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All Journal Turbo : Jurnal Program Studi Teknik Mesin Machine : Jurnal Teknik Mesin Manutech : Jurnal Teknologi Manufaktur J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin jurnal syntax admiration ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Teknologi Dulang: Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan The Indonesian Journal of Computer Science
Rollastin, Boy
Politeknik Manufaktur Negeri Bangka Belitung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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UJI EKSPERIMENTAL TIPE TWIN WATERJET THRUSTER MENGGUNAKAN MATERIAL STAINLESS STEEL 304 Hasdiansah, Hasdiansah; Ferzy Ersandy; Boy Rollastin; Muhammad Subhan; Faiz Maulana Akbar
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.v7i1.10172

Abstract

Maritime is a vital sector that highly depends on ship propulsion systems to support mobility and maritime security. One of the developing propulsion technologies is the waterjet thruster, which provides advantages in maneuverability, efficiency, and resistance to cavitation for high-speed vessels. This study aims to experimentally investigate the performance of a twin waterjet thruster made of stainless steel 304. The prototype was designed using SolidWorks software with a configuration of 12-blade inlet, 3-blade impeller, and 12-blade outlet, and tested using a 22 HP combustion engine at 2,300 rpm in a water test tank. The results showed thrust values of 23 kg, 24 kg, and 25 kg with an average of 24 kg or 235.44 N. The variations were influenced by water flow conditions, pump pressure, and engine stability. Overall, the twin waterjet thruster made of stainless steel 304 proved to be effective, consistent, and has the potential for further development with higher engine speeds or different drive types for real ship applications.
Analisis Perbandingan Kekuatan Mekanik Komposit Resin Polyester Berpenguat Serat Sabut Kelapa, Serat Ijuk, dan Serat Pohon Pisang sebagai Material Alternatif Pembuatan lambung Perahu Yuliyanto, Yulianto; Riska, Riska; Rollastin, Boy
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4626

Abstract

Keterbatasan material kayu konvensional sebagai bahan baku konstruksi perahu mendorong pengembangan material alternatif berbasis serat alami. Salah satu material alternatif yang bisa dijadikan material tersebut adalah material komposit. Material komposit adalah gabungan dari dua material yang terdiri dari perekat dan penguat. Penelitian ini bertujuan untuk menganalisis pengaruh variasi jenis serat sabut kelapa, serat ijuk dan serat pohon pisang terhadap kekuatan lentur dan ketahanan impak komposit yang diperkuat dengan resin polyester. Tiga jenis serat yang digunakan  diberi perlakuan dengan perendaman NaOH 5%. Pembuatan spesimen dilakukan metode hand lay-up dan pengujian mekanik mengacu pada standar ASTM D790-02 untuk bending dan ASTM E-23 untuk impak. Komposisi resin 70% dan serat 30%. Hasil pengujian bending tertinggi 69,63 Mpa pada komposit serat sabut kelapa dan nilai terendah 32,6 Mpa pada komposit serat ijuk. Pada pengujian impak nilai tertinggi 49,08 kj/m2 pada komposit serat kelapa dan nilai terendah sebesar 13,63 kj/m2 pada komposit serat ijuk. Hasilnya menunjukkan komposit serat sabut kelapa lebih baik dibandingkan serat batang pisang dan serat ijuk. Ini menunjukan bahwa kandungan hemiselulosa yang seimbang memberikan fleksibilitas tanpa mengurangi kekuatan. Berdasrkan BKI  komposit serat sabut kelapa bisa dijadikan bahan untuk pembuatan lambung  perahu
REKONDISI SISTEM VERTICAL MOVEMENT PADA MESIN PRECISION UNIVERSAL AND TOOL & CUTTER GRINDER TYPE JUNGNER US-350 Lorika, Zika; Rollastin, Boy; Sukanto, Sukanto
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

This study aims to recondition the vertical movement system of the Precision Universal and Tool & Cutter Grinder Jungner US-350 to restore the optimal functionality of the vertical head. The machine experienced failures in the threaded bushing, timing belt, and flat belt, affecting the cutting tool grinding process. The research applied an experimental approach, including data collection through technician interviews, visual inspection, and machine manual review, fault identification using the 5 Whys method, and repair or replacement of critical components according to technical specifications. Functional testing demonstrated smooth vertical movement, stable timing and flat belt operation, and machine performance meeting precision standards. The study shows that structured reconditioning is an effective solution for restoring the functionality of aging precision machines with limited spare parts, while providing practical guidance for maintenance and care of similar machines.
STUDI EKSPERIMEN PENGARUH KEKUATAN MATERIAL KOMPOSIT HGM, EPOXY DAN SERAT DAUN NANAS TERHADAP KEKUATAN TARIK DAN IMPAK Alfarizi, Muhammad; Rollastin, Boy; Sukanto, Sukanto
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Pineapple leaf fiber is one of the plantation wastes that is rarely processed and has a low selling value, Therefore, pineapple leaf fiber is used as a reinforcement for composite materials with an epoxy as a matrix and 16% filler material in the form of Hollow Glass Microsphere which is expected to produce renewable materials that can increase the selling value of the waste.. This study aims to determine how the effect of composite composition on tensile strength and impact of several parameters used. The testing process carried out is tensile test and charpy impact test with matrix and fiber volume fractions, namely, 74%:10%, 12.5%:71.5%  and 15%:69%  with horizontal and vertical fiber directions. Based on this study, specimens with a fiber fraction thickness of 15% with a vertical direction resulted in an average tensile strength of 84.83 MPa and the highest average impact strength was obtained in specimens with the same parameters is 0.1367 J/mm².
Co-Authors Abdallah, Fajar ade Ferdiansyah Alfarizi, Muhammad Alzamanur, Salas Deni Wahyudi Diah Mayleni Eril Kapri Erwansyah, Erwansyah Esya Abinda, Azora Faiz Maulana Akbar Ferzy Ersandy Galindra Mutiara Rahmatullah Harwadi, Harwadi Hasdiansah, Hasdiansah Hidayat, Rizal Tegu Husman Husman Idiar , Ilham Ary Wahyudie Juanda Juanda Juanda Kevin, Cristian Lorika, Zika Masdani, Masdani Muhammad Riyadi Muhammad Riyadi Muhammad Setya Pratama MUHAMMAD SUBHAN Muhammad Yunus Nanda Pranandita Novizal Novizal, Novizal Oktavianto, Mario Oktriadi, Yudi prasetyo, Iksan Pristiansyah, Pristiansyah Rendyatama Aprila Rienera, Salsabilla Rifky Rizaldy Riska Riska Sahril Mashuri Ihsan Sukanto Sukanto Veithzal Rivai Zainal Yang Agita Rindri Yuliyanto Yuliyanto Yuliyanto Zaldy Kurniawan Zulkarnein, Faruq Akbar