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All Journal REKAYASA International Journal of Marine Engineering Innovation and Research Jurnal Jalasena
Didik Hardianto
Universitas Hang Tuah
Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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ANALISA KEKUATAN KONSTRUKSI RAMP DOOR PADA DECK CARGO BARGE DENGAN METODE ELEMEN HINGGA (FINITE ELEMENT METHOD) Angger Setyo Aji; Didik Hardianto
JURNAL JALASENA Vol 4 No 1 (2022): AGUSTUS 2022
Publisher : Fakultas Sains dan Teknologi Universitas Karimun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51742/jalasena.v4i1.558

Abstract

Ramp door is a construction on a ship that serves to access the entry and exit of vehicles or cargo to be transported by a ship. To ensure that the ramp door can accept the load from these vehicles, a strength analysis of the ramp door construction will be carried out using FEM-based structural static analysis software. From the results of software testing, the maximum stress value occurs on the ramp door model 2 of 166.08 MPa and the minimum stress/stress value occurs on the ramp door model 3 of 117.36 MPa. The safety factor values of the three ramp door models analyzed meet the requirements according to the rules of the Indonesian Classification Bureau, namely the safety factor value for the ramp door model 1 is 2.02, the ramp door model 2 is 1.50 and the ramp door model 3 is 2, 13.
Identifikasi Kekuatan Butt Joint dan Lap Joint pada Pengelasan Konstruksi Kapal Bagiyo Suwasono; Muhammad Farizal; Nur Yanu Nugroho; Didik Hardianto
Rekayasa Vol 16, No 2: Agustus 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i2.19914

Abstract

The joining of steel in ship construction was carried out through welding technology. One of the joining processes used two types of welded joints, namely butt and lap joints. This study identified the strength of the test material from ASTM A36 steel plates at welded joints by standardizing the tensile test. Experimental activities using a tensile testing machine and simulation activities using SolidWorks. The average tensile test values for butt and lap joints show yield strengths of 288.89 and 200 N/mm2, final strengths of 419.11 and 280 N/mm2, reduction of cross-sectional areas of 49.33 and 43.33%, strain 7% and 18.67%, modulus of elasticity 60.81 and 15 N/mm2. Tensile test simulations for butt and lap joints showed plastic deformation in the weld face, root, toe, and HAZ area. Experimental and simulated difference values for butt joints range from 941.67 to 1,519.67 N/m2, and lap joints range from 1,030 to 4,694 N/m2. The final results show that SMAW welding with the butt joint type has a higher strength value than the lap joint.
Risk Analysis of Delay in Ship Repair KM Binaiya with Bayesian Network Method Intan Baroroh; Galuh Valent Setiawan; Ali Azhar; Didik Hardianto; Ahmad Basuki Widodo
International Journal of Marine Engineering Innovation and Research Vol 8, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.18494

Abstract

Ship repair is a project that is short in process so that time is an important element in its completion parameters. Delay is something that can happen to a job. A job experiencing delays must have a cause that affects the work. Causes of delay in the case of ship repair are poor time management, less skilled human resources, the addition or development of work. But whatever the obstacles, shipyards are still required to complete the ship repair process in a timely manner. Seeing this problem, this research was conducted to provide input in connection with the strategies used by PT XYZ in overcoming the delay factor in the repair of the KM Binaiya ship. In the research to support this thesis, the Bayesian Networks Method is used to analyze the factors that cause delays in ship repairs. After risk identification using the Bayesian networks method. The highest risk is replete activities as minor categorized, where the caused tank cleaning work related to hazardous waste, which must be cleaned to be safe for hot work with a risk score of 0.108. The second cause is installation of scaffolding for replete work facilities at height with a risk score of 0.054.
Co-Authors Ahmad Basuki Widodo Ali Azhar Angger Setyo Aji Bagiyo Suwasono Galuh Valent Setiawan Intan Baroroh Muhammad Farizal Nur Yanu Nugroho