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Juniawan Preston Siahaan
Politeknik Kelautan dan Perikanan Dumai
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Material and process parameter optimization for dimensional accuracy in Fused Deposition Modeling 3D printing Rizqi Ilmal Yaqin; Juniawan Preston Siahaan; Mula Tumpu; Bagas Prakoso; Ade Hermawan; Febi Luthfiani; Barokah Barokah; Ahmad Kurniawan
Jurnal Polimesin Vol 22, No 6 (2024): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i6.5716

Abstract

The production of complex machine components requires advanced and accurate techniques. Achieving optimal quality through 3D printing involves carefully examining the process parameters. However, many studies have not thoroughly explored the impact of these parameters on parts produced using Fused Deposition Modeling (FDM) 3D printing. This study evaluates how process parameters and material variations affect the dimensional accuracy of printed parts. The study focuses on input variables such as material type, infill density, infill pattern, and raster angle. Using the fractional L9 Taguchi method, the optimal settings identified were PLA+ material, 80% infill density, an infill grid pattern, and a 0° raster angle, resulting in a 1.39%-dimensional deviation and an S/N ratio of -3.29 dB. ANOVA analysis reveals material type as the most significant factor, contributing 49.81% to performance. These findings, complemented by statistical analyses, can guide decision-making in industrial applications and serve as a reference for selecting FDM 3D printing settings related to dimensional accuracy to print components in the industry.
PENILAIAN DAN PENGENDALIAN RISIKO KESELAMATAN KERJA PADA AKTIVITAS OPERASIONAL KAPAL PERIKANAN Yasmin Humaira Rahmad; Suci Asrina Ikhsan; Alek Topani Lubis; Tata Irfadinata; Juniawan Preston Siahaan; M. Zaki Latif Abrori; Bobby Demeianto; Mula Tumpu
Jurnal Salamata Vol 8, No 1 (2026): Juni 2026
Publisher : Politeknik Kelautan dan Perikanan Bone

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/salamata.v8i1.18197

Abstract

Keselamatan kerja awak kapal penangkap ikan menjadi aspek penting dalam menjaga keberlanjutan usaha perikanan tangkap. Penelitian ini bertujuan untuk menganalisis risiko dan menyusun prosedur kerja aman dengan mengintegrasikan metode HIRADC (Hazard Identification, Risk Assessment, and Determining Control) dan JSA (Job Safety Analysis) pada kapal penangkap ikan. Pendekatan deskriptif-kualitatif digunakan melalui observasi, wawancara, dan telaah dokumen keselamatan terhadap tiga area utama kapal: dek penangkapan (deck area), kamar mesin (engine room), dan ruang penyimpanan hasil tangkap (fish hold). Analisis HIRADC mengidentifikasi 15 aktivitas utama dengan risiko bervariasi dari rendah hingga tinggi. Lima kegiatan dengan tingkat risiko tertinggi yaitu menarik jaring, mengoperasikan winch, pemeriksaan oli dan filter, pengisian bahan bakar, dan pengambilan hasil tangkapan di palka. Selanjutnya dilakukan dianalisis menggunakan metode JSA untuk menentukan langkah pengendalian spesifik. Hasil penelitian menunjukkan bahwa penerapan kontrol teknis, administratif, dan penggunaan alat pelindung diri mampu menurunkan tingkat risiko kerja hingga dua kategori dalam matriks penilaian. Integrasi metode HIRADC dan JSA menghasilkan sistem pengendalian risiko yang komprehensif dan aplikatif, meningkatkan kesadaran keselamatan (safety awareness), memperkuat budaya keselamatan di kapal serta mendukung penerapan standar internasional.Occupational safety for fishing vessel crews is a crucial aspect in ensuring the sustainability of capture fisheries operations. This study aims to analyze occupational risks and develop safe working procedures by integrating HIRADC (Hazard Identification, Risk Assessment, and Determining Control) and JSA (Job Safety Analysis) methods on fishing vessels. A descriptive qualitative approach was employed through observation, interviews, and document review focusing on three main vessel areas: the deck area, engine room, and fish hold. The HIRADC analysis identified 15 major activities with varying levels of risk, ranging from low to high. Five high-risk activities hauling nets, operating winches, checking oil and filters, refueling, and unloading fish in the hold were further analyzed using the JSA method to determine specific control measures. The results indicate that implementing engineering, administrative, and personal protective equipment controls effectively reduced work risks by up to two categories in the risk matrix. The integration of HIRADC and JSA provides a comprehensive and practical risk control system, enhances safety awareness, strengthens the onboard safety culture, and supports compliance with international standards.
Co-Authors Abrori, M. Zaki Latif Ade Hermawan Adian Febriyanto Ahmad Kurniawan Alek Topani Lubis Andie Murtono Angger Bagus Prasetiyo Bagas Prakoso Bambang Hari Priyambodo Barokah Basino, Basino Bobby Demeianto Bobby Demeianto Bobby Demianto Boby Wisely Ziliwu Boby Wisely Ziliwu Daging, I Ketut Dendi Haris Febi Luthfiani Hafiz Ziddin Iskandar Musa Iskandar Musa M Subroto Alirejo M. Subroto Alirejo Martin Martin Mega Lazuardi Umar Miftahul Huda Muhammad Ali Rozaki Muhammad Nur Arkham Mula Tumpu Nirmala Efri Hasibuan Ratih Purnama Sari Riski Rahmat Rizqi Ilmal Yaqin Rudi Efendi Sigiet Haryo Pranoto Suci Asrina Ikhsan Syauqiy Ridlo Robbiy Tata Irfadinata Yasmin Humaira Rahmad Yuniar Endri Priharanto Zamri Zamri Zamri