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All Journal Majalah Ilmiah MOMENTUM INOVTEK POLBENG Infotekmesin Dinamika Bahari: Journal of Maritime Dynamic Jurnal Pengabdian UNDIKMA Majalah Ilmiah Gema Maritim DEVICE Jurnal Visi Pengabdian Kepada Masyarakat ARMATUR : Artikel Teknik Mesin dan Manufaktur ALMUJTAMAE: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Kepada Masyarakat Abdi Nusa Jurnal Pengabdian Kepada Masyarakat Abdi Putra Jurnal Maritim Polimarin Sewagati: Jurnal Pengabdian Masyarakat Indonesia International Journal of Educational Research Excellence (IJERE) Jurnal Masyarakat Mengabdi Nusantara Indonesian Research Journal on Education Kolaborasi: Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat Jurnal Kemitraan Masyarakat Palawa Jurnal Pengabdian Kepada Masyarakat
Wahyu Ari Putranto
Politeknik Maritim Negeri Indonesia
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Pengaruh Post Welding Heat Treatment (PWHT) Pada Friction Stir Welding Pada Material Aluminium AA5052/6061 Terhadap Sifat Mekanik dan Struktur Mikro Wahyu Ari Putranto; Khaeroman Khaeroman; Akhmad Nuriyanis; Arif Rakhman Suharso; Evi Sirait
Infotekmesin Vol 17 No 1 (2026): Infotekmesin: Januari 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v17i1.3056

Abstract

The development of technology in the maritime sector is very rapid in the manufacture of aluminum ships. Friction Stir Welding (FSW) is a green technology in the metal joining process. Post Welding Heat Treatment (PWHT) is one way to increase the loss of strength of the material connection after the FSW process. The purpose of this study was to determine the effect of FSW results before and after PWHT. Aluminum alloy (AA) series 5052 and 6061 were used as research materials because they are resistant to seawater. FSW parameters were spindle speed 1500 rpm (clockwise), travel speed 30 mm/min, tool depth 0.2 mm, and tool tilt 1o. PWHT parameters were heating the FSW material in a furnace to a temperature of 550°C (10, 30 minutes), water quenching, and artificial aging to a temperature of 180°C for 7 hours. The material was characterized by tensile testing, hardness, and micrography. The highest tensile strength and hardness values were 216 MPa and 68 HV, the smallest and uniform grain size in the weld zone and base metal areas were obtained at PWHT parameters of 30 minutes.
Analisis Keandalan Sistem Transfer Bulk Menggunakan Metode Reliability Centered Maintenance (RCM) Erwin Sutantyo; Purwanto Purwanto; Rahindra Bayu Kumara; Widar Bayu Wantoro; Irsat Surya Sekti; Wahyu Ari Putranto
Infotekmesin Vol 17 No 2 (2026): Infotekmesin: Juli 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/

Abstract

The Bulk Transfer System on Supply Vessels plays a crucial role in supporting offshore logistics, particularly in transferring bulk cement to drilling facilities. The system operates on pneumatic principles and is influenced by compressors, piping networks, mechanical components, and control devices. However, the current maintenance approach remains reactive, increasing the risk of recurring operational failures. This study aims to evaluate system reliability and determine an optimal risk-based maintenance strategy using Reliability Centered Maintenance (RCM). The analysis includes system function identification, Failure Mode and Effect Analysis (FMEA), and Logic Tree Analysis (LTA). The results show that the transfer pipeline has the highest risk (RPN 48), followed by the air compressor unit, air receiver tank, and safety system (RPN 36). LTA indicates that most failures are evident with Operational Consequences, while safety system failures are categorized as Safety Consequences. The application of RCM effectively improves overall system reliability.
Co-Authors ABDUL HAMID Agung Nugroho Akhmad Nuriyanis Arif Rakhman Suharso Ario Hendartono Artiyasa, Martina Bagus Viky Satriatama Bustama, Akhirul Andra Deri Herdawan Dewa Gede Alit Astawa Erwin Sutantyo Erwin Sutantyo Evi Sirait Gunawan Budi Santoso Heri Kiswanto Heri Kiswanto Hero Budi Santoso Indah Nurhidayati Irsat Surya Sekti Jaya, Agil Putra Juwarlan Juwarlan Khaeroman Khaeroman, Khaeroman Kiswanto, Heri Kiswanto Marina Artiyasa ngatmin ngatmin Ngatmin Ngatmin Noor Taufiq Saleh Noviarianto, Noviarianto Nugroho, Agung Nugroho, Anang Budhi Nur Kholis Nur Kholis Okpina Rochadian Prijo Harsono Priyanto, Tegar Purwanto Rahindra Bayu Kumara Rifki Arya Wiguna Saleh, Noor Taufiq Sandy Setyawan Shendi May Rudin Solly Aryza Sri Tutie Rahayu SUSANTO Susanto Susanto Susanto Susanto Susanto Susanto Sutrimo SUYONO Suyono Suyono Suyono Suyono Widar Bayu Wantoro Yulius Oscar Yulius Oskar