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All Journal Journal of Geoscience, Engineering, Environment, and Technology MEKANIKA - JURNAL TEKNIK MESIN International Journal of Research in Vocational Studies (IJRVOCAS)
Ginting, Berta Br.
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Use of DC Motor Control in Development of Pipe Welding Technology by Using the GMAW Process for Variation of Welding Nozzle Movement Toruan, Henry Hasian Lumban; Ginting, Berta Br.; Simanjuntak, Melvin Emil; Pakpahan, Binsar Maruli Tua; Sitorus, M.B.H.; Hutajulu, Elferida; Junaidi
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.227

Abstract

Gas Metal Arc Welding (GMAW) welding technology is a welding method that is widely used in industry. A problem that often occurs is that it is difficult for a welder to control the speed of movement of the welding nozzle, which can affect the quality of the welding results. With welding tools that can control the movement of the welding nozzle, this problem can be overcome and increase the efficiency and productivity of the welding manufacturing process. The method for testing the quality of welding results is analyzed visually using the visual test and penetrant test methods. The use of GMAW welding tools for pipe butt joints using DC motor control to vary the movement of the welding nozzle is effective, making it easier for the welder and good welding results. Good welding results were obtained for setting the welding nozzle movement time in 1.4 seconds and 1 second for one left and right the movement cycle on a pipe joint rotating at a constant speed of 24 rpm. Setting the time for the welding nozzle movement in 0.6 seconds for one cycle of left and right movement produces poor welding in pipe joints that rotate at the same speed.
Rancang Bangun dan Pengujian Pengering Jamur Tiram dengan Satu Kolektor Surya Simanjuntak, Melvin Emil; Sitorus, Melvin B. H.; Manurung, Nelson; Ginting, Berta Br.; Lumbantoruan, Henry H.; Sutrisno, Teng; Kastiawan, I Made; Yulianto, Adam Eko; Rohman, Adi Prasetya
MEKANIKA : Jurnal Teknik Mesin Vol 8 No 2 (2022): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.176 KB) | DOI: 10.30996/jm.v8i2.7285

Abstract

Indonesia merupakan negara tropis yang memiliki iklim yang baik untuk pertanian. Di Indonesia terdapat dua musim yaitu musim panas dan musim hujan. Hasil pertanian tentunya negara yang mayoritas agraris dan memiliki zona iklim tropis Jamur merupakan tumbuhan alami yang tidak mengandung klorofil. Dimana pada alat terjadi dua jenis perpindahan panas yaitu secara radiasi dan konveksi. Perancangan alat dilakukan dengan langkah pertama yaitu membuat kerangka, rangka utama berukuran 1443 x 2379 x 1254 mm dan kolektor berukuran 1014 x 500 x 35 mm, kemudian untuk menyusun kolektor mulai dari ACP, styrofoam, rockwoll, plat absorber, dan ditutup dengan kaca, dan rak penampung yang berukuran 500 x 400 x 35 mm. dimana prinsip kerja mesin yaitu mengalirkan panas yang telah diserap melalui kolektor tepat nya pada plat absorber dan dialirkan kedalam ruang pengering. Berdasarkan hasil pengujian maka disimpulkan bahwa rak ke 4 merupakan rak yang paling cepat panas dengan kadar air yang tersisa 2,94 %, dan rak 1 merupakan rak yang paling lambat panas dengan kadar air yang tersisa 22,87 %.
Design and Performance Evaluation of a 200 Wp Off-Grid Solar Photovoltaic Module for Renewable Energy in Indonesia Sitorus, Nobert; Ginting, Berta Br.; Panjaitan, Berman P.; Simanjuntak, Benrad E.; Naibaho, Penteris R. P.; Matondang, Aprima A.; Simanjuntak, Andrean V. H.
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 3 (2025): JGEET Vol 10 No 03 : September (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.3.24981

Abstract

The rapid growth of global energy demand and the urgent need to reduce greenhouse gas emissions have accelerated the transition toward renewable energy technologies, with solar photovoltaic (PV) systems playing a central role. In Indonesia, high solar irradiation provides significant potential for PV adoption, yet challenges remain in human resource capacity and technical readiness, particularly in rural areas where off-grid systems are critical. This study presents the design, development, and testing of a 200 Wp off-grid PV training module aimed at bridging the gap between theoretical knowledge and practical skills in renewable energy education. The module integrates two 100 Wp PV panels, a 100 Ah lithium-ion battery, an MPPT charge controller, and a 500 W pure sine wave inverter, all mounted on a modular acrylic platform to enable repeated assembly and disassembly for training purposes. Experimental testing under tropical conditions demonstrated stable PV output (Voc 19.8–21.5 V, Isc 4.8–5.4 A), efficient battery charging within 8 hours to full capacity, and reliable discharging performance sustaining DC loads for 18 hours and AC loads for 12–14 hours. Inverter efficiency averaged 92%, with minimal waveform distortion under typical loads. These results confirm the module’s reliability and educational value, offering a robust platform for vocational training and community-based capacity building. The study contributes to Indonesia’s renewable energy transition and supports Sustainable Development Goal 7 by enhancing technical education and workforce readiness for solar PV deployment.
Co-Authors Berman Panjaitan Henry Toruan - Hutajulu, Elferida I Made Kastiawan, I Made Junaidi Junaidi Lumbantoruan, Henry H. Matondang, Aprima A. Melvin Bismark Hamonangan Sitorus - Melvin Emil Simanjuntak - Naibaho, Penteris R. P. Nelson Manurung, Nelson Pakpahan, Binsar Maruli Tua Rohman, Adi Prasetya Simanjuntak, Andrean V. H. Simanjuntak, Benrad E. Sitorus, M.B.H. Sitorus, Nobert Teng Sutrisno Yulianto, Adam Eko