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All Journal Jurnal Jalasena WAVE: Jurnal Ilmiah Teknologi Maritim
Kharis Abdullah
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Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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PENJADWALAN REPARASI TUG BOAT MENGGUNAKAN METODE CPM DAN PDM Mochammad Ikhsan Nudin; Kharis Abdullah
JURNAL JALASENA Vol 5 No 1 (2023): AGUSTUS 2023
Publisher : Fakultas Sains dan Teknologi Universitas Karimun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51742/jalasena.v5i1.1070

Abstract

At this time the shipyard industry is growing more rapidly which makes the owners of the company compete to be better and faster, especially in the field of repair, especially the type of tug boat. The existence of tug boats is quite a lot in Indonesia because it can operate in various fields, so the frequency of docking in shipyards is often found. Project management in the field of repair scheduling is prioritized in order to accelerate the duration of ship repairs. In the scheduling process, the CPM (Critical Path Method) method and the PDM (Precedence Diagram Method) method which are project management methods are widely used to determine the critical path so that acceleration can be carried out in a project work. With this method, the total duration of the tug boat repair work is obtained for 18 days.
Strength Analysis of 230 Feet Coal Barge Deck Using Finite Element Method Prastiawan, Achmad Hanif; Kharis Abdullah
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 19 No. 2 (2025)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2025.11983

Abstract

Coal barges are one of the vital transportation in the coal mining industry to transport large loads by sea or river. The durability of the deck structure is a crucial aspect in ensuring operational safety and efficiency. This study will analyze the strength of a 230-foot coal barge deck using the Finite Element Method (FEM) with different plate thickness variations. The analysis was carried out by modeling the deck structure in Autodesk Autocad software and simulating it in Ansys Workbench software. The purpose of this study was to evaluate the distribution of maximum stress and safety factor at maximum loading conditions. From the analysis results, it was found that the deck cargo model A with a plate thickness of 10 mm had a maximum stress of 175.65 Mpa and a safety factor value of 1.22. While the deck cargo model B with a plate thickness according to the Ultrasonic Test results had a maximum stress of 181.71 Mpa and a safety factor value of 1.18. So the results of the maximum stress and safety factor values ​​of the two models still meet the permissible stress of the material and the safety factor value with the BKI standard.
Co-Authors Mochammad Ikhsan Nudin Prastiawan, Achmad Hanif