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Assessment of debonding failures in the sandwich plate of stern ramp door of ferry Ro-Ro using k-nearest neighbor algorithm

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AIP Conference Proceedings 2023年第1期2674卷

作者： Safri Adam Tuswan Tuswan Abdi Ismail Achmad Zubaydi Bambang Piscesa Aditya Rio Prabowo Information Technology Study Program Politeknik Aisyiyah Pontianak 78114 Pontianak Indonesia Department of Naval Architecture Institut Teknologi Sepuluh Nopember 60111 Surabaya Indonesia Department of Naval Architecture Universitas Diponegoro Semarang Indonesia Ship Machinery Study Program Faculty of Vocational Studies Indonesia Defense University Belu Indonesia Department of Civil Engineering Institut Teknologi Sepuluh Nopember 60111 Surabaya Indonesia Department of Mechanical Engineering Universitas Sebelas Maret Indonesia Surakarta Indonesia

The difficulty in controlling the proper bonding during manufacturing sandwich for ship structure is a major problem. One of the damage types that often occurs is debonding caused by the lack of the adhesive layer bond between the two faceplate materials and the sandwich core at the centre. Furthermore, the identification of damage in ship structure becomes essential to ensure the structural integrity and security issues. Based on the issues above, damage identification on the sandwich plate of Ferry Ro-Ro with several debonding ratios using the k-NN algorithm was proposed. The cross-validation method was used to check the validity of the proposed algorithm model in practice. The proposed models were analyzed with various k-fold values, k-NN values, and number of iterations to investigate the influence of the those parameters on the accuracy of the model. From the result, it can be found that increasing k-fold value is the best strategy to increase the accuracy of the model. However, increase number of neighbors (k) caused a bias so that the accuracy decreased. The tests resulted in the highest accuracy of 97.60% obtained at k-fold 11 with k=3 and 90 iterations. It can be summarized that the large number of k-folds and small k-NN parameters do not require large iterations to obtain high prediction results.

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Design of Fishing Boat for Pelabuhanratu Fishermen as One of Effort to Increase Production of Capture Fisheries 2

Design of Fishing Boat for Pelabuhanratu Fishermen as One of...

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2nd International Conference on Nuclear Energy Technologies and Sciences (ICoNETS)

作者： Nur, Iswadi Suranto, Purwo Joko UPN Vet Study Program Naval Architecture Engn Fac Jakarta Indonesia

Design of fishing boat for Pelabuhanratu fishery ran as one of effort to increase production of capture fisheries. The fishing boat should be proper for the characteristic of its service area, as;capacity of fishing boat up to 60 GT, the fishing boat has minimum 6 fish holds and location of fish hold in the middle body, the fishing boat hull has the bilge keel plate, and the material of hull fishing boat to be made of wooden, steel, aluminium, or fiberglass. Main dimesion of fishing boat is Length Over All = 25.436 m, Breadth = 4.55 m, Draft = 1.6 m, Speed = 12.5 knots. The research had been known every thing that will be supporting the production of capture fisheries like;amount of fish production = 25.030 ton per day, the fishing port capacity approximately 268.957GT per day, the area of fishing port < 30 hectares, the zone of fish processing industry had not completed, therefore all data research result less than standard of Oceanic Fising Port. So Pelabuhanratu National Fishing Port can not be changed to Oceanic Fishing Port.

关键词： fishing boat national fishing port oceanic fishing port

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study of Utilization Plastic Waste as Basic Material for Boat Manufacturing Using Eco-green Design Concept

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IOP Conference Series: Materials Science and Engineering 2021年第1期1125卷

作者： S Noverdo N Iswadi R Reda S Bambang P. Muayyad Studi Program Naval Architecture Faculty of Engineering Universitas Pembangunan Nasional Veteran Jakarta Indonesia Study Program Industrial Engineering Faculty of Engineering Universitas Pembangunan Nasional Veteran Jakarta Indonesia Naval Architecture & Ship Builder-PT Venta Technology Industri Jakarta Indonesia

The plastic waste problem has become a global problem and the effect on the environment is horrible. Almost all countries make an effort to reduce their daily utilization. Environmental organizations and researchers are also performing research to find ways to recycle plastic waste. In this paper introduces the 'Eco-green Design Concept' to utilize plastic waste (type 2) as fishing boat material. This concept will recycle 3 tonnes of plastic waste into the material of a fishing boat. In addition, the implementation element of eco-green design concept (design quality (D), Environmental Friendly (E), Eco-green Material (G)) into the design of fishing vessels has been successful. The concept does not only utilize type 2 plastic waste into the hull of the ship, but the design of the ship is made to have small resistance, good stability and has a large cargo area. And also has a machine that is environmentally friendly and does not cause pollution.

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Solar Energy for a Traditional Coastal Fishing Platform

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Journal of Marine Science and Application 2019年第3期18卷 366-371页

作者： Sunaryo Aldy Syahrihaddin Pradhana Shadu Imfianto Indonesian Maritime Center Universitas IndonesiaDepok 16424Indonesia Naval Architecture and Marine Engineering Study Program Universitas IndonesiaDepok 16424Indonesia

In order to introduce clean environment and sustainable energy to traditional coastal fishing community, the objective of this study is to encourage the Indonesian traditional coastal fishing community to use green and renewable energy in their fishing activities. Introducing solar power as the main source of energy for fish-attracting lights and boat propulsion can reduce the use of fossil fuels, and sustain clean and healthy environment. As the world’s largest archipelago, Indonesia accounts for a high percentage of traditional fishing communities spread out along its islands. This fishing communities use various traditional fishing boats, and platforms. The fishing platforms are usually made of bamboo and placed on top of supporting structures on the seabed. Diesel electric generators are used to obtain electricity needed for lighting to attract the fish at night, and as the source of power for lifting the fishing net. The structure and fuel used are neither environmentally friendly nor clean;thus, an innovation is introduced. Traditional fishing practices using a fishing platform were studied, including the common size of the platform and the power needed for the fishing light. Based on the gathered information, this study proposes a catamaran vessel with a special top structure designed for fish lifting outfitting, and equipped with photovoltaic solar cells as the energy source for the fishing lights and vessel propulsion. Through this innovative break through, the vessel can be moved to the shore and will not be a threat to ship navigation and the environment. Furthemore, powered by clean and sustainable energy, the vessel can be directed to the best fishing ground.

关键词： Catamaran Fishing lights Fishing platform Lifting net Photovoltaic panel Solar energy

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Electrical system design of solar powered electrical recreational boat for Indonesian waters 3

Electrical system design of solar powered electrical recreat...

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3rd International Tropical Renewable Energy Conference on Sustainable Development of Tropical Renewable Energy (i-TREC)

作者： Sunaryo, Sunaryo Ramadhani, Adri Wirawan Univ Indonesia Dept Mech Engn Naval Architecture & Marine Engn Study Program Depok 16424 Indonesia

Indonesia has more than 17,000 islands and has plenty of beautiful beaches and underwater spots which have great potential for maritime tourism. Tourism was ranked 3rd on Indonesia's foreign income and plays an important role for the country's ecomony. Despite having potential advantages, the government has not yet maximized its efforts to develop the attractiveness of its maritime tourism. Beside the beautiful spots Indonesia is also blessed with all year long sun shine, which could be tapped as renewable and green energy as substitution to fossil fuel. Refer to these great advantages of natural resources the research was aimed to support the government's program in developing its maritime tourism and to promote the use of green and renewable energy by designing a solar-powered tourism recreational boat which has 12 meters of length. The paper is focused on the design of solar energy and its electrical system, which includes conversion of solar energy to electrical energy and store it in the battery, the required electrical power is also predicted based on the appliances and equipment installed in the boat, the optimum attachment of solar panels on the boat structure is also calculated. All the methods and information we use are obtained from literature study, discussion with experts, and surveys to Jagur as solar-powered electric boat from Universitas Indonesia.

关键词： Solar energy

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Hull Design of Solar Powered Recreational Electric Boat for Indonesian Waters 3

Hull Design of Solar Powered Recreational Electric Boat for ...

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3rd International Tropical Renewable Energy Conference on Sustainable Development of Tropical Renewable Energy (i-TREC)

作者： Sunaryo, Sunaryo Yusro, Fahmi Univ Indonesia Mech Engn Dept Naval Architecture & Marine Engn Study Program Depok 16424 Indonesia

Indonesia with its more than 17,000 islands and its geographical location as tropical country is blessed with many marine tourism destinations such as beautiful beaches and coral reefs, coastal community culture etc., in fact tourism is ranked as 3rd highest foreign income. On the other hand Indonesian government is also committed to promote the use of environmentally friendly new and renewable energy as an alternative to the fossil fuel which highly contribute to the air pollution. In conjunction with government's program in developing the marine tourism and in using green energy, the research is aimed to design solar powered recreational boat for tourism in Indonesia. The paper is focused on the design of the boat structure such as the hull type, the environmental friendly material for the boat hull, the arrangement of the boat that would suitable to be powered with solar energy etc. For this purpose references are obtained from literature study, experts' opinion, and previous experiments.

关键词： Fossil fuels

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Design and calculation of mechanical system for solar-powered electric boat 2

Design and calculation of mechanical system for solar-powere...

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2nd International Tropical Renewable Energy Conference (I-TREC)

作者： Sunaryo Nurachman, Dendi Imfianto, Pradhana S. Univ Indonesia Depok Dept Mech Engn Naval Architecture & Marine Engn Study Program Depok 16424 Indonesia

Indonesian government has a flagship program that is to promote the nation through the maritime sector and make Indonesia as Global Maritime Fulcrum. To achieve that, sea transportation is very important for the development of Indonesia. But sea transportation is also the highest contributor to the air pollution and global warming. In order to reduce the source of global warming Indonesian Government has a strategic plan to gradually replace the use of fossil energy with renewable energy. One of the renewable energy that can be used effectively in Indonesia is solar energy, because Indonesia located along the equator and has a high intensity of sunlight that means it has excellent solar energy availability. In attempt to contribute to the Government's energy strategic plan, the research is aimed to design a solar-powered electric boat with single pilot. The project is a further development of the solar boat created by the Universitas Indonesia team that participated in the International Solar-boat Challenge competition in the Netherlands. The paper is focused on the design and calculation of its mechanical system. The system is divided into propulsion system, steering system, and bilge pump system. The research is conducted based on literature study, discussion with experts, and surveys to the solar-powered electric boat had been designed previously for the race. Collected data are then used as input for the calculation and simulation of the vessel being designed. It is expected that the study could optimize the mechanical system of the solar-powered electric boat, and can be developed for recreational use in Indonesian waters.

关键词： Global warming

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Propulsion System Analysis For Solar-Powered Electric Water Recreational 3

Propulsion System Analysis For Solar-Powered Electric Water ...

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3rd International Tropical Renewable Energy Conference on Sustainable Development of Tropical Renewable Energy (i-TREC)

作者： Sunaryo Nurachman, Dendi Univ Indonesia Dept Mech Engn Naval Architecture & Marine Engn Study Program Temple Depok 16424 Indonesia

Indonesia is the world's largest archipelago with more than 17,000 islands, and also the best marine tourism destination, there are many beautiful beaches and underwater spots throughout the country. Due to this potential condition Indonesian government is planning to improve its maritime tourism sector. To realize this boats play very important role both for transport as well as for recreational purposes. On the other hand the government is also committed to reduce the global warming from the use of fossil fuel especially in industry and transportation through the Presidential Regulation no. 61/2011, with the strategy for replacing the fossil fuel with renewable energy. To support the government's program the research is aimed to design solar -powered electric recreation boat for tourism, with the consideration that there is almost non-stop sun shine available all year long in Indonesia. The boat has length of 12 meters. In this paper the focus is on the analysis of the propulsion system of the boat, which consists of the calculation the power needed to run the electric motor, the optimum propeller design, and the steering system.

关键词： Boats

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Development of an Automatic Anti Pitching System (APS) Autonomous Surface Vehicle (ASV) for Fish Mapping

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Journal of Physics: Conference Series 2020年第3期1569卷

作者： Noverdo Saputra Muhammad Arifudin Lukmana Purwo Joko Suranto Study Program Naval Architecture Universitas Pembangunan Nasional Veteran Jakarta Indonesia Study Program Mechanical Engineering Universitas Pembangunan Nasional Veteran Jakarta Indonesia

The common problem occurs in fish mapping using autonomous surface vehicles (ASV) is pitching stability. Some researchers have indicated that problem affects the results of mapping. The target of this system is to design an Autonomous Pitching System (APS) for ASV using numerical simulation software. The simulation is done by implement APS into the system, producing an oscillatory motion from the ASV. For both dynamics of craft in short and long periods, APS with proportional controller (P), proportional-integral controller (PI), and proportional-integral-derivative controller (PID) are developed in order to minimize the oscillatory behaviour. It was found that for the short period dynamics, the APS with PI controller was the optimal controller, followed by the PID controller and then the P controller. For the long period dynamics, the APS with PID controller was optimal.

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Safety Risks Assessment on Container Terminal Using Hazard Identification and Risk Assessment and Fault Tree Analysis Methods 10th

Safety Risks Assessment on Container Terminal Using Hazard I...

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10th International Conference on Marine Technology (MARTEC)

作者： Sunaryo Hamka, Mochamad Aditya Univ Indonesia Naval Architecture Study Program Kampus UI Depok 16424 Indonesia

Loading and unloading of containers from ship to the quay at the container terminal is a high risk activity that has high potential of creating accidents both to human as well as to property. The study is aimed to conduct safety assessment that can be used further for minimising work accidents at the port. Hazard Identification and Risk Assessment (HIRA) method is used to identify the type, cause, and effect of the potential risks based on the activity sequences. A risk matrix is arranged for obtaining the risk level. Root cause of the highest risk activity is investigated using Fault Tree Analysis (FTA) method. 5 potential risks are identified i.e. worker slips, trips or falls;truck struck by quay crane, worker struck by truck, worker struck by falling hatch cover or container, and worker trapped between containers. The root causes of potential accidents are human fault, equipment maintenance, and environment. (C) 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the organizing committee of the 10th International Conference on Marine Technology.

关键词： Container terminal Loading unloading Risks assessment Safety

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