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Title:KARAKTERIZACIJA IN ANALIZA TLAČNIH PARAMETROV PLA IN PLA+CF MATERIALOV OBLIKOVANIH Z UPORABO FDM TEHNOLOGIJE ADITIVNE PROIZVODNJE
Authors:ID Selan, Rok (Author)
ID Hozdić, Elvis (Mentor) More about this mentor... New window
Files:.pdf MAG_Selan_Rok_2025.pdf (3,56 MB)
MD5: D693B3D8CC69270BACFB00E947283985
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:UNM FS - University of Novo mesto - Faculty of Mechanical engineering
Abstract:V magistrskem delu je preučen vpliv izpostavljenosti hladilno-mazalnemu sredstvu na tlačne mehanske lastnosti FDM 3D-tiskanih izdelkov iz polimlečne kisline (PLA) ter PLA, ojačanega s karbonskimi vlakni (PLA + CF). Preizkušanci so bili natisnjeni z različnimi gostotami izpolnila (20–100 %) in izpostavljeni sintetičnemu hladilno-mazalnemu sredstvu za obdobja 0, 7 in 30 dni. Tlačni preizkusi so bili izvedeni po standardu ASTM D695, pri čemer so bile analizirane maksimalna tlačna napetost, deformacija ob porušitvi in Youngov modul. Rezultati so pokazali, da se tlačna trdnost pri obeh materialih povečuje z večjo gostoto izpolnila, pri čemer je osnovni PLA v vseh primerih izkazal boljše lastnosti kot PLA + CF. Izpostavljenost mazivu je povzročila zmeren upad mehanskih lastnosti, zlasti v prvih sedmih dneh. Youngov modul je bil občutljivejši na kemični vpliv kot tlačna trdnost, zlasti pri višjih gostotah. Ugotovitve kažejo, da je PLA stabilnejša izbira za aplikacije, pri katerih prihaja do stika z industrijskimi mazivi. Gostota izpolnila izboljša trdnost, vendar ne vpliva bistveno na zmanjšanje degradacije. Rezultati prispevajo k boljši izbiri materialov in procesnih parametrov za FDM komponente v kemijsko zahtevnih okoljih.
Keywords:aditivna proizvodnja, degradacija materiala, hladilno-mazalno sredstvo, tlačne lastnosti, tehnologija z nanašanjem staljenega materiala
Year of publishing:2025
PID:20.500.12556/ReVIS-11722 New window
Publication date in ReVIS:31.05.2025
Views:155
Downloads:1
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Secondary language

Language:English
Title:CHARACTERIZATION AND ANALYSIS OF COMPRESSIVE PARAMETERS OF PLA AND PLA + CF MATERIALS FORMED USING FDM ADDITIVE MANUFACTURING TECHNOLOGY
Abstract:This master's thesis examines the effect of coolant-lubricant exposure on the compressive mechanical properties of FDM 3D-printed PLA and carbon fiber-reinforced PLA (PLA + CF). Specimens were printed at five infill densities (20–100%) and exposed to a synthetic coolant-lubricant for 0, 7, and 30 days. Compressive testing followed ASTM D695, assessing maximum stress, strain at failure, and Young's modulus. Results showed that compressive strength increased with infill density for both materials, with neat PLA consistently outperforming PLA + CF. Exposure to the lubricant led to moderate degradation of mechanical properties, particularly within the first seven days. The Young's modulus was more sensitive to chemical exposure than strength, especially at higher infill densities. The findings suggest that PLA is a more stable material for applications involving contact with industrial lubricants. Infill density enhances strength but does not significantly mitigate degradation effects. These insights support optimized material and process selection for FDM components used in chemically demanding environments.
Keywords:additive manufacturing, material degradation, coolant-lubricant, compression test, fused deposition modeling FDM


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