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All Journal IPTEK The Journal of Engineering BERKALA SAINSTEK TELEKONTRAN: Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan SAINTEK: Jurnal ilmiah Sains dan Teknologi Industri Ge-STRAM: Jurnal Perencanaan dan Rekayasa Sipil International Journal of Marine Engineering Innovation and Research Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Jurnal Techno Bahari Jurnal Jalasena
Kristiyono, Tri Agung
Program Studi Teknik Perkapalan, Fakultas Teknik Dan Ilmu Kelautan, Universitas Hang Tuah
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry 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 Mathematics Mechanical Engineering Physics Transportation

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Determination of Standard Time and Man Hours for Welding Process in Barge Repairs Mochammad Falah Adjidinata; Intan Baroroh; Tri Agung Kristiyono; Ali Azhar; Akhmad Basuki Widodo
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

Shipyards are facilities that play an important role in building and repairing ships. One common type of repair is replating, which means replacing damaged hull plates with new ones. This process relies heavily on welding, which needs skilled workers and a lot of electrodes. A frequent issue in the field is the challenge of estimating how many electrodes are needed, which often results in wasted materials, increased costs, and delays in completing the work. This study seeks to calculate the electrode needs, the time required for the work, and the man-hours needed for ship replating. The research involved a review of existing literature and a field study. The welding process used the SMAW method with E6013 electrodes, 160A current, and 2G and 3G welding positions. Each welding position involves three stages: root, filler, and capping. The average welding speed data for every 1000 mm is used to calculate the actual welding length in the replating process. The results showed that the average welding time for the 2G position was 39,277.89 minutes, while for the 3G position it was 17,657.54 minutes. The total electrode requirement was 1,619.69 kg, which is equal to 324 boxes, with an estimated cost of Rp. 40,240,800.00. Additionally, the number of workers needed is 27, with a total of 948.924 man-hours over a period of 5 days. In conclusion, organized calculations of electrode needs, time, and man-hours can help improve the efficiency of replating work, reduce waste, and aid in project management planning in shipyards.
Technical Study of Ship Plate Firing Process Time with Variation of Deformation Values Didik Hardianto; Tri Agung Kristiyono; Bagus Kusuma Aditya; Sinung Widiyanto; Safriudin Rifandi
IPTEK The Journal of Engineering Vol. 10 No. 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

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.
Analysis of the Machining Quality of Liner Plates Using Shaping, Turning, and Milling Methods in Shipbuilding Construction HARI SUSANTO HARI; Tri Agung Kristiyono
Techno Bahari Vol. 12 No. 2 (2025): Oktober
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v12i2.356

Abstract

Liner plate functions as a vibration damping pad between the foundation and heavy equipment such as windlass and main engine in ship construction. Dimensional accuracy and surface roughness are very important for the liner plate to produce optimal contact area. This study compares the quality of liner plate machining results using three methods: shaping, CNC milling, and turning. Evaluation parameters include dimensional precision (thickness), surface roughness (Ra), and production time efficiency. The results show that CNC milling provides the best quality in terms of precision and roughness, although it takes longer to process. The lathe shows balanced results between time efficiency and quality. The scrap machine is suitable for the initial stage of work but is less ideal for precise final results. This study can be a reference in selecting the optimal liner plate machining method in ship construction. Keywords: liner plate; machining; milling; shaping; turning.
Alat Deteksi Persentase Penyusutan Kadar Air Pada Sample Rumput Laut Berbasis Air Fryer Yang Dimodifikasi Safriudin Rifandi; Bagus Kusuma Aditya; Nuhman Nuhman; Muh. Taufiqurrohman; Suryadhi Suryadhi; Joko Subur; Tri Agung Kristiyono; Nurul Rosana; Indra Widyadharma
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 13 No. 1 (2025): TELEKONTRAN vol 13 no 1 April 2025
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v13i1.15640

Abstract

Abstract - Seaweed is one of the biological resources that is very abundant in Indonesian waters. Indonesia's seaweed export products are currently still dominated by seaweed products, reaching 80%. For export needs, the water content of seaweed must reach around 15%. To achieve export standard moisture content, wholesalers or industries usually carry out the seaweed drying process independently. Meanwhile, to avoid losses in exporting dried seaweed, they test seaweed samples to be purchased to determine the percentage of water content reduction in the seaweed. In the testing process, currently we are still using a small oven with a gas-burning stove and a separate digital scale. The use of this device is felt to be less effective and less flexible in its application. Therefore, we need a tool that is integrated into one and is small in size to detect the percentage of water content reduction in seaweed samples. In this research, experimental methods were used in testing equipment and collecting data. The results of the experiment showed that a good temperature to use in drying seaweed samples was 160 OC with the result that the seaweed was dry but not burnt. Meanwhile, the shrinkage percentage is around 34.72%.
Co-Authors Aditya, Bagus Kusuma Akhmad Basuki Widodo Ali Azhar Ali Azhar Ali Azhar Bagas Prabaswara Badrani Bagus Aditya Bagus Kusuma Aditya Bagus Kusuma Aditya Bagus Kusuma Aditya Bellarina, Elsy Putri Didik Hardianto Didik Hardianto Eko Febrianto Tarigan Elsy Putri Bellarina HARI SUSANTO HARI Indra Widyadharma Intan Baroroh Intan Baroroh Joko Subur Lasma, Novi Anggiat Mardhotillah, Zahro Wanda Mochammad Falah Adjidinata Muh. Taufiqurrohman Ndaru Gilang Ramadhan Nuhman Nuhman Nurul Rosana, Nurul Safriudin Rifandi Safriudin Rifandi Sinung Widiyanto Siswo Hadi Sumantri Suryadhi Suryadhi Syahrul Setyo Pambudi