Karakterizacija in analiza nateznih parametrov 3D natisnjenih polimernih in kompozitnih materialov

magistrsko delo

Marko Čistar (Author), Elvis Hozdić (Mentor)

Abstract

Magistrsko delo preučuje vpliv gostote izpolnilne strukture in časovne izpostavljenosti hladilno-mazalnemu sredstvu na mehanske lastnosti 3D natisnjenih polimernih in kompozitnih materialov. S tehnologijo nalaganja staljenega materiala (FDM) so bili natisnjeni preizkušanci iz PLA, PLA+CF in PA+CF z različnimi gostotami izpolnilne strukture (40 %, 60 %, 80 % in 100 %) ter izpostavljeni hladilno-mazalnemu sredstvu za 7 in 30 dni. Natezni preizkusi so bili izvedeni skladno s standardom ISO 527-2. Rezultati kažejo, da večja gostota izpolnilne strukture povečuje natezno trdnost, vendar daljša izpostavljenost hladilno-mazalnemu sredstvu povzroča njen upad, najbolj izrazito pri 100 % gostoti izpolnilne strukture, kjer se je po 30 dneh zmanjšala za več kot 14 %. Pri Youngovem modulu je opaziti različne trende: pri 40 % in 80 % gostoti se je povečal, medtem ko se je pri 60 % in 100 % zmanjšal. To potrjuje kompleksen vpliv mazalnega sredstva na strukturo materialov. Ugotovitve prispevajo k boljšemu razumevanju vpliva strukturnih parametrov in okoljskih dejavnikov na mehanske lastnosti 3D natisnjenih delov ter omogočajo optimizacijo njihove uporabe v industriji.

Keywords

FDM tehnologija;3D natisnjeni materiali;izpolnilne strukture;oblika izpolnilnih struktur;natezne lastnosti;hladilno-mazalna sredstva;Izpostavljenost hladilno-mazalnih sredstvom;primerjalna analiza;magistrska dela;

Data

Language:	Slovenian
Year of publishing:	2025
Typology:	2.09 - Master's Thesis
Organization:	VITES - School of technologies and systems
Publisher:	[M. Čistar]
UDC:	621.892:539.412+678.7:004.925.8(043.2)
COBISS:	234346243
Views:	149
Downloads:	4
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	CHARACTERIZATION AND ANALYSIS OF TENSILE PARAMETERS OF 3D-PRINTED POLYMER AND COMPOSITE MATERIALS
Secondary abstract:	This master's thesis investigates the influence of infill density and prolonged exposure to a cooling lubricant on the mechanical properties of 3D-printed polymeric and composite materials. Using Fused Deposition Modeling (FDM), test specimens were fabricated from PLA, PLA+CF, and PA+CF, each featuring varying infill densities (40%, 60%, 80%, and 100%). These specimens were subjected to cooling lubricant exposure for 7 and 30 days, followed by tensile testing in accordance with the ISO 527-2 standard. The results demonstrate that increasing infill density enhances tensile strength; however, prolonged exposure to the cooling lubricant leads to a decline, most significantly at 100% infill density, where tensile strength decreased by more than 14% after 30 days. Young’s modulus exhibited varying trends: it increased at 40% and 80% infill densities, while it decreased at 60% and 100%. This indicates a complex interaction between the cooling lubricant and the structural properties of the materials. These findings contribute to a deeper understanding of the effects of structural parameters and environmental factors on the mechanical performance of 3D-printed components, facilitating the optimization of their application in industrial settings.
Secondary keywords:	Aditivna proizvodnja;Kompoziti;Polimeri;Univerzitetna in visokošolska dela;
Type (COBISS):	Master's thesis
Study programme:	0000842
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Novem mestu, Fak. za strojništvo, št. mag. dela M029
Pages:	[109] f. loč. pag.
ID:	26275478