for every parameter under consideration. Each series had two versions, where version A had a 30 % overlap of the inner layers and version B had a 70% overlap. The results show that the effect of some parameters on the ultimate strength is clear, while some of the parameters require further testing.

• Keywords: graduation thesis, civil engineering, 3D printing, testing of 3D printed elements, tensile testing, mechanical properties