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All Journal IPTEK The Journal of Engineering
Widiyanto, Sinung
Universitas Hang Tuah
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Mechanical Engineering

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Hydrodynamic Force Comparison on Multi-Hull, Monohull and Single-to-Twin After Ship Hull (STASH) Based on Seakeeping Criteria Poundra, Gde A Prabhawatya; Aditya, Bagus Kusuma; Widiyanto, Sinung
IPTEK The Journal of Engineering Vol 10, No 3 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v10i3.a21144

Abstract

An investigation into the hydrodynamic force and seakeeping of single-to-twin after ship hull (STASH) and multi-hull geometry was done successfully. STASH is characterized by its monohull-shaped design in the fore part and twin hull in the rear part creating unique performance, especially seakeeping which being the focus study to provide seaworthiness. The method of accomplishing this study was through computer simulation using Maxsurf: Motion for seakeeping and hydrodynamic force analysis. The overall results were compared with published data and mathematical models for validation purposes. The results are believed to be useful for the development of the ship design and performance.
Technical Study of Ship Plate Firing Process Time with Variation of Deformation Values Widiyanto, Sinung; Hardianto, Didik; Kristiyono, Tri Agung; Aditya, Bagus Kusuma; Rifandi, Safriudin
IPTEK The Journal of Engineering Vol 10, No 1 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v10i1.a18594

Abstract

In the process of shipbuilding production and repair, deformation is sometimes encountered due to several factors, starting from load pressure, pulling, lifting, and welding processes. A fairing process is carried out to overcome the plate deformation, in which the plate is heated and cooled simultaneously. The method used in this research is direct time measurement during the fairing process on test plate specimens with variations in the depth of deformation curvature. The data obtained, processed, and analyzed to obtain an estimate of the fairing processing time the longer the fairing process takes, following the equation Y = 41.285X + 530.94, where X is the deformation angle, and Y is the estimation fairing processing time area per half square meter.
Co-Authors Aditya, Bagus Kusuma Gde A. Prabhawatya Poundra Hardianto, Didik Kristiyono, Tri Agung Rifandi, Safriudin