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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Patria Artha Technological Journal Jurnal Teknologi Terapan Jurnal Pendidikan dan Konseling Jurnal Ilmiah Teknik Mesin "MEKANIK" Sprocket : Journal of Mechanical Engineering Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Teknomekanik Journal of Innovation and Technology Jurnal PkM (Pengabdian kepada Masyarakat) International Journal of Research in Vocational Studies (IJRVOCAS) INCOME: Indonesian Journal of Community Service and Engagement IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) E-CLUE Journal of English Culture, Language, Literature and Education Jurnal Polimesin
Pakpahan, Binsar Maruli Tua
Medan State University
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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.
Simulation Study of Small-Scale Electricity Generation Plant Utilizing Flue Gas of Solid Garbage Waste Incineration as Energy Source Simanjuntak, Janter Pangaduan; Pakpahan, Binsar Maruli Tua
Jurnal Inovasi Teknologi Vol 4 No 2 (2023): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to get an overview of the operational parameters of a small-scale electrical generation plant that utilizes thermal energy included in the flue gases of garbage waste incineration. The organic Rankine cycle (ORC) thermodynamic system was performed to evaluate this system. The organic fluid was used as a heat transfer medium instead of water because it has a low boiling point so it does not require a lot of thermal energy to generate small-scale electric power. Hexane was used as the working fluid and Aspen Hysys was used as a tool to perform simulations. The plant is optimized through the operating temperature, working fluid flow rate, and pressure to obtain electrical output power that can be obtained. The simulation results show that flue gas at a temperature range of 300 to 350 0C can produce electric power in the ranges of 7.84 to 128.6 kW at a working pressure ranges of 2.5 to 7.5 bar, and working fluid flow rate of 3.600 to 10.100 kg/h
How Does Problem Based Learning Work on Students' Writing Ability? (CAR Study) Binsar Maruli Tua Pakpahan; Noor Aziz; Ni Putu Juliani Lestari Dewi; Devin Mahendika
Journal of English Culture, Language, Literature and Education Vol. 11 No. 1 (2023): E-CLUE: Journal of English Culture, Language, Literature, and Education
Publisher : English Education Department

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/eclue.v11i1.5880

Abstract

The problem-based learning method is one of the methods that can be applied in EFL classes, especially for students' writing skills, so that it can create a pleasant learning atmosphere and make learning more active in classroom learning activities. The problem-based learning model is one of the learning models that can shape scientific behavior, social actors, and develop students' curiosity. Learners are initially faced with a problem, then followed by a student centered information search process. Seeing the importance of this method, this study aims to see the extent to which the PBL method can improve students' ability to write Narrative text. With Classroom Action Research design, this study was applied to 20 students of class X. In collecting data, tests were used to obtain an overview of student achievement, each of which was given in each cycle. The results of this study show that PBL can improve students' narrative text writing skills, this can be seen from the percentage of student results in each cycle. In addition to making the classroom atmosphere active and participatory, PBL also makes students think more critically in solving their problems. Students are required to be able to solve their problems both individually and in groups. Seeing the important role of this PBL method, the results of this study can be used as starting points or corrections for further research
Pengaruh Elektroplating Ni-Cr terhadap Wetability dan Ketahanan Korosi Sumuran pada Baja Tahan Karat 316L dalam Media Infus 0,9% NaCl Pakpahan, Binsar Maruli Tua; Pasaribu, Muhammad Nuh Hudawi; Simatupang, Lisnawaty; Silaban, Robert; Pakpahan, Natal Toga Hot Tua; Sihombing, Prada; Sinaga, Sabas DK
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.197

Abstract

This study aims to evaluate the effect of Ni-Cr electroplating on wettability characteristics and pitting corrosion resistance of 316L stainless steel in 0.9% NaCl infusion media. The electroplating process consisted of a nickel base coating for 15 minutes, followed by chromium plating with durations ranging from 10 to 22.5 minutes. Contact angle measurements showed that Ni-Cr coating increased the contact angle from 71.25° to 86.77°, indicating a surface transformation from hydrophilic to more hydrophobic. This increase in contact angle demonstrates the effectiveness of Ni-Cr plating in enhancing the material’s resistance to liquid penetration, a critical property for biomedical applications. Corrosion tests revealed a reduction in pit count and depth after plating, suggesting a significant improvement in resistance to localised corrosion. These findings indicate that Ni-Cr electroplating significantly improves pitting corrosion resistance. This technique can be implemented to enhance the durability of 316L-based implant materials in corrosive body environments, particularly in applications where long-term biocompatibility and surface stability are essential.
Inovasi Pakan Alami dan Teknologi Pemeliharaan Modern untuk Meningkatkan Pendapatan Kelompok Budidaya Ikan di Desa Baru, Batang Kuis Pakpahan, Binsar Maruli Tua; Lubis, Shofia; Silaban, Robert; Siregar, Riski Elpari
INCOME: Indonesian Journal of Community Service and Engagement Vol 4 No 3 (2025)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/income.v4i3.1705

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pendapatan kelompok budidaya ikan melalui penerapan inovasi pakan alami dan teknologi pemeliharaan modern. Permasalahan utama mitra adalah tingginya biaya pakan ikan yang mencapai 60–70% dari total biaya produksi, serta keterbatasan dalam penerapan teknologi tepat guna. Metode pelaksanaan meliputi sosialisasi, pelatihan pembuatan pakan alami berbasis maggot, desain dan fabrikasi mesin pencacah serta mesin pelet, serta pendampingan penggunaan teknologi pemeliharaan modern. Hasil kegiatan menunjukkan peningkatan pengetahuan dan keterampilan kelompok mitra dalam produksi pakan alami, peningkatan efisiensi biaya pakan, serta kemandirian dalam pemeliharaan ikan. Program ini memberikan dampak positif berupa penguatan kapasitas kelompok budidaya, peningkatan produktivitas, dan potensi peningkatan pendapatan. Keberhasilan kegiatan ini menunjukkan bahwa penerapan teknologi tepat guna dan inovasi pakan alami merupakan strategi efektif dalam pemberdayaan ekonomi masyarakat berbasis perikanan.
Effectiveness Test of Learning Devices in the Computer-Aided Manufacturing (CAM) Course Silaban, Robert; Pakpahan, Binsar Maruli Tua; Rahmi, Ana; Efendi, Hidir
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.11223

Abstract

The aim of this research is to develop learning devices, including the syllabus, Semester Learning Plan (RPS), teaching materials, and assessments for the Computer Aided Manufacturing (CAM) course, whose suitability has been tested. The needs analysis is related to the transition from the Competency-Based Curriculum to the Indonesian National Qualifications Framework (KKNI) curriculum, which requires various adjustments. For instance, assessments in the Competency-Based Curriculum consist of four (4) components, while the KKNI curriculum includes six (6) components, with cognitive assessment contributing the most. In its implementation, the Competency-Based Curriculum uses learning devices aligned with its structure. With the adoption of the KKNI curriculum, it is deemed necessary to develop learning devices that support its implementation. This research employs the 4-D model as the basis for the development procedure. The results of the first stage, based on expert evaluations, indicate that the Semester Learning Plan and CAM teaching materials meet the criteria for being highly suitable as learning devices for the CAM course. Additionally, student evaluations confirm that the Semester Learning Plan and CAM teaching materials are appropriate for use as learning devices. The effectiveness test results show a significant increase in post-test scores compared to pre-test scores. Furthermore, the t-test analysis confirms a statistically significant difference between the average post-test and pre-test scores
Enhancement of surface hardness and roughness of HQ 805 steel using diamond-like carbon coating deposited by PVD Pakpahan, Binsar Maruli Tua; Yaqin, Rizqi Ilmal; Waluyo, Bakti Dwi; Zulfikram, Zulfikram; Mendoza, Muhammad Dominique
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6166

Abstract

Diamond-Like Carbon (DLC) coatings are well-regarded for their high hardness, low friction coefficient, and excellent wear resistance, making them suitable for enhancing surface properties in demanding industrial applications. This study aims to analyze the effect of DLC coating on HQ 805 steel, focusing on improvements in surface hardness and surface roughness. HQ 805 steel, which is known for its mechanical durability, was coated using the Physical Vapor Deposition (PVD) method to achieve a uniform and adherent thin film. Hardness was evaluated using the Vickers microhardness test, while surface roughness was measured with a profilometer. Results showed a significant increase in surface hardness, with the coated samples achieving up to 798 VHN. It represented a 25–30% increase compared to the uncoated steel at 355 VHN. Surface roughness exhibited only a slight increase (5–7% Ra), indicating the thin layer and uniform deposition achieved with DLC without adversely affecting the surface finish. These results confirm that PVD-applied DLC coatings can effectively enhance the mechanical surface performance of HQ 805 steel without compromising surface quality. The optimal coating condition was found at 400°C for 4 hours. This research shows the potential application of DLC-coated HQ 805 steel in high-wear industrial environments extending component service life and improving operational efficiency.
Process design and simulation study of an electricity generation plant utilizing low-grade wasted thermal energy using aspen Hysys software Simanjuntak, Janter Pangaduan; Pakpahan, Binsar Maruli Tua; Purwantono, Purwantono; Al-attab, Khaled Ali
Teknomekanik Vol. 6 No. 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.539 KB) | DOI: 10.24036/teknomekanik.v6i1.23872

Abstract

An analysis of the operational parameters of a small-scale electrical generation facility that uses the thermal energy contained in the flue gases from rubbish waste incineration is the goal of this study. To assess this system, the organic Rankine cycle (ORC) thermodynamic system was used. Since the organic fluid has a lower boiling point than water and can be evaporated with less thermal energy, it was chosen as a heat transfer medium instead of water. Aspen Hysys was utilized as a simulation tool, while R11 was used as the working fluid. To maximize the amount of available electrical output power, the plant's operational temperature, working fluid flow rate, and pressure are all maximized. According to the simulation's findings, flue gas may generate electric power between the ranges of 3.12 – 29.71 kW at working pressures between 2.5 and 3.5 bar and working fluid flow rates between 3.600 and 7200 kg/h when the temperature is between 50 and 95 oC. The system reaches a thermal efficiency of about 8.30 at 350 kPa of working fluid pressure.
Co-Authors Abdul Hasan Agus N Putra Al-attab, Khaled Ali Ana Rahmi Bakti Dwi Waluyo Bambang Tjiroso Devin Mahendika Efendi, Hidir Erma Yulia Eswanto, Eswanto Ginting, Berta Br. Gunawan, Safri Hanapi Hasan Hasrul Saleh HENRY ISKANDAR Henry Toruan - Hutajulu, Elferida I Ketut Suada Januariyansah, Sapitri Junaidi Junaidi Keysar Panjaitan Manullang, Robert Melvin Emil Simanjuntak - Mendoza, Muhammad Dominique Ni Putu Juliani Lestari Dewi Noor Aziz Pakpahan, Natal Toga Hot Tua Pasaribu, Muhammad Nuh Hudawi Pristiansyah, Pristiansyah Purwantono, Purwantono Riski Elpari Siregar, Riski Elpari Rizqi Ilmal Yaqin Rizqi ilmal yaqin, Rizqi ilmal Robert Manullang Robert Silaban Saut Purba Saut Purba Shofia Lubis, Shofia Sihombing, Prada Simanjuntak, Janter Pangaduan Simatupang, Lisnawaty Sinaga, Sabas DK Sitorus, M.B.H. Zulfikram, Zulfikram