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All Journal Jurnal Airaha Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Jurnal Bluefin Fisheries Jurnal Airaha
Ahmad Tubagus Tsani Risqi Aji
Politeknik Kelautan dan Perikanan Bitung
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Mechanical Engineering Social Sciences Transportation

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Analisa Kekuatan Tarik dan Kekuatan Impact Propeller Alumunium Die Casting (ADC) 12 dengan Penambahan Cu-Zn Ahmad Ilham Ramadhani; Barokah Barokah; Fahriadi Pakaya; Jozua Ch. Huwae; Marinus S. Tappy; Andie Murtono; Ahmad Tubagus Tsani Risqi Aji
Jurnal Airaha Vol 11 No 01: June 2022
Publisher : Sorong Marine and Fisheries Polytechnic, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/ja.v11i01.320

Abstract

Propeller kapal nelayan umumnya terbuat dari aluminium yang mudah mengalami kerusakan pada saat dihantam batu karang, ombak dan mengalami korosi. Maka dilakukan pengembangan dengan penambahan kuningan (Cu-Zn) terhadap material propeller ADC 12. Spesimen berhasil dibuat dengan penambahan 30% Cu-Zn pada ADC 12 dengan menggunakan metode pengecoran yang dilanjutkan pencetakan dengan metode die dan sand casting. Spesimen ADC 12 dan paduan ADC 12+CuZn diuji tarik dan impak sesuai standard ASTM E8 dan ASTM E23 untuk mengetahui perubahan sifat mekanik material tersebut. Berdasarkan hasil pengujian tarik diperoleh bahwa adanya unsur Cu-Zn menurunkan kekuatan tarik ADC 12 (141 MPa) dan paduan ADC 12+CuZn (55,1 Mpa). Hasil pengujian kekuatan impact menunjukkan tingkat kekuatan impact kekerasan rata-rata ADC 12 (15,61 joule) dan paduan ADC 12+CuZn (15,98 joule).
PENGARUH KOMPOSISI CU-ZN TERHADAP TINGKAT KEKERASAN DAN STRUKTUR MIKRO ALUMINIUM DIE CASTING (ADC) 12 SEBAGAI BAHAN PROPELLER Ahmad Ilham Ramadhani; Barokah Barokah; Fahriadi Pakaya; Jozua Ch. Huwae; Marinus S. Tappy; Andie Murtono; Ahmad Tubagus Tsani Risqi Aji
JURNAL BLUEFIN FISHERIES Vol 3, No 2 (2021)
Publisher : Politeknik Kelautan dan Perikanan Bitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.352 KB) | DOI: 10.15578/jbf.v3i2.114

Abstract

Propeller is one of the important components of a ship. Generally, propellers are made of aluminum which is easily damaged when hit by waves and corrosion. The development is done by adding brass (Cu-Zn) on ADC 12. The sample was successfully made with a ratio of 70% ADC 12 : 30% Cu-Zn using the casting method and then cooled at room temperature followed by die casting and sand casting processes. The sample was tested for hardness using the Rockwell method according to the ASTM E18 standard and the microstructure test on the sample. Based on the test results obtained an average hardness level of 72.6 HRC and the formation of Al-Si-Mg, α-Al, Cu, Zn in the sample which shows the distribution of non-ferrous material in ADC-12. Keywords : ADC 12; Cu-Zn; propeller; microstructure; hardness
Analisa Kekuatan Tarik dan Kekuatan Impact Propeller Alumunium Die Casting (ADC) 12 dengan Penambahan Cu-Zn Ahmad Ilham Ramadhani; Barokah Barokah; Fahriadi Pakaya; Jozua Ch. Huwae; Marinus S. Tappy; Andie Murtono; Ahmad Tubagus Tsani Risqi Aji
Jurnal Airaha Vol 11 No 01: June 2022
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (483.642 KB) | DOI: 10.15578/ja.v11i01.320

Abstract

Propeller kapal nelayan umumnya terbuat dari aluminium yang mudah mengalami kerusakan pada saat dihantam batu karang, ombak dan mengalami korosi. Maka dilakukan pengembangan dengan penambahan kuningan (Cu-Zn) terhadap material propeller ADC 12. Spesimen berhasil dibuat dengan penambahan 30% Cu-Zn pada ADC 12 dengan menggunakan metode pengecoran yang dilanjutkan pencetakan dengan metode die dan sand casting. Spesimen ADC 12 dan paduan ADC 12+CuZn diuji tarik dan impak sesuai standard ASTM E8 dan ASTM E23 untuk mengetahui perubahan sifat mekanik material tersebut. Berdasarkan hasil pengujian tarik diperoleh bahwa adanya unsur Cu-Zn menurunkan kekuatan tarik ADC 12 (141 MPa) dan paduan ADC 12+CuZn (55,1 Mpa). Hasil pengujian kekuatan impact menunjukkan tingkat kekuatan impact kekerasan rata-rata ADC 12 (15,61 joule) dan paduan ADC 12+CuZn (15,98 joule).
Eksperimen Konsumsi Beberapa Jenis Bahan Bakar Pada Mesin Diesel 7 HP Silinder Tunggal Barokah Barokah; Muhammad Bintang Fikri; Ahmad Tubagus Tsani Risqi Aji; Marinus Tappy; Wiratno Wiratno; Putu Deny Darmawan
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30748

Abstract

The use of fuel oil to generate heat or power in the industrial world is still a major concern for researchers. Fuel quality, performance, emissions, and economic factors are some of the parameters that need to be considered for various types of fuel. In Indonesia, there are several types of diesel fuel including Pertamina Dex, Dexlite and Biosolar (B30). Of course, these fuels have different characteristics. To be able to know the character of the fuel, it is necessary to test the fuel on a diesel engine. In this study, an experiment was carried out using this fuel in a Jianfa brand diesel engine with a power of 7 HP type R175A without load with various variations of rpm, namely 1000, 1200, 1400, 1600, 1800, 2000, 2200. The experiment applies to three types of fuel, namely Biosolar (B30), Pertamina Dex, and Dexlite. Consumption is measured in units of time (seconds) per 50 milliliters. From the experiments it was found that Biosolar (B30) occupies the lowest position as evidenced by the duration of time to spend 50 milliliter at 2000 rpm only takes 49 seconds, Dexlite 63 seconds while Pertamina Dex 70 seconds. So it can be concluded that Pertamina Dex is the most economical compared to Dexlite and Biosolar (B30).
Prototipe Perahu Listrik: Pengaruh Ukuran Propeller Terhadap Resistance dan Power Pada Software Maxsurf Resistance Ahmad Ilham Ramadhani; Dwi Dharma Arta Kusuma; Andie Murtono; Ahmad Tubagus Tsani Risqi Aji
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30775

Abstract

The boat model as a prototype of an electric boat has been successfully modeled and simulated using Maxsurf software. The research aims to determine the resistance and power values of the boat when operating using the Holtrop method. The Pakura boat was modeled using a Maxsurf modeler and simulated using Maxsurf resistance. Based on the modeling results, it shows that the boat model corresponds to the main dimensions in real conditions. The Pakura boat model has a displacement of 320.5 kg, amidship and immersed draft of 0.25 m, and a wetted area of 2.94 m2. The resistance and power are calculated using the resistance and power holotrop methods. Based on the simulation results, we obtained a prototype model of an electric boat that can operate on a certain propeller size. The maximum speed of the electric boat prototype with a 7-inch propeller is 4.31 kn. At 1500 rpm, the boat receives an HR of 92.71 N and requires a power of 205.57 W. On an 8-inch propeller that is 4.82 kN. At 1500 rpm, the boat receives an HR of 121.83 N and requires a power of 302.08 W. The size of the propeller affects the resistance value and power of the boat. The resistance value of the boat and operating power requirements increase along with changes in rpm on the electric engine. This can be used as a reference in determining the propulsion components for an electric boat prototype.
Co-Authors Ahmad Ilham Ramadhani Andie Murtono Barokah Barokah Barokah Barokah Dwi Dharma Arta Kusuma Jozua Ch. Huwae Marinus S. Tappy Muhammad Bintang Fikri Pakaya, Fahriadi Putu Deny Darmawan Wiratno Wiratno