Effects of the face/core layer ratio on the mechanical properties of 3D printed wood/polylactic acid (PLA) green biocomposite panels with a gyroid core

Ayrilmis, Nadir (avtor), Nagarajan, Rajini (avtor), Kitek Kuzman, Manja (avtor)

Gyroid structured green biocomposites with different thickness face layers (0.5, 1, 2 and 2.5 mm) were additively manufactured from wood/polylactic acid (PLA) filaments using a 3D printer. The mechanical properties of the composite panels, bending properties, compressive strength (parallel to the surface), Brinell hardness, and face screw withdrawal resistance, were determined. The surface layer thickness significantly affects the mechanical properties of the composite materials. As the surface layer thickness was increased from 0.5 to 2.5 mm, all the mechanical properties significantly improved. In particular, the Brinell hardness and face screw withdrawal resistance of the specimens improved sharply when the skin thickness was higher than 2 mm. The bending strength, bending modulus, compressive strength (parallel to the surface), Brinell hardness, and face screw withdrawal resistance of the specimens with a skin of 0.5 mm were found to be 8.10, 847.5, 3.52, 2.12 and 445 N, respectively, while they were found to be 65.8, 11.82, 2492.2, 14.62, 26 and 1475 N for the specimens with a 2.5 mm skin. Based on the findings from the present study, gyroid structured composites with a thickness of 2 mm or higher are recommended due to their better mechanical properties as compared to the composites with skins that are thinner.

• Jezik: Angleški jezik
• Ključne besede: 3D printing, design, wood, lightweight, mechanical properties, gyroid core, polylactic acid, shell ratio
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 8 str.
• Številčenje: Vol. 12, iss. 12, art. 2929
• PID: 20.500.12556/RUL-134707
• UDK: 630*8
• ISSN pri članku: 2073-4360
• DOI: 10.3390/polym12122929
• COBISS.SI-ID: 41466371
• Datum objave v RUL: 27.01.2022

Gradivo je del revije

• Naslov: Polymers
• Skrajšan naslov: Polymers
• Založnik: MDPI
• ISSN: 2073-4360
• COBISS.SI-ID: 517951257

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 07.12.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: 3D tiskanje, oblikovanje, les, lahka plošča, mehanske lastnosti, giroidna struktura

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P4-0015
• Naslov: Les in lignocelulozni kompoziti