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All Journal Jurnal Energi Dan Manufaktur JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Advance Sustainable Science, Engineering and Technology (ASSET)
I Nyoman Jujur
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Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Penerapan teknologi investment casting pada pembuatan kerajinan perak I Nyoman Gde Antara; I Nyoman Jujur
Jurnal Energi Dan Manufaktur Vol 2, No.1 Juni 2007
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (20.291 KB)

Abstract

Technology of investment casting has been successfully introduced and applied to the process in producing rings of silver jewelry in cooperative members of silver craftsmen association in Desa Celuk Sukawati Gianyar Bali. In this experiment, the casting equipments used were a principal modified casting machine to avoid a costly production. It was found that the application of investment casting was very prospective method. At once process of the application that took less than a working day, 17 pieces of ring could be produced, where 9 pieces (53%) were excellent and 8 pieces (47%) were invalid. This success is believed can be improved effectively either by controlling or optimizing the working parameters of each equipments in advance. Therefore, the application of the investment casting in producing silver jewelry will assist craftsmen not only to increase their products quality and quantity, but it also will prevent a high production cost compared to those of producing traditionally.
Perancangan dan Simulasi Pembebanan pada Rangka Mesin Penghancur dan Ekstruder Filamen Saleh, Yasya Khalif Perdana; Fitrah Agustian; Priyadi, M Untung Zaenal; Muhammad Luqman Saiful Fikri; Mohamad Zaenudin; I Nyoman Jujur
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 01 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i01.185

Abstract

Meningkatnya limbah plastik mendorong pengembangan teknologi daur ulang yang berkelanjutan, salah satunya adalah konversi limbah polimer menjadi filamen untuk pencetakan 3D. Penelitian ini bertujuan untuk merancang dan mensimulasikan pembebanan pada rangka mesin penghancur dan ekstruder filamen sebagai bagian dari sistem pengolahan limbah plastik. Proses penelitian meliputi identifikasi kebutuhan pengguna, penyusunan spesifikasi teknis, pengembangan dan seleksi konsep desain menggunakan metode matriks keputusan, hingga analisis numerik berbasis Finite Element Analysis (FEA). Dari tiga alternatif desain, konsep 3 terpilih dengan nilai evaluasi tertinggi (29 dari 40). Simulasi struktural dilakukan pada tiga jenis material: Aluminium 6061, Steel AISI 5140, dan Steel AISI 1018 HR. Hasil menunjukkan bahwa Steel AISI 5140 memiliki performa struktural terbaik dengan tegangan Von Mises terendah (40,18 MPa), faktor keamanan tertinggi (10,41), dan displacement yang relatif rendah (1,215 mm). Dengan mempertimbangkan kekuatan, kekakuan, dan margin keamanan, Steel AISI 5140 dipilih sebagai material optimal untuk pembuatan prototipe. Penelitian ini membuktikan bahwa pendekatan berbasis pemodelan dan simulasi mampu menghasilkan desain yang andal dan siap untuk tahap pengembangan lebih lanjut.
Cam Simulation and Dimensional Verification of CNC-Machined Orthopaedic Femoral Components: Toolpath Optimization and 3D-Scan Metrology Setyoadi, Yuris; Rifky Ismail; Bayuseno, Athanasius Priharyoto; I Nyoman Jujur; Novriansyah, Robin; Darmanto; Prawibowo, Hartanto; Anggoro, Paulus Wisnu
Advance Sustainable Science Engineering and Technology Vol. 8 No. 2 (2026): February-April
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i2.2760

Abstract

This study investigates the optimization of manufacturing femoral components for Total Knee Replacement (TKR) using Computer-Aided Manufacturing (CAM) simulation and 5-axis CNC milling, followed by dimensional verification based on 3D scanning. The machining process was simulated in Autodesk PowerMill to generate collision-free toolpaths for AISI 316L stainless steel. Dimensional verification was conducted by comparing the 3D-scanned physical model (using Creality CR-Scan Ferret Pro) with the original CAD model in Geomagic Control X. The metrological analysis showed a Root Mean Square (RMS) deviation of 0.5317 mm and an average positive deviation of 0.2572 mm. Spatial deviation analysis revealed significant dimensional variations, with a maximum deviation of +2.5761 mm and a minimum deviation of -2.5713 mm. Specifically, in critical functional regions, the medial and lateral condyles exhibited deviations ranging from -0.4683 mm to 0.232 mm, while the patellar groove showed a deviation of 0.1989 mm. Although the machining strategy successfully produced the complex implant geometry, the tolerance distribution data indicated that only 17.22% of the surface fell within the strictly specified tolerances, highlighting the need for further optimization of cutting parameters and fixturing strategies to minimize surface roughness and dimensional inaccuracies.
Co-Authors Atanasius Priharyoto Bayuseno Darmanto Fikri, Muhammad Luqman Saiful Fitrah Agustian I Nyoman Gde Antara Mohamad Zaenudin Muhammad Untung Zaenal Priyadi Novriansyah, Robin Paulus Wisnu Anggoro Prawibowo, Hartanto Rifky Ismail Yasya Khalif Perdana Saleh Yuris Setyoadi