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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Rekayasa Mesin JURNAL SIMETRIK Jurnal Teknik Mesin Indonesia RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Journal of Vocational Education and Automotive Technology JGEN : Jurnal Pengabdian Kepada Masyarakat SWARNA: Jurnal Pengabdian Kepada Masyarakat RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Rauf, Wawan
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Religion Aerospace Engineering Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering

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KAJIAN PENGARUH KONTROL ALIRAN TERHADAP KOEFISIEN HAMBAT MODEL KENDARAAN Boli, Rahmad Hidayat; Rauf, Wawan; Rifal, Moh; Pido, Rifaldo
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.355

Abstract

The characteristics of the airflow that is formed around the vehicle body affects the value of the resistance acting on the vehicle. When it reaches the rear edge of the vehicle, the flow undergoes a process of separation. So modification of the vehicle body design that is able to reduce the separation is urgently needed. Flow engineering around the vehicle body can be obtained by modifying the shape which is considered more aerodynamic. Meanwhile, flow engineering can also be obtained through the application of an active control system in areas that are considered to have the potential to initiate flow eddies on the rear side of the vehicle and have a major influence on the formation of flow separation. This research aims to examine the impact of the application of flow control blowing technique on the resistance of the modeled vehicle. The geometric angle of the front wall is determined to be 35°. The research uses a numerical computational approach with a standard k-epsilon as a turbulence model. The upstream velocity applied is 13.9 m/s, while the blowing velocity is set at 0.5 m/s. The research results prove that the application of blowing flow control has succeeded in minimizing the formation of wake structures and has the effect of delaying separation and has succeeded in reducing the aerodynamic drag coefficient to 9.3187%.
EFEK PENERAPAN KONTROL AKTIF BLOWING TERHADAP TARIKAN AERODINAMIKA MODEL KENDARAAN Rauf, Wawan; Rifal, Moh; Pido, Rifaldo; Boli, Rahmad Hidayat; Haris, Zulfikar Abd
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.358

Abstract

Vehicle stability when driving is an issue that needs attention because it relates to comfort in driving and the effectiveness of fuel consumption. This is caused by the large aerodynamic drag force of the vehicle due to the structure of the air flow which flows regularly and experiences separation when it reaches the rear end point of the vehicle. This separation of the flows causes significant negative pressure on the rear window due to the return flow which does not follow the shape of the vehicle body. The purpose of this study was to analyze the effect of implementing active control of blowing type flow on vehicle models on aerodynamic drag. This study applies a numerical computational method with a modified Ahmed body model as the main object of research. The active blowing control is placed at the rear end of the model which is considered the initial separation area. Blowing speed was varied 0.2 m/s, 0.8 m/s, 1.5 m/s, and 2.0 m/s and was tested at an upstream speed of 16.7 m/s. Research results indicate that the application of active blowing control has succeeded in providing a delay in separation effect, reducing turbulence and reducing aerodynamic drag by 8-9%.
KAJIAN EKSPERIMENTAL PENGARUH CAMPURAN ETANOL DAN PERTAMAX TERHADAP KONSUMSI BAHAN BAKAR MOTOR INJEKSI 125CC Rauf, Wawan
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 2 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i2.412

Abstract

Abstract: Experimental Study of the Effect of a Mixture of Ethanol and Pertamax on Fuel Consumption of a 125cc Injection Motorcycle. Currently the need for petroleum is quite high. This is because transportation and industry still rely on petroleum as the main fuel. Ethanol has similar properties to Pertamax fuel which can be applied to every vehicle, especially two-wheeled vehicles. The aim of this research is to find out how the addition of ethanol to Pertamax fuel affects the amount of fuel consumed by injection motorbikes. The mixture percentages that will be tested are E10+P90, E20+P80, and E30+P70 respectively, and then the consumption results are compared with tests using pure Pertamax (E0+P100). The test results show that the use of Ethanol-Pertamax mixed fuel can be reduced when the percentage of the ethanol mixture is below 50%. Where the lowest fuel consumption is the E30+P70 mixture at 16.4% compared to pure Pertamax consumption.
Sosialisasi dan Pengenalan Forensik Engineering Sebagai Upaya Peningkatan Kompetensi Mahasiswa Teknik di Universitas Gorontalo Setiawan, Arman; Hidayat, Andi Sahrul; Olii, Abdul Kadir Sailani; Delihula, Andi; Rauf, Wawan; Nurhidayah, Tri; Sakawuna, Wandira Agus; Duhita, Anselma Diksita Prajna
JGEN : Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 1 (2026): JGEN : Jurnal Pengabdian Kepada Masyarakat, Februari 2026
Publisher : Lumbung Pare Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60126/jgen.v4i1.1442

Abstract

Forensik engineering merupakan bidang multidisiplin dalam teknik yang berperan penting dalam mengidentifikasi penyebab kegagalan struktur, infrastruktur, maupun sistem rekayasa. Namun demikian, pemahaman mahasiswa teknik terhadap konsep dan penerapan forensik engineering masih relatif terbatas, khususnya di lingkungan Universitas Gorontalo. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan dan kompetensi mahasiswa teknik melalui sosialisasi dan pengenalan forensik engineering sebagai bagian dari penguatan kapasitas akademik dan profesional. Metode pelaksanaan kegiatan meliputi penyampaian materi secara interaktif, diskusi studi kasus kegagalan struktur, serta evaluasi pemahaman peserta melalui kuesioner pre-test dan post-test. Sasaran kegiatan adalah mahasiswa Fakultas Teknik Universitas Gorontalo dari berbagai program studi. Hasil kegiatan menunjukkan adanya peningkatan signifikan pada pemahaman peserta terhadap konsep dasar, ruang lingkup, dan peran forensik engineering dalam dunia keteknikan. Selain itu, kegiatan ini juga menumbuhkan kesadaran mahasiswa akan pentingnya aspek keselamatan, etika profesi, dan tanggung jawab insinyur dalam praktik rekayasa. Dengan demikian, sosialisasi dan pengenalan forensik engineering terbukti efektif sebagai upaya peningkatan kompetensi mahasiswa teknik dan diharapkan dapat menjadi dasar pengembangan kurikulum maupun kegiatan akademik lanjutan di Universitas Gorontalo.
PENGARUH JENIS ELEKTRODA PENGELASAN SMAW TERHADAP KEKUATAN LAS BAJA KARBON RENDAH Dera, Nurmala Shanti; Sahidu, Idris; Ishak, Sahionl; Talango, Novriyanti; Rauf, Wawan
Journal of Vocational Education and Automotive Technology Vol 7 No 2 (2025): Journal of Vocational Education and Automotive Technology
Publisher : Ivet University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/joveat.v7i2.4321

Abstract

Low carbon steel such as ST 37 is widely used in manufacturing and construction industries due to its ease of fabrication and cost-effectiveness. However, one of its main drawbacks is its relatively low hardness and wear resistance, especially after welding processes. The Shielded Metal Arc Welding (SMAW) method is highly influenced by the type of electrode used, which significantly affects the mechanical properties of the weld joint. This study aims to investigate the effect of electrode variation (E6010, E6013, and E7018) on the mechanical properties of ST 37 low carbon steel after undergoing thermochemical treatment using the pack carburizing method. An experimental quantitative approach was used in this research. ST 37 steel samples were welded using three different types of electrodes, followed by pack carburizing at 950°C for two hours using coconut shell charcoal as the carbon source, and then quenched in oil. Mechanical properties were evaluated through tensile and hardness tests, including calculations of strain and elastic modulus. The results showed that the E6010 electrode provided the best performance, with the highest average tensile strength of 25.835 MPa and the highest strain value of 0.2667, indicating strong and ductile weld joints. In contrast, the E7018 electrode yielded the highest elastic modulus at 104.363 MPa, reflecting a stiffer but less ductile material. These findings confirm that electrode selection plays a critical role in determining the mechanical behavior of welds, particularly when combined with surface hardening treatments like pack carburizing. This study contributes to scientific understanding and offers practical recommendations for improving weld quality in both industrial and academic contexts.
Co-Authors Aliwu, Isnandar M Arbie, Mohamad Rifal Arman Setiawan Bokingo, Deya M Boli, Rahmat Hidayat Bumulo, Nasir Datau, Moh Gunawan Day, Randy Rianto Delihula, Andi Dera, Nurmala Shanti Dikson junus Duhita, Anselma Diksita Prajna Haris, Zulfikar Abd Hidayat, Andi Sahrul Ichsan, Ilyas Ishak, Sahianol Ishak, Sahionl Kalangit, Meyland S Lamadjo, Susanti Laudengi, Salsa A Maliki, Rahmat Menu, Dita Mohamad Rifal Mohamad Rifal Nento, Sartan Olii, Abdul Kadir Sailani Palilati, Mifidyah Putri Paneo, Fatma Rahmad Hidayat Boli Rahmad Hidayat Boli Rifal, Moh Rifaldo Pido Sahidu, Idris Sahional Ishak Sakawuna, Wandira Agus Santili, Putri J Y R Talango, Novriyanti Tanango, Juwita Tri Nurhidayah, Tri Uto, Balgis A Wading, Novi Y Zulfikar Abdul Haris