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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Simetris Jurnal Rekayasa Mesin Jurnal Pengabdian pada Masyarakat Kepulauan Lahan Kering Journal of Marine-Earth Science and Technology Riset Sains dan Teknologi Kelautan
Yusim, Adi Kurniawan
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Energy Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health Veterinary

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Journal : Journal of Marine-Earth Science and Technology

 1 
DESIGN AND CONSTRUCTION OF A SAVONIUS TYPE L WIND TURBINE PROTOTYPE WITH OPEN VARIATIONS AS AN ELECTRIC ENERGY ALTERNATIVE FOR LIGHTING IN LIFT NET NORTH SEMARANG Naseem, Iqbal; Yusim, Adi Kurniawan; Windyandari, Aulia; Ridwan, Mohd; Mohammad, Luthfansyah
Journal of Marine-Earth Science and Technology Vol. 5 No. 2 (2024): September
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v5i2.1805

Abstract

This study investigates wind speed, wind turbine design to be implemented on fixed lift net in the waters of North Semarang in fishing with the help of lights. The research was carried out by designing and making a prototype of a Savonius type L wind turbine with a blade diameter of 400 mm and a height of 400 mm which was carried out directly on the beach for 10 hours and tested with a blue light to produce fish catches on the fixed lift net. The results of the use of blue lights were obtained from seven types of catfish, anchovies, Rebon fish, Selar fish, Cucut fish, mullet and layur fish with a total catch of 125.16 kg. The results obtained from processing wind turbine data are that the generator power at a wind speed of 1.3 m/s is 0.896 W, the highest power at a speed of 4.9 m/s is 5.214 W and the total generator power for 10 hours is 389.9 W. The energy produced is sufficient to light a 30-W lamp for 12 hours of use which will later be stored in a 12V 38 Ah capacity battery because the battery capacity used is 35.2 Ah with a battery efficiency of 85%.
WELDING QUALITY CONTROL USING THE FAILURE MODES AND EFFECTS ANALYSIS (FMEA) METHOD AT PT. X Jalal, M.Raja Shafa Aulia Jalal; Yusim, Adi Kurniawan
Journal of Marine-Earth Science and Technology Vol. 5 No. 2 (2024): September
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v5i2.1807

Abstract

This research aims to identify and analyze defects in the welding process at PT. X uses the FMEA method. The primary defects found were cracks, porosity, spatter, and undercut. The leading causes of crack defects are poor material conditions, porosity caused by inadequate facilities, spatter due to inappropriate parameter settings, and undercut due to lack of supervision. The highest RPN value is crack, with a score of 288, followed by porosity (280), spatter (196), and undercut (175), indicating that crack and porosity require special attention. Improvement strategies include improving material quality and inspection procedures for cracks, improving facilities for porosity, operator training and automated monitoring for spatter, and increased monitoring for undercuts. Based on the visualization of the Pareto diagram, the number of defects that frequently occurred was spatter in 16 cases with a percentage of 36%, followed by undercut in 11 cases (25%), crack in 9 cases (21%), and porosity in 8 cases (18%). This data was collected from production that experienced defects from January – April 2024. The Pareto diagram shows that spatter is the most frequently occurring defect, even though it has a lower RPN than crack and porosity. Therefore, the repair priority must remain on crack and porosity because of their significant impact on weld quality. Implementing the proposed improvement strategy is expected to reduce the risk of failure and increase the efficiency and quality of the welding process at PT. X.
Co-Authors AGUS PURWANTO Ahsan, Ilyasa Fastabiq Aulia Windyandari Ayuningtyas, Dyah Anggraeni Bambang Sri Waluyo Bihamdiya Assawa, Yara Ashfiya Budi Utomo Budiyono Budiyono Fathurrahman, Hanif Muhammad Hamzah, Putri Marliana Heny Kusumayanti Ida Hayu Dwimawanti Jalal, M.Raja Shafa Aulia Jalal Mohammad Ridwan Mohammad, Luthfansyah Mohd Ridwan Naseem, Iqbal Putra, Lovian Ega Noorcahya Samuel Febriary Khristyson Sanjiwo, Zaneta Zakirena Stacia Reviany Mege Sunarso Sugeng Tampubolon, Mikhael Fernandus Wati Br Purba, Illa Erlinia Windriya, Anafil Windyandari, Aulia Windyandari Yudanto, Yusuf Arya Zulfaidah Ariany