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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
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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Pemberdayaan Masyarakat Desa Melalui Pelatihan Teknis Operasional Mesin Cetak Pelet bagi Kelompok Budidaya Ikan Kelurahan Beji Kabupaten Semarang Sri Tutie Rahayu; Dewa Gede Alit Astawa; Arif Rakhman Suharso; Wahyu Ari Putranto; Sandy Setyawan
Jurnal Pengabdian UNDIKMA Vol. 4 No. 4 (2023): November
Publisher : LPPM Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v4i4.8896

Abstract

This service aims to increase the knowledge and skills of the fish farming group in Beji Village, Semarang Regency, regarding the operational technicalities of pellet printing machines to empower village communities. The method used in this service was training, which included lectures, questions and answers, and direct practice in making fish food pellets with material provided to participants, including knowledge of tool operation, tool components, and troubleshooting on tools. This service partner was a fish farming group in Beji Village, East Ungaran District, to improve the community's economic level around the new campus of the Indonesian State Maritime Polytechnic in Ngobo sub-district, which borders Beji sub-district. This service evaluation instrument used an assessment of the training participants by practicing operating, disassembling, and installing spare parts for the fish pellet printing machine themselves. The results of this service showed that most members of the fish farming group in Beji sub-district could operate the fish pellet press and care for it well. Apart from that, the quality and quantity of catfish feed increased because the the fish farming group had been able to produce fish feed independently.
Pembuatan Pakan Ikan Pada Kelompok Budidaya Ikan di Ungaran Untuk Mengurangi Biaya Produksi Deri Herdawan; Sri Tutie Rahayu; Susanto Susanto; Widar Bayu Wantoro; Noviarianto Noviarianto; Arif Rakhman Suharso; Wahyu Ari Putranto; Nur Kholis
Kolaborasi : Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat Vol. 2 No. 2 (2024): Juni : Kolaborasi : Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/kolaborasi.v2i2.113

Abstract

This community service program is carried out in Beji Village, East Ungaran District, which is around the Indonesian State Maritime Polytechnic campus. This activity is a continuation of the previous service roadmap in the same place where in the previous service activity, making fish food using a pellet molding machine using a petrol motor, this time making fish food using a manual fish pellet molding machine. The aim is to introduce MSME service partners to the fish cultivation group in Beji sub-district about the types of fish pellet molding machines so that they can meet fish feed needs to save production costs. The method for implementing this activity is by providing training by sharing knowledge about the parts of the fish pellet molding machine and the composition of the ingredients that make up good fish feed, followed by the practice of making fish feed using a manual pellet molding machine.
Pengaruh Quenching Terhadap Sifat Mekanik dan Struktur Mikro Baut Connecting Rod Bekas Untuk Alat Gesek FSW Ari Putranto, Wahyu; Khaeroman; Susanto; Herdawan, Deri; Noviarianto
Infotekmesin Vol 16 No 1 (2025): Infotekmesin: Januari 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i1.2531

Abstract

One method of joining soft metals such as aluminum that is widely used is Friction Stir Welding (FSW). The friction tool is a very important part of FSW. Friction tools are usually made from hardened H13 steel. This research aims to make a friction tool from steel connecting rod bolts used in marine diesel engines. The experimental methods used include FSW tool design, heat treatment of the material at a temperature of 900oC followed by a quenching process with water and salt water cooling media, then continued with material testing (chemical composition test, hardness test, and micrographic test). The test results obtained from the chemical composition test show that the connecting rod bolts include AISI 4145 steel material. The highest hardness value obtained from the connecting rod steel in the saltwater quenching process was 52.67 HRC with a martensite phase, as seen from the micrographic test. Used steel connecting rod bolts from marine diesel engines can be used as FSW friction tool material.
Pemodelan dan Ekperimental Performa Variasi Tekanan Kerja Injektor Mesin Diesel Induk Kapal terhadap Bentuk Semburan Nosel dan Temperatur Gas Buang Tiap Silinder Ari Putranto, Wahyu; Khaeroman, Khaeroman; Susanto, Susanto; Nugroho, Agung
Majalah Ilmiah Gema Maritim Vol 25 No 2 (2023): Gema Maritim Vol 25 No 2 Bulan September 2023
Publisher : Politeknik Bumi Akpelni

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37612/gema-maritim.v25i2.340

Abstract

The main diesel engine is a main propulsion engine that functions to move the ship. Diesel engines include the type of internal combustion engine (internal combustion engine). The combustion ignition process is carried out by spraying fuel into pressurised and high-temperature air due to compression. An injector is a device used to fog fuel. The purpose of this study is to obtain optimal parameters for the performance of the injector's working pressure. The methods used in this study are experimental and modelling. The data obtained are spray angle, length, time, and number of particles sprayed. The method used in this study is by testing injectors experimentally and simulating using CFD software. The injector input pressure parameters are 280, 300, and 320 bar while the nozzle diameter is 0.3 mm. The data obtained on the ship was then tested experimentally and simulated. In this study, there were 3 injector parameters tested. The test results of the three parameters on the injector obtained optimum data, namely at a working pressure of 320 bar nozzle diameter of 0.3 mm resulting in a spray angle of 14o, spray length of 100 mm with the fastest time of 0.00143 seconds to produce a speed of 69930.07 mm / s. The number of particles produced is 1.185071x103, so the fogging process is perfect (bursts evenly in all directions) and the temperature of the cylinder exhaust gas is 340-3600C.
Pelatihan Penggunaan Perangkat Lunak Design Engineering di SMA Negeri 14 Semarang Suharso, Arif Rakhman; Putranto, Wahyu Ari; Hendartono, Ario; Kholis, Nur; Artiyasa, Martina; Saleh, Noor Taufiq
Palawa: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 1 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/palawa.v2i1.8791

Abstract

Negara dikatakan unggul tidak hanya  dari segi kekayaan sumber daya alamnya, tetapi juga dari segi ketersediaan dan keunggulan sumber daya manusia yang berkualitas. Era industri berbasis teknologi menggunakan komputer semakin menuntut kompetensi sumber daya manusia agar memiliki daya saing. Rekayasan design engineering tidak lagi dibuat secara konvensional. Kemampuan menggunakan software engineering untuk menggambar teknik menjadi ketrampilan yag bermanfaat besar. Computer-aided design atau CAD merupakan teknologi desain dan dokumentasi teknis. Metode pelatihan ini menggunakan presentasi, demonstrasi, dan praktik menggunakan CAD. Pelatihan ditargetkan pada siswa SMA N 14 Semarang yang sebelumnya belum pernah mendapat materi terkait CAD. Hasil pelatihan ini berupa model gambar. Berdasarkan observasi dan evaluasi, kegiatan ini memberikan dampak positif bagi peserta. Ketertarikan mereka pada dunia CAD muncul karena mereka melihat manfaatnya. Beberapa kendala dan tantangan ditemukan selama pelaksanaan kegiatan, dan perlu ditindaklanjuti agar kegiatan selanjutnya berjalan dengan lebih optimal.
Optimization of CNC Machining Parameters (Cutting Speed and Feed Speed) on 7075 Aluminum Material to Achieve Minimum Surface Roughness Harsono, Prijo; Suyono, Suyono; Noviarianto, Noviarianto; Putranto, Wahyu Ari
Indonesian Research Journal on Education Vol. 5 No. 6 (2025): Irje 2025
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/irje.v5i6.3671

Abstract

This study examines the optimization of CNC milling machining parameters on 7075 aluminum material to achieve minimum surface roughness through a qualitative research approach. 7075 aluminum is a high-grade aluminum alloy with superior mechanical properties that is widely used in the aviation and automotive industries. The study was conducted by analyzing the effect of cutting speed (Vc) and feed rate (f) on the surface quality of the machined results. The research method uses a qualitative descriptive approach through in-depth observation data collection techniques, structured interviews with operators and technicians, and documentation of the machining process. Research data were obtained from surface roughness measurements using a surface roughness tester (Ra) and visual analysis using machine vision techniques. The results of the analysis show that the combination of an optimal cutting speed of 300-400 m/min and a feed rate of 0.1-0.15 mm/rev produces the lowest surface roughness on 7075 aluminum material. The use of appropriate coolant and maintenance of carbide cutting tools are very significant in achieving optimal surface results. The findings of this study are expected to provide practical guidance for the manufacturing industry in optimizing the CNC machining process for 7075 aluminum material to improve product quality and productive efficiency while still considering industrial sustainability.
Pengaruh variasi Tekanan dan level air tangki Hydrophore terhadap laju aliran massa pada sistem distribusi air tawar -, Susanto; Gunawan Budi Santoso; Yulius Oscar; Wahyu Ari Putranto; Widar Bayu Wantoro
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10786

Abstract

The paper is The performance of water distribution in buildings is strongly influenced by the relative position of the reservoir and the outlet pipe. This represents an important technology transfer for enhancing building services engineering. This study examines the performance of a hydrophore system under variations in pipe height, water level, and tank pressure. Experiments were conducted using pipe heights of 1, 2, and 3 meters; water levels of ¼, ½, and ¾ of the tank capacity; and tank pressures of 1, 2, and 3 bar. Pressure adjustments were made by adding or releasing compressed air. System performance was evaluated by measuring the mass flow rate through one, two, and three outlet pipes operated individually and simultaneously. The highest mass flow rate for a single outlet pipe was achieved at a ½ water level and 3 bar pressure, yielding 67.87 kg/min through outlet pipe 2. For two outlet pipes, the maximum values were obtained at a ¼ water level and 3 bar, producing 72.75 and 73.25 kg/min. With all three outlets open, the highest flow rate reached 79.69 kg/min at a ½ water level and 3 bar. Overall, water level, tank pressure, pipe height, and the number of open outlets significantly affect distribution performance and must be considered in system design for multi-level buildings
Pengaruh Post Welding Heat Treatment (PWHT) Pada Friction Stir Welding Pada Material Aluminium AA5052/6061 Terhadap Sifat Mekanik dan Struktur Mikro Ari Putranto, Wahyu; Khaeroman, Khaeroman; Nuriyanis, Akhmad; Suharso, Arif Rakhman; Sirait, Evi
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.
Pelatihan Pembuatan Pelet Apung pada UMKM Kelompok Budidaya Ikan Omah Jala Arif Rakhman Suharso; Anang Budhi Nugroho; Ario Hendartono; Wahyu Ari Putranto; Hero Budi Santoso; Akhmad Nuriyanis
Jurnal Kemitraan Masyarakat Vol. 3 No. 1 (2026): Maret : Jurnal Kemitraan Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/jkm.v3i1.2553

Abstract

The extruder-type floating pellet machine is a form of appropriate technology that works by using a screw system to push the raw material while applying pressure to form dense pellets. The main source of raw material for making these pellets comes from trash fish, which are small fish caught by fishermen that are unfit for consumption and have low economic value. Trash fish are relatively cheap because they are classified as non-economical, but they have great potential for use as fish feed. Their distinctive strong aroma can stimulate fish appetite, while their relatively high protein content makes them an ideal source of nutrition. Before use, the trash fish are first dried and then ground using a flour machine to achieve a fine texture. The floured material is then mixed and the moisture content is adjusted to around 42%, so that the extrusion process can run optimally when using the extruder-type pellet machine. The material formulation consists of 70% trash fish meal, 15% corn meal, and 15% wheat flour. The resulting pellets are then tested in a feed laboratory and show protein levels ranging from 30-40%, depending on the quality of the trash fish raw material used. This community service activity involves fish farmer groups in the Beji area, East Ungaran District, which is expected to increase fish farmer insight on how to make floating pellets using an extruder type pellet printing machine.
Co-Authors ABDUL HAMID Agung Nugroho Akhmad Nuriyanis Anang Budhi Nugroho Arif Rakhman Suharso Ario Hendartono Artiyasa, Martina Bustama, Akhirul Andra Deri Herdawan Dewa Gede Alit Astawa Erwin Sutantyo Gunawan Budi Santoso Heri Kiswanto Hero Budi Santoso Indah Nurhidayati, Indah Jaya, Agil Putra Juwarlan Juwarlan Khaeroman Khaeroman, Khaeroman Kiswanto, Heri Kiswanto Marina Artiyasa Noor Taufiq Saleh Noviarianto, Noviarianto Nugroho, Agung Nur Kholis Nur Kholis Okpina Rochadian Prijo Harsono Priyanto, Tegar Rifki Arya Wiguna Rony, Zahara Tussoleha Saleh, Noor Taufiq Sandy Setyawan Sirait, Evi 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