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All Journal Jurnal Simetris SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Rekayasa Mesin JURNAL PENGABDIAN KEPADA MASYARAKAT R.E.M (Rekyasa Energi Manufaktur) Jurnal Journal of Electrical Technology UMY JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal SOLMA Rancang Bangun Jurnal Rekayasa Material, Manufaktur & Energi RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Martabe : Jurnal Pengabdian Kepada Masyarakat Multitek Indonesia : Jurnal Ilmiah Jurnal Teknik Mesin Indonesia Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vocatech : Vocational Education and Technology Journal Journal of Applied Engineering and Technological Science (JAETS) ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Teknologika IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Rekayasa elektrika Majalah Teknik Mesin
Arya Rudi Nasution
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Muhammadiyah Sumatera Utara
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Studi Eksperimental Pengaruh Parameter Pemakanan terhadap Kekasaran Permukaan Baja AISI 1045 pada Proses Pemesinan Bubut Harahap, Jagodang; Maulidin, Maulidin; Saputra, Edi; Tanjung, Iqbal; Nasution, Arya Rudi
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.v9i1.28323

Abstract

ABSTRACKThe quality of machining results in turning operations is strongly influenced by the surface finish produced. Surface roughness is a critical parameter for assessing machining performance as it directly affects wear resistance, efficiency, and the service life of components. Medium carbon steel AISI 1045 is widely applied in manufacturing industries, particularly for shafts, gears, and structural elements, due to its favorable mechanical properties. However, its surface finish is highly sensitive to machining parameters, making the selection of cutting conditions essential. This study aims to evaluate the effect of cutting speed and depth of cut on the surface roughness of AISI 1045 steel using conventional turning. Cylindrical specimens measuring Ø30 mm × 80 mm were machined with a carbide cutting tool under three cutting speeds (127, 225, and 510 rpm) and four depths of cut (0.2, 0.4, 0.4 and 0.6 mm). Surface roughness was measured using a Mitutoyo SJ-310 profilometer at four reference points, and the average Ra value was taken as the representative result. The findings reveal that the lowest cutting speed (127 m/min) combined with the smallest depth of cut (0.2 mm) produced the smoothest surface with Ra = 2.388 µm. In general, increasing cutting speed and depth of cut led to lowew roughness values, with the maximum recorded at 9.760 µm under certain extreme conditions. Several anomalies were also observed at high cutting speeds due to vibration and process instability. In conclusion, proper selection of machining parameters is crucial to achieving optimal surface quality while maintaining process efficiency. These results may serve as a practical reference for manufacturing industries in optimizing the turning of AISI 1045 steel.
Analisis Mesh Size Untuk Konvergensi Coil Spring Roda Depan Minibus Menggunakan Metode Elemen Hingga Jagodang Harahap; Teuku Edisah Putra; Arya Rudi Nasution; Veranita Veranita
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 2 (2025): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i2.12695

Abstract

AbstractMesh convergence in finite element analysis is crucial for ensuring simulation accuracy, especially in vehicle coil springs. However, limited studies have evaluated the balance between accuracy and computational efficiency due to mesh size variations. Stress-strain data is obtained from the strain that occurs when driving by installing a strain gauge on the coil spring. This study analyzes the effect of mesh size on stress distribution, deformation, and computation time in the front coil spring of a minibus using FEMAP NX Nastran software. The results show that smaller mesh sizes yield higher stress and deformation values, with a maximum stress of 817 MPa at a 0.1 mesh size and 733 MPa at a 0.6 mesh size. While improving accuracy, finer mesh sizes significantly increase computation time. Therefore, balancing accuracy and computational efficiency is essential for optimizing coil spring design, with further research recommended to determine the optimal mesh size in finite element simulations.Keywords— Mesh Convergence, Finite Element Analysis, Stress Distribution, Computational Efficiency
Numerical Analysis of Aerodynamic Load Characteristics and Pressure Distribution of NACA 4412 Airfoil in Vertical Wind Turbines Arya Rudi Nasution; Affandi Affandi; Wawan Septiawan Damanik; Rahmat Fauzi Siregar; Jagodang Harahap
VOCATECH: Vocational Education and Technology Journal Vol 8, No 1 (2026): April
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v8i1.303

Abstract

AbstractThe performance of a wind turbine is largely determined by its blade design, which typically uses airfoil-shaped cross-sections to optimize aerodynamic efficiency. The NACA 4412 airfoil, known for its strong aerodynamic properties, is commonly employed in both aircraft wings and wind turbine blades. Research on this airfoil investigates its lift and drag coefficients under varying wind speeds (2 m/s to 8 m/s), using SolidWorks 2021 for simulations. Results show that higher wind speeds generally increase lift and drag coefficients, with the highest lift coefficient recorded at 6 m/s. However, at 8 m/s, the lift coefficient decreases, highlighting the sensitivity of aerodynamic performance to speed variations. Additionally, pressure distribution increases with speed, while speed distribution decreases. These findings emphasize the importance of speed variations in influencing the aerodynamic behavior of wind turbine blades. The speed variation on the NACA 4412 airfoil affects the lift coefficient, where the lift coefficient and drag coefficient values will increase at each speed, but at a speed of 8 m/s the lift coefficient and drag coefficient will decrease with a lift coefficient value of 1670314e+06 and a drag coefficient value of 7.857e+07. The highest lift coefficient value occurs at a flow speed of 6 m/s of 3.54769e+04, and the highest drag coefficient value occurs at a flow speed of 6 m/s of 2.606e+06.Keywords: Airfoil NACA 4412; CFD; Speed Variations; Lift Coefficient and Drag. AbstrakKinerja turbin angin sebagian besar ditentukan oleh desain bilahnya, yang biasanya menggunakan penampang berbentuk airfoil untuk mengoptimalkan efisiensi aerodinamis. Airfoil NACA 4412, yang dikenal karena sifat aerodinamisnya yang kuat, umumnya digunakan pada sayap pesawat dan bilah turbin angin. Penelitian pada airfoil ini menyelidiki koefisien gaya angkat dan gaya hambatnya dalam berbagai kecepatan angin (2 m/s hingga 8 m/s), menggunakan SolidWorks 2021 untuk simulasi. Hasil penelitian menunjukkan bahwa kecepatan angin yang lebih tinggi umumnya meningkatkan koefisien gaya angkat dan gaya hambat, dengan koefisien gaya angkat tertinggi tercatat pada 6 m/s. Namun, pada 8 m/s, koefisien gaya angkat menurun, yang menyoroti sensitivitas kinerja aerodinamis terhadap variasi kecepatan. Selain itu, distribusi tekanan meningkat seiring dengan kecepatan, sementara distribusi kecepatan menurun. Temuan ini menekankan pentingnya variasi kecepatan dalam memengaruhi perilaku aerodinamis bilah turbin angin. Variasi kecepatan pada airfoil NACA 4412 mempengaruhi koefisien gaya angkat, dimana nilai koefisien gaya angkat dan koefisien gaya hambat akan bertambah pada setiap kecepatan, namun pada kecepatan 8 m/s koefisien gaya angkat dan koefisien gaya hambat akan berkurang dengan nilai koefisien gaya angkat sebesar 1.670314e+06 dan nilai koefisien gaya hambat sebesar 7.857e+07. Nilai koefisien gaya angkat tertinggi terjadi pada kecepatan aliran 6 m/s sebesar 3.54769e+04, dan nilai koefisien gaya hambat tertinggi terjadi pada kecepatan aliran 6 m/s sebesar 2.606e+06.Kata Kunci : Airfoil NACA 4412; CFD; Variasi Kecepatan; Koefisien Angkat dan Hambatan.
Rancang Bangun Prototype Exhaust Fan Otomatis untuk Menstabilkan Udara pada Ruangan Bebas Asap Benny Oktrialdi; Rahmat Fauzi Siregar; Arya Rudi Nasution; Rimbawati Rimbawati; Faisal Irsan Pasaribu; Indra Roza
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 16 No. 2 (2025): JURNAL SIMETRIS VOLUME 16 NO 2 TAHUN 2025
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v16i2.15261

Abstract

Ruangan adalah tempat tertutup yang sering digunakan oleh manusia untuk dijadikan sebagai tempat tidur, kerja atau bahkan tempat menyimpan barang-barang yang sudah tidak di gunakan lagi. Dalam kehidupan sehari-hari,tidak sedikit manusia yang lebih memilih menghabiskan waktunya hanya berada di ruangan saja, karena adanya  kenyamanan. Sistem exhaust fan otomatis berdasarkan sensor MQ02 dan LM35 dirancang untuk menstabilkan kondisi udara di dalam ruangan. Sensor MQ02 digunakan untuk mendeteksi konsentrasi asap tertentu dalam udara, sementara sensor LM35 digunakan untuk mendeteksi suhu ruangan. Ketika konsentrasi asap atau suhu melebihi ambang batas yang ditentukan, sistem akan mengaktifkan exhaust fan untuk mengeluarkan udara dari ruangan, sehingga menjaga kualitas udara dan suhu ruangan tetap optimal. Sistem  ini dirancang dengan menggunakan mikrokontroler atau modul kontrol seperti Arduino untuk mengatur operasi exhaust fan berdasarkan pembacaan sensor. Pengujian dilakukan untuk memastikan respons sistem terhadap perubahan kondisi udara, dan pemeliharaan rutin diperlukan untuk menjaga kinerja system tetap optimal. Sistem ini dapat menjadi solusi efektif untuk meningkatkan kualitas udara di dalam ruangan dengan cara yang otomatis dan efisien. Perancangan alat ini berhasil dilakukan dan hasil pengujian menunjukkan alat mampu mendeteksi konsentrasi asap dan temperatur sesuai dengan kondisi yang diinginkan.
Karakterisasi Ketangguhan Impak Paduan Aluminium–Seng Daur Ulang Hasil Pengecoran Menggunakan Metode Charpy Jagodang Harahap; Indra Mawardi; Sumardi Sumardi; Andi Sudirman; Arya Rudi Nasution
Rekayasa Material, Manufaktur dan Energi Vol 9, No 2: JULI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i2.31581

Abstract

ABSTRACKThis study aims to evaluate the effect of zinc scrzp additional on the impact toughness of cast aluminum alloys. The composition variations used include 95% aluminum–5% zinc, 85% aluminum–15% zinc, and 70% aluminum–30% zinc. Impact properties were tested using the Charpy method according to ASTM E23 standards, while the fracture surface characteristics were analyzed macroscopically to determine the material failure mechanism. The results showed that increasing zinc scrap content was followed by an increase in the alloy's ability to absorb impact energy. The impact energy values were 1.97 J, 2.24 J, and 3.80 J, respectively, while the impact price increased from 24,625 J/m² to 28,041.7 J/m² and reached 47,500 J/m² at the 70% aluminum–30% zinc composition. Macroscopic observations show that all specimens have brittle fracture characteristics, but differences in alloy compositions cause changes in fracture surface characteristics that correlate with increased impact toughness. Based on these results, it can be concluded that the addition of scrap zinc up to 30% can increase the impact toughness of scrap aluminum alloys from castings, so that they have the potential to be used as an alternative recycled-based material for applications requiring resistance to shock loadsKeywords: Scrap Aluminium, Scap Zinc,Alumnium-Zinc Allow Casting, Charpy Impact
Pengujian Mesin Peniris Minyak Goreng Keripik Kentang Kapasitas 20 kg M Zulfani; Tino Hermanto; Arya Rudi Nasution
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.289

Abstract

This study aims to analyze the performance of oil slicing machines on potato chip products that are specifically designed for the needs of small-scale food industries. The machine has a capacity of 10 kg and is operated for 3 minutes per cycle. The test was conducted five times on potato chip samples, with the primary parameters being the weight before and after the slicing process. The average weight of chips before draining is 568 grams, while after draining, it decreases to 529 grams, indicating a 39-gram decrease in mass, which corresponds to a reduction in oil content. The calculation of the thinning efficiency revealed that the engine was capable of reducing the oil content by up to 6.87% of the initial weight. The engine is driven by an electric motor with a rotation of 1380 rpm, transmitted through a pulley system (3 inches: 13 inches), resulting in a tube rotation of 330.5 rpm. These results demonstrate that the slicing machine effectively reduces the oil content of potato chips in a short time, making it suitable for micro and small businesses in the snack sector due to its simplicity, energy efficiency, and cost-effectiveness.
Co-Authors A, Affandi Abd Rahman Bin Dullah Ade Faisal, Ph.D Adly Zulqarnain bin Mohamad Affandi Affandi . Affandi Affandi Ahmad Marabdi Siregar Ahmad Syuhada Al-Khowarizmi, AK Andi Sudirman Arie Pranata Asfiati, Sri Barus, Syahputra Benny Oktrialdi Bintoro, Suryanto Agung Br. Sembiring, Adelia Febrina Budi Dharma Chandra A Siregar Edi Saputra Edi Widodo F, Fadhlurrohman Fahrizal Zulkarnain Faisal Irsan Pasaribu Fajar Ramadhan, Fajar Fetra Vanny Riza Fonna, Syarizal FRAPANTI, SRI FRAPANTI,ST,MT Gustina Siregar Habib Satria Hadi Sucipto, Hadi Harahap, Muhammad Alwi Ripay Harahap, Partaonan Hasanul Arifin Hayulina Manurung, Yayuk Hermansyah Hermasnyah Huzni , Syifaul Indra Mawardi Indra Roza Jagodang Harahap Jagodang Harahap Jagodang Harahap khairul umurani Khairul Umurani Lila Bismala Lubis , ‪Riadini Wanty M Zulfani Mahjudin, Mahyunirsyah Manurung, Yayuk Hayulina Maulidin, Maulidin Muhammad Refan Muharnif M Munawar Alfansury Airegar Mustar, Muhamad Yusvin Nurdin Hendri Octariza, Gintara Oktrialdi, Benny Pratama, Riza Fauzi Putera, Tondi Amirsyah Putra, Mhd Irwansyah Putra, Yudha Andriansyah R, Rohana Rahmadiawan, Dieter Rahmat Fauzi Siregar Rahmatullah . Rahmatullah . Rahmatullah Rahmatullah Refan, Muhammad Rimbawati Rimbawati Rizki Ananda Rohana Rohana Rudi Kurniawan Ruztamreen Bin Jenal S, Dendi Saputra, Andrea Saragi, Jandri Fan HT Siregar, Chandra A Siregar, Chandra Amirsyah Putra Siregar, Rahmat Fauzi Sudirman Lubis Sumardi Sumardi Syaiful Amri Saragih Syarizal Fonna Syifaul Huzni Tanjung, Iqbal Tanjung, Iqbal Teuku Edisah Putra Tino Hermanto Veranita Veranita Wahyudi, Fauzi S Wawan Septiawan Damanaik Wawan Septiawan Damanik Yopan Rahmad Aldori Yudha Andriansyah Putra Z. Fuadi Zahrul Fuadi Zufri, M Sayid