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All Journal Majalah Teknik Industri Jurnal Polimesin
Muh Farid Hidayat
Akademi Komunitas Industri Manufaktur Bantaeng
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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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.
Analisis Tegangan dan Temperature pada Pemotongan Ortogonal Terhadap Material AISI 4340 Menggunakan Metode Elemen Hingga Muh Farid Hidayat; Mahlina Ekawati
Majalah Teknik Industri Vol 31 No 1 (2023): Majalah Teknik Industri
Publisher : Unit Penelitian dan Pengabdian Masyarakat (UPPM) Politeknik ATI Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61844/majalahteknikindustri.v31i1.667

Abstract

Penelitian ini dilatar belakangi oleh perkembangan industri manufaktur dan dunia penelitian tentang permesinan. Selain itu, telah banyak yang melakukan studi tentang permesinan untuk mengetahui tegangan dan temperature secara eksperimen. Namun, masih sedikit yang membahas tentang analisis tegangan dan temperature menggunakan metode elemen hingga secara simulasi. Tujuan dari penelitian ini ialah Memodelkan dan menganalisis proses pemotongan orthogonal terhadap material AISI 4340 menggunakan pahat sisi pada perangkat lunak ABAQUS dimana output yang diketahui ialah nilai tegangan dan temperatur saat pemotongan. Adapun variabel permesinan dari penelitian ini ialah kedalaman pemakanan pada proses pemotongan (0.025 inch, 0.050 inch, 0.075 inch, dan 0.10 inch). Material sampel uji yang akan digunakan ialah AISI 4340 dan material pahat sisi yang digunakan ialah DNMG 120404 Carbide. Dari hasil analisis diperoleh nilai tegangan maksimum pada kedalaman pemotongan 0.10 inch sebesar 682,605 N dan tegangan maksimum terendah ialah kedalaman pemotongan 0.025 inch sebesar 197,503 N. Adapun nilai temperatur hasil pemotongan tergantung pada kondisi chips saat pemotongan.
Co-Authors Ekawati, Mahlina Roberth Marshall Ratlalan