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All Journal Jurnal Rekayasa Mesin Otopro Jurnal Teknik Mesin Sinergi Majalah Teknik Industri Jurnal Polimesin
Roberth Marshall Ratlalan
Akademi Komunitas Industri Manufaktur Bantaeng
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Jurnal Polimesin

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Effect of internal geometry on the tensile strength of SLA-printed resin using a formlabs 3D printer Roberth Marshall Ratlalan; Muh Farid Hidayat
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6605

Abstract

Stereolithography (SLA) is developing rapidly as a 3D printing technology in manufacturing high precision resin-based parts.  This research investigates the influence of internal geometry on the tensile strength of samples printed with a Formlabs SLA printer using dental resin. Three types of internal geometries of solid control, triangular lattice, and honeycomb lattice were compared and evaluated. Samples were designed using Autodesk Inventor according to ASTM D638 standards and printed with symmetry axis dimensions of 5 mm and 10 mm and a consistent thickness of 5 mm. Tensile testing was conducted to analyze the influence of resin material type, internal geometry design, and dimensional parameters on their mechanical properties. The results showed that the solid internal geometry achieved the highest average tensile stress of 33.33 MPa meanwhile the triangular geometry with 5 mm configuration exhibited superior tensile performance compared to the honeycomb design.
Co-Authors Muh Farid Hidayat Nurisma Maharani