Mehanske lastnosti 3D-tiskanega izdelka iz najlona

Markovič, Martin (author), Valentinčič, Joško (mentor), Lebar, Andrej (comentor)

Pri 3D-tiskanju poznamo več različnih postopkov. V našem primeru smo pri preizkusih uporabili tehnologijo FDM ali metodo ciljnega nalaganja. Zanimalo nas je, kako obdelovalna parametra, kot sta stopnja notranje zapolnitve in kot zapolnitve, vplivata na udarno žilavost in udarno delo izdelkov in katere parametre izbrati v primeru, če želimo obdržati dobro udarno odpornost in uporabiti najmanjšo količino materiala. Pri Charpyjevemu preizkusu smo na 3D-tiskanih preizkušancih izvedli udarni preizkus ter odčitali udarno delo in nato izračunali udarno žilavost. Ugotovili smo, da imajo izdelki s kotom notranje strukture 90° in 50 % notranjo zapolnjenostjo najvišjo vrednost udarnega dela. Izdelki s stopnjo zapolnjenosti 0 % imajo najvišje vrednosti udarne žilavosti, zaradi česar jih lahko upravičeno obravnavamo kot izdelke s parametri, ki imajo najboljšo udarno odpornost glede na količino uporabljenega materiala.

• Language: Slovenian
• Keywords: 3D-tiskanje, udarno delo, udarna žilavost, Charpyjev udarni preizkus, poliamid-najlon, stopnja zapolnitve, kot zapolnitve
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-94935
• Publication date in RUL: 11.09.2017

Secondary language

• Language: English
• Title: Mechanical properties of 3D-printed product made from nylon

Abstract

There are several different technologies of 3D printing. In our experiment, we studied FDM method of 3D-printing and the differences in impact work and impact toughness that appear in changing the fill density and angle of inner filling. We also studied which of the named parameters are the best for minimum consumption of material and for the best impact properties. Mechanical properties were tested with the Charpy impact test. Based on the Charpy test, we scanned impact work and calculated impact toughness. Findings suggested that specimens with an inner filling of a 90° angle and 50% fill density use the highest amount of impact work. Specimens with 0% fill density have the highest impact toughness and can be interpreted as specimens with best impact properties for minimum consumption of material.

• Keywords: 3D-printing, impact work, impact toughness, Charpy impact test, polyamide-nylon, fill density, angle of inner filling