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All Journal JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Rekayasa Mesin Jurnal Rekayasa Material, Manufaktur & Energi Hasil Pengabdian Kepada Masyarakat JMM (Jurnal Masyarakat Mandiri) Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Madani dan Lestari (JAMALI) Jurnal MESIL (Mesin Elektro Sipil) Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI) Sisfo: Jurnal Ilmiah Sistem Informasi IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) IRA Jurnal Pengabdian Kepada Masyarakat Jurnal Polimesin
Muharnif M
Universitas Muhammadiyah Sumatera Utara
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Corrosion Behavior of Al6061-T6 by GTAW with Different Filler Metals Suherman, Suherman; Muharnif; Lubis, Riadini Wanty; Irfansyah; F.X.A , Wahyudianto
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, Desember 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.6496

Abstract

This study aims to compare the effect of filler metal of gas tungsten arc welding (GTAW) on the corrosion rate of Al6061 alloy weld metals. Three different filler metals, ER4043, ER4047, and ER5356, were used in the GTAW welding process. The corrosion rate characteristics of butt weld joints were studied using potentiodynamic testing in a 3.5% NaCl solution. The microstructure of the corroded weld metal was analyzed using Scanning Electron Microscopy (SEM). Results showed that filler metals affect the corrosion resistance of weld metal. It was found that ER4043 and ER4047 are more susceptible to corrosion, while ER5356 shows good corrosion resistance compared to the other filler metals. SEM observations revealed that dominant pitting corrosion was found in all welded joints and the base metal, with pit diameters ranging from 10 to 60 μm. Moreover, it was found that the Heat-Affected Zone was more susceptible to corrosion compared to the weld metal zone. Finally, welding of Al6061 using ER5356 filler metal is more recommended due to its superior resistance to pitting corrosion compared to the other types of joints.
Perancangan Mesin Dewatering Untuk Pemisah Sludge Pada Kolam IPAL Pabrik Kelapa Sawit Suherman, Suherman; Mizhar, Susri; Muharnif, Muharnif; Ilmi, Ilmi; Tanjung, Muhammad Subhan Ananda
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.v4i1.198

Abstract

Sludge generated from the wastewater treatment plant of palm oil mills contains a very high moisture content, which increases volume, handling costs, and poses a potential risk of environmental pollution if not properly managed. One of the main challenges encountered is the lack of a simple, economical small-scale dewatering machine that is suitable for the characteristics of sludge produced by palm oil mill wastewater treatment systems. This study aims to design and fabricate a dewatering machine to separate sludge from water in the wastewater treatment ponds of a palm oil mill. The research method involved designing the machine using SOLIDWORKS software, performing technical calculations of the main components such as motor power, shaft dimensions, belt transmission, and bearings, followed by fabrication and assembly processes. The performance of the machine was then evaluated based on its ability to separate sludge and water. The results indicate that the designed dewatering machine has a capacity of 200 litres per hour with a motor power of 1 HP; however, its performance has not yet reached optimal conditions, as part of the sludge remains attached to the screen, thereby increasing the motor load and hindering the movement of the screw. The findings of this study suggest that the dewatering machine design has the potential for further development through optimisation of the screw geometry and filtration system in order to improve sludge water separation efficiency in palm oil mill wastewater treatment plants.
Rancang Bangun Troli Multifungsi Kapasitas 100 Kg Rahmatullah, Rahmatullah; M, Muharnif; Nasution, Arya Rudi; Barus, Syahputra; Octariza, Gintara
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.26784

Abstract

Technology to facilitate human activities in lifting and transporting work continues to develop. Trolleys are tools that can help move goods. The design of the trolley is planned to be able to transport simply but strong and stable. This trolley is made using plate materials, iron pipes and others in its manufacture. The materials are selected to ensure durability against heavy loads. The trolley lifting system is an electrical system that includes a battery, an electric motor, and a switch to control the trolley automatically. The trolley is made using 19 mm iron pipes, wheels, 3 mm iron plates, a transport body frame made of 58 mm iron pipes and also the drive or carrier is a 5 mm steel sling with 2 pcs electric motor batteries with a power of 12 volts each. The trolley made can carry an effective load of around 100 kg, but its performance will decrease as the load increases. Future suggestions are the use of lighter but stronger materials such as aluminum or composites, the use of larger capacity and efficient electric motors, and testing with a wider variety of loads to understand the limits and maximum performance of the trolley. Training in proper use and maintenance of the trolley is recommended to ensure optimal condition and maximum service life.
Karakteristik Minyak Atsiri Dari Kulit Jeruk Manis, Kulit Jeruk Purut, Dan Kulit Jeruk Bali Dengan Metode Distilasi Mukhtar, Muharnif; Ridho, Davidsyah; Suherman, Suherman; Khair, Hadriman
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.27260

Abstract

The distillation method is one way to produce essential oils from various parts of plants such as flowers, stems, bark and fruit, seeds and roots. This process has the advantage of oil purity and lower costs. The selection of sweet orange peel, kaffir lime peel and grapefruit peel as raw materials for making essential oils is due to their easy availability with fairly good essential oil characteristic quality. This study aims to obtain the best characteristic quality among the three types of peel used so that it is suitable for its use. The characteristics of essential oils analyzed include yield, acidity level (pH), water content, aroma resistance and color. The quality of essential oil characteristics greatly influences the use of essential oils in the industrial world such as food, beverages, perfumes, medicines and cosmetics. Based on the results obtained, kaffir lime peel produced the highest yield of 1.24%, the lowest water content of 9.21 indicating quality essential oil, the highest acidity level (pH) with a pH of 4.59 and a slightly yellowish clear color.
Pelatihan Pembuatan Sabun Cuci Piring Sebagai Upaya Peningkatan Keterampilan Anak Panti Asuhan Putera Muhammadiyah Kota Medan Suherman, Suherman; Lumban Tobing, Surya Sevi Wijayanna; Muharnif, Muharnif; Nasution, Adinda Juwita; Ilmi, Ilmi
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i3.370

Abstract

Training in making dish soap is a community service activity that aims to improve children's skills. This activity was carried out at the Muhammadiyah Putra Orphanage, Medan City, with the target of adolescent foster children. The methods used include counseling, direct practice in making dish soap, and discussion and evaluation of the results of the activities. The training materials include introductions to raw materials, the mixing process, and packaging techniques. The results of the activity showed that participants were able to understand and independently practice the process of making dish soap. In addition, participants gained basic knowledge of business opportunities in the household product industry. This activity has a positive impact on life skills and on fostering entrepreneurial motivation among foster children. Training in making dish soap is expected to be a sustainable skill provision and has the potential to be developed as an independent business in the orphanage environment.
PEMBUATAN HYDROFOIL TURBIN DARRIEUS Muharnif M; Elvy Sahnur Nasution
Sisfo: Jurnal Ilmiah Sistem Informasi Vol. 2 No. 1 (2018): Sisfo: Jurnal Ilmiah Sistem Informasi, Mei 2018
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/sisfo.v2i1.1004

Abstract

Hydrokinetic water turbines do not require high water pressure (head) to work.Another advantage of the Darrieus turbine is that it is less sensitive to turbulencebut sensitive to flow direction. Among some forms of turbine turbine turbinegeometry, straight-angled geometry (or H-Darrieus) is more popular due to easierfabrication and simpler construction. The number of blades using the NACA type0012 H-rotor has the best self-starting effect but not for all azimuth blade positions.If the blade is fixed and unregulated then the angle of charge will change at anytime depending on the position of the blade which consequently alters thedynamic force of the water to the blade and therefore tends to occur in the lowtorque of the tubin and decrease the turbine effiency. One disadvantage of theDarrieus turbine is its low self-starting torque. So the problem in this research ishow the turbine produced performance with variation of the number of blades.The study was conducted to analyze the perforamance of low-speed darrieusturbines shown by self-starting characteristics, dynamic torque, power, andefficiency produced by turbines. The test rig comprises two main components: amodel of stream flow made of acrylic and a model of the Darrieus turbine. Rivermodels from upstream shelters, canals and downstream water reservoirs. Waterfrom upstream flows into the runner through the incoming side. Then waterflowed into the downstream storage basin. In the construction of this model is notmunggunakan draft tube. The runner house has a fully enclosed top casing with nodraft tube and wall, the water flow rate and Head of water level are set by the feedwater pump. The difference between the water level in the upstream reservoir andthe water level in the canal is kept constant. Once the above is achieved then it canbe tested. The shaft rotation is measured by the rotation sensor and the shafttorque force is measured using a load cell. Experiments carried out with variationsof torque loads with constant flow rate of water The manufacture of the Darrieousturbine model testing apparatus has been completed. This model comes with aData acquisition Tool using arduino UNO with DAQ PLX that works according toplan. In taking the research dataKey word: Darrieus turbine, hydrofoil,manufacture
Co-Authors A M Siregar A, Arfis Abdullah, Ilmi Adinda Juwita Nasution Ahmad Marabdi Siregar Ali, Rizki M Arya Rudi Nasution Asfiati, Sri Aulia, Rakha Ramdan Barus, Syahputra Dewi Andriany Elvy Sahnur Nasution F.X.A , Wahyudianto Febrian, Muhammad Kevin Hadriman Khair Hutasuhut, Abdul Azis Ilmi Ilmi, Ilmi Irfansyah IRMA DEWI khairul umurani Kurniawan, Rendy Lubis, Riadini Wanty Lubis, Yusuf Lumban Tobing, Surya Sevi Wijayanna M Yani M Yani Mariono, Nanang Pat Sumantri Marzuki Marzuki Mawardi Mutia Arda, Mutia Nasution, Firman AlwiArif Nikmal, Nikmal Nurzanah, Wiwin Octariza, Gintara Pane, Yunita Pohan, Muhammad Ade syahputra Rahmatullah Rahmatullah Kasim Rahmatullah Rahmatullah Randy Septiawan Refan, Mahammad Ridho, Davidsyah Rimbawati Sandi, Didik Mei Siagian, Nusyirwan Said Siregar, Chandra Amirsyahputra Suherman Suherman ., Suherman Suherman, Suherman Suroso, Bekti Susri Mizhar Tanjung, Muhammad Subhan Ananda Umuani, Khairul Wan Hamzah, Azmi Zogner Halawa, Kevin