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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan INOVTEK POLBENG Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Majalah Ilmiah Pengkajian Industri Specta Journal of Technology EPI International Journal of Engineering International Journal of Marine Engineering Innovation and Research Journal of Marine-Earth Science and Technology PIKAT Media Elektrik
Andi Mursid Nugraha Arifuddin
Institut Teknologi Kalimantan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Transportation Other

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Experimental Study of Aluminium Joint Plate Between AA5052 with AA5083: Application on Hull Vessel Material Andi Mursid Nugraha Arifuddin; Taufik Hidayat; Muhammad Uswah Pawara; Muhammad Zulkifli
International Journal of Marine Engineering Innovation and Research Vol. 7 No. 2 (2022)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i2.5618

Abstract

Generally, the planning of the material arrangement of the aluminum hull plate is always carried out at an early stage to obtain a material formation that has good economic value. One of the strategies used to obtain economic value in shipbuilding is the use of various grades of plate material. The grade of aluminum material that is often used on ships is the 5xxx series. Where this series has many grades that can be used as ship hull material options. The price difference for each grade of aluminum material for ships is a very influential variable on the economic value of shipbuilding. However, before being applied to shipbuilding, it is necessary to test the feasibility of aluminum plate connections with variations in plate grade. The aim is to provide clear information regarding the technical feasibility of selecting material grades. Therefore, in this study, a simulation will be carried out to test the strength of the plate connection with variations in the grade of aluminum material using the experimental method. The plate joint test is carried out using only the Tensile test in the laboratory with reference to the ASTM rules. The grades of aluminum plate materials used are 5052 and 5083. Connection formations are between 5052-5052, 5083-5083, and 5052-5083. From the test results, the largest average yield stress value is 202.34 N/mm2 at the variation 5083-5083, the maximum average ultimate stress value is 261.70 N/mm2 at the variation 5083-5083. For the variation of the 5052-5083 plate connection, it still has a yield stress value that is greater than the basic yield stress of the material, namely 142.97 N/mm2. Where the percentage value of the achievement level of yield strength is 113.6% of the basic yield stress value of the material based on BKI rules. However, in achieving the ultimate stress value, it is still lower than the ultimate basic stress of the BKI rules standard material, which is 193.88 N/mm2. Where the percentage value of the level of ultimate strength achievement is 70.5% of the ultimate basic stress value of the BKI rules standard material.
Probability of Deck Wetness and Bottom Slamming due to Height and Wave Directions on Klotok Boat Andi Mursid Nugraha Arifuddin; Silvia Salsa Putri; Muhammad Uswah Pawara; Harlian Kustiwangsa; Jusma Wahidah; Fernanda Wahyu Pratama; Cindy Lionita Agusty
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Sailing safety is an important aspect that must be considered to ensure the safety of the crew and passengers. One aspect that affects sailing safety is the probability of deck wetness and bottom slamming on each ship. A research object is a traditional wooden boat hull operating on the Penjam - Balikpapan route that transports passengers and vehicles. The aim is to provide information regarding wave conditions that support the safe operation of klotok ships. In this study, the variations in wave arrival directions used are 45°, 90°, 135° and 180° with a ship speed of 8 knots, and variations in wave height are based on the sea state approach, namely sea state 1 (0.488 m), sea state 2 (1.006 m), sea state 3 (1.433 m), and sea state 4 (2.012 m). Furthermore, the m0 value is obtained as an important component to measure the occurrence of deck wetness and bottom slamming through an approximation formula and validated with the NORDFORSK 1987 criteria. The results of the study indicate that the highest probability value of deck wetness occurs in the direction of wave arrival 180° with a wave height at sea state 4 (2.102 m). While the highest probability value of bottom slamming occurs in 2 variations of wave arrival direction, namely 135° and 1800. The wave height that must be considered in the direction of wave arrival 135° is 1.433 m and 2.012 m. Meanwhile, if the direction of wave arrival is 180°, the wave height that must be considered is 1.006 m, 1.433 m, and 2.012 m. With initial information on the potential for deck wetness and bottom slamming, it can be recommended that ships will tend to sail safely if waves arrive at 450 and 900 degrees, while immediately avoiding ship movements in the direction of waves at 1350 and 1800 degrees, especially at extreme wave heights. This condition will occur if the gravity concentration position is in the forecastle position. Meanwhile, if the gravity concentration position is at the stern, the passenger room and vehicle deck show a probability value that tends to be safe.
MATERIAL RELIABILITY STUDY OF HIGH-SPEED SMALL CRAFT UNDER WAVE LOAD Amalia Ika Wulandari; Alamsyah A; Suardi S; Wira Setiawan; Muhammad Uswah Pawara; Andi Mursid Nugraha Arifuddin; Husein Syahab
Journal of Marine-Earth Science and Technology Vol. 5 No. 3 (2024): December
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v5i3.3921

Abstract

This study focuses on analyzing the structural characteristics of a small craft constructed using aluminum alloy compared with sandwich material structure. High speed vessels are designed to address key performance challenges such as vessel motion, engine efficiency, fuel consumption, and cargo capacity. However, to endure extreme wave induced loads, enhancement of vessel’s the structural strength is essential, especially in critical areas like the midship section. Analytical models and probabilistic methods are employed to predict structural performance under both constant and random wave loading conditions. Aluminum alloys are commonly chosen for fast boat construction due to their high strength to weight ratio and corrosion resistance. To evaluate structural behavior, simulations are carried out under varying wave heights and directions, providing insight into how the vessel performs in challenging marine environments. Load analysis is conducted using diffraction theory and the JONSWAP spectrum equation to determine the maximum bending moments experienced by the hull. The results show that both aluminum and sandwich structures exhibit similar reliability thresholds under wave-induced loading, but the sandwich structure consistently performs slightly better, with approximately 0.10% higher reliability. This suggests that sandwich materials offer improved structural integrity, making them the more suitable choice for high-speed small craft operating in wave conditions up to 2 meters. This analysis contributes to a deeper understanding of the reliability and performance of these materials, offering valuable guidance for designing and constructing high Small Crafts that perform efficiently and safely in demanding maritime operations.
Co-Authors Abd Haris Djalante Ade Khantari Adhy Rahmat Agus Budianto Alamsyah Alamsyah A Aldo Pangestu Amalia Ika Wulandari Amalia Ika Wulandari Andi Ardianti Andi Ardianti Andi Ardianti Andi Chairunnisa Mappangara Andi Dian Eka Anggriani Anggit Dwi Putra Cindy Lionita Agusty Desinta Larasati Ashar Dimas Prayoga Djafar, Wihdat Erskine Simei Tonda Faisal Mahmuddin Fernanda Wahyu Pratama Feston Sandi Paribang Ganding Sitepu Ganding Sitepu Guskarim Rompon Hamzah Hamzah Hamzah Hamzah Hariyono Harlian Kustiwangsa Hijriah Hijriah Husein Syahab Irfan Fadillah Jusma Wahidah Lista Putri Adinda Rahmi Luthfi Abdurrahman M. Uswah Pawara Mansyur Hasbullah Misliah Idrus Mohammad Ardha Wiku Wicaksono Muhammad Ichsan Hayatuddin Muhammad Zulkifli Muhammad Zulkifli Musa Lolo Nurul Huda Nurul huda Pria Adi Pengestu Reynadi Firzy Irawan Rizky Risaldo Rodlian Jamal Ikhwani Rosmani Munandar Ryanda Bayu Laksana Sherly Clara Silvia Salsa Putri Suandar Baso Suandar Baso Suardi S Suardi Suardi Taufik Hidayat Taufik Hidayat Widya Yulia Astin Wira Setiawan Wira Setiawan Wira Setiawan Wira Setiawan