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STUDI ESTIMASI BIAYA PEMOTONGAN PELAT SECARA MANUAL BERDASARKAN WAKTU PROSES DAN KONSUMSI GAS POTONG PADA GALANGAN KAPAL Bagus Kusuma Aditya; Tri Agung Kristiyono
JURNAL JALASENA Vol 3 No 2 (2022): FEBRUARI 2022
Publisher : Fakultas Sains dan Teknologi Universitas Karimun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51742/jalasena.v3i2.533

Abstract

One of the dominant activities in the production process in shipyards is plate cutting. So that in this process, the cost of the cutting process will also have a large enough share. In the shipyard, manual cutting is still often encountered because the position and location of the plate cutting varies, although technologically there are automatic cutting machines which tend to be tied to the cutting location. In the Oxy-Lpg plate cutting study that has been carried out, the regression results are obtained, with the time equation Y = 33.826X – 0.9026, the Lpg consumption equation Y= 0.057 + 0.017X and the Oxygen consumption equation Y= -0.415 + 0.127X. based on the existing equation, the cost analysis of the cutting process obtained the cost of cutting the 6 mm plate IDR. 13,400 rupiah, the 8 mm plate IDR. 20,000 rupiah, 10 mm plate IDR 26,700 rupiah, 12 mm plate IDR 33,325 rupiah and 14 mm plate IDR 40,000 rupiah with a cutting length 100 cm
STUDI PENGARUH VARIASI JARAK NOZZLE TIP TERHADAP KEBUTUHAN GAS OXY-LPG DAN DURASI PADA PEKERJAAN PEMOTONGAN PELAT BADAN KAPAL SECARA MANUAL Syahrul Setyo Pambudi; Tri Agung Kristiyono; Bagus Kusuma Aditya
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.v4i1.605

Abstract

The process of manually cutting plates with oxy-LPG gas is still widely used in shipyards and ship sub-contractors in Indonesia, both in the production of new building ships and repairs. In the cutting process, one of the factors that can affect the quality of cutting is the use of a tip nozzle distance. In the shipping industry, it is often found that the use of the tip nozzle distance in the process of manually cutting plates varies. The purpose of this study was to determine the effect of the nozzle tip distance on the need for oxy – LPG gas and the duration of cutting. This research method was carried out using the experimental method of cutting plates. Based on the results of data analysis, it is known that the higher the use of the nozzle tip distance, the need for oxy-LPG gas will increase while the cutting duration is not. The linear regression equation obtained between the distance of the tip nozzle and the oxygen requirement is Y = 0.0171X + 0.5357 and the tip nozzle distance with the LPG needs is Y = 0.0071X + 0.06, and the polynomial order 2 non-linear regression equation obtained between the tip nozzle distance and the cutting duration is Y = 0.9895X2 – 19.312X + 310.09 and the optimal distance of the tip nozzle is obtained at a distance of 9.758 mm with a cutting duration of 215.862 seconds.
Technical Study of Ship Plate Firing Process Time with Variation of Deformation Values Sinung Widiyanto; Didik Hardianto; Tri Agung Kristiyono; Bagus Kusuma Aditya; Safriudin Rifandi
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.
PERANCANGAN DERMAGA TAMBAT UNTUK PERAHU NELAYAN PERMUKIMAN SUNGAI Frengki Mohamad Felayati; Bagus Kusuma Aditya; Safriudin Rifandi; Gde A. Prabhawatya Poundra; Sinung Widiyanto
Jurnal Pengabdian Masyarakat Pesisir VOLUME 3 NOMOR 2
Publisher : Universitas Hang Tuah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jpmp.v3i2.114

Abstract

Nelayan yang tinggal di Keputih Tegal Timur Baru, Surabaya, memulai aktivitas mereka dengan menyiapkan perahu di tepi sungai dekat permukiman. Kegiatan ini membuat dermaga sungai menjadi vital untuk persiapan melaut. Sayangnya, dermaga konvensional yang terbuat dari bambu sering kali tidak memadai dan berisiko, seperti permukaan yang licin dan konstruksi yang kurang kuat. Oleh karena itu, diperlukan dermaga yang lebih layak dan aman untuk meningkatkan produktivitas nelayan. Pengabdian masyarakat ini bertujuan untuk merancang dermaga tambat yang sesuai dengan kebutuhan nelayan di daerah tersebut. Kegiatan dimulai dengan Focus Group Discussion (FGD) untuk mengidentifikasi permasalahan yang ada, dilanjutkan dengan survei lapangan untuk mengumpulkan data teknis. Berdasarkan hasil FGD dan survei, tim merancang dermaga yang dilengkapi dengan fasilitas pendukung seperti gudang penyimpanan alat tangkap, area bongkar muat, dan penerangan. Desain ini kemudian divalidasi dan disetujui oleh masyarakat nelayan. Hasil akhir dari kegiatan ini adalah desain dan perencanaan pembangunan dermaga yang dapat digunakan untuk mendukung aktivitas produktif nelayan sehari-hari, sehingga meningkatkan kesejahteraan mereka.