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All Journal Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Jurnal Syntax Transformation Jurnal Pengabdian kepada Masyarakat Nusantara International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Teknik Terapan (J-TETA)
Perkasa, Rilis Eka
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences

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Sosialisasi dan Pemasangan Lampu PJUTS Di Desa Gondowangi Kecamatan Wagir Kabupaten Malang Weddakarti, Eva; Ekasari, Silvia Rahmi; Perkasa, Rilis Eka; Widhi Supriyanto, Nicky Suwandhy; Nadhifatul Aini, Fica Aida; Hariyanto, Moh.Nasir
Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Vol 6, No 4 (2023): Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstormin
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/japhb.v6i4.5693

Abstract

Minimnya pemahaman masyarakat mengenai dampak negatif  pembangkit listrik yang memanfaatkan bahan bakar fosil dan energi terbarukan menjadi alasan diselenggarakannya kegiatan PPM ini untuk tujuan edukasi, serta mensosialisasikan teknologi yang bernilai manfaat untuki masyarakat berupa instalasi energi surya. Penerangan  Jalan Umum Tenaga Surya (PJUTS). Berdasarkan hasil survei, fasilitas penerangan umum di pintu masuk desa Gondowangi Kecamatan Wagir Kabupaten Malang sangat sedikit sehingga aktivitas masyarakat  pada  malam hari kurang maksimal. Tujuan dari kegiatan PPM ini adalah menyediakan sistem PJU berbasis sel surya untuk mengakomodasi kegiatan Masyarakat pada malam hari. Ada dua hasil yang dicapai dari kegiatan PPM ini, yaitu mengedukasi masyaraat mengenai energi terbarukan dan efisiensi penggunaan energi guna mengurangi dampak buruk lingkungan akibat pembangkit listrik fosil. Kegiatan ini merupakan Pembangunan berkelanjutan. Selain itu, penyediaan lampu PJUTS sangat membantu masyarakat dalam beraktivitas di malam hari dan  menciptakan kondisi yang lebih kondusif di masyarakat.
MECHANICAL ANISOTROPY OF COLD-ROLLED ST-37 STEEL PLATE UNDER HIGH STRAIN RATES LOADINGS Perkasa, Rilis Eka; Gunawan, Leonardo; Santosa, Sigit Puji; Afdhal, Afdhal
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 2 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.02.9

Abstract

Cold rolling process in metal could increase its strength and hardness, but also induces mechanical anisotropy. This is caused by unresolved plastic strain and microstructural changes caused by plastic deformation exerted by pair of rolls at a relatively low temperature. This research aims to provide understandings on anisotropic and strain rate sensitive behaviour of St-37 mild steel. The microstructure of rolled and unrolled St-37 plate were observed in 3 directions relative to the rolling direction. The cylindrical specimens were then prepared from rolled plate with 33.3% reduction in the orientation of 0o, 45o, and 90o relative to the rolling direction. Specimens were also prepared from unrolled plate as comparison in the same directions. These specimens were then tested in compression loading, first in quasi-static condition, and then by using Split-Hopkinson Pressure Bar (SHPB) at the strain rate of 1200 s-1. The experimental results in the form of stress-strain curves are used to obtain the parameters of Simplified Johnson-Cook viscoplastic model. The anisotropy of yield strength in rolled specimens could be seen on both quasi-static and high strain rate condition, where the highest strength found on the specimens perpendicular to the rolling direction. In addition, the effect of cold rolling to the strain rate sensitivity of the material were also captured successfully in this study, where specimens from rolled plate show less strain rate sensitivity compared to the unrolled specimens.
Reverse Engineering Design Of Ceiling Lamp Changer To Increase Product Value By Using Dfma Methode Pranoto, Bayu; Weddakarti, Eva; Perkasa, Rilis Eka; Ekasari, Silvia Rahmi; Supriyanto , Nicky Suwandhy Widhi
Jurnal Syntax Transformation Vol 6 No 6 (2025): Jurnal Syntax Transformation
Publisher : CV. Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jst.v6i6.1083

Abstract

The prevalent manual method of replacing ceiling lamps, which often involves climbing on unstable furniture, poses significant safety risks, including potential falls, electrocution, and other severe injuries. This common practice underscores an urgent need for safer and more efficient lamp maintenance solutions in both domestic and commercial settings. This research aims to mitigate these inherent dangers by developing and upgrading conventional ceiling lamp changers into a semi-automatic system. The primary objectives are to enhance the safety, speed, and overall ease of the lamp replacement process, thereby effectively minimizing the risk of user injury. The proposed methodology involves designing a semi-automatic ceiling lamp changer by integrating a control switch mechanism that enables remote rotation of the lamp holder. This innovative approach will facilitate the safe removal and installation of lamps without direct manual contact or the necessity of climbing. Concurrently, comprehensive product cost planning and market-driven pricing strategies will be conducted to ensure the device’s affordability and widespread community acceptance. The successful development of this semi-automatic ceiling lamp changer is anticipated to provide a significantly safer, faster, and more convenient alternative for lamp replacement. This remote-operated design is expected to substantially reduce injury incidents associated with current manual methods. By ensuring affordability and market compatibility, this innovation aims to achieve broad community adoption, ultimately contributing to safer environments for lamp maintenance.    
Analisis Numerik Pengaruh Variasi Tinggi Vortex Generator terhadap Karakteristik Aerodinamika Sayap Berbasis Computational Fluid Dynamics (CFD) Perkasa, Rilis Eka; Mashudi, Imam; Gunawan, Chandra; Amrullah, Utsman Syah
Jurnal Teknik Terapan Vol. 4 No. 2 (2025): Oktober
Publisher : P3M Politeknik Negeri Jember

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

Abstract

A vortex generator is an aerodynamic device installed on wings or other surfaces to enhance lift and delay stall at high angles of attack. This study aims to analyze the effect of vortex generator installation on the aerodynamic characteristics of a straight wing. Numerical simulations were conducted using the computational fluid dynamics (CFD) method on a three-dimensional wing model with a NACA 4412 airfoil section. Triangular vortex generators with heights of 10 mm and 20 mm were applied, while a clean wing without vortex generator was used as a reference. The wing was subjected to an airflow velocity of 50 m/s at several angles of attack. The main parameters observed were the lift coefficient (CL), drag coefficient (CD), and flow visualization around the wing surface. The simulation results show that the addition of a 10 mm vortex generator increases CL at higher angles of attack compared to the clean wing. In contrast, the installation of a 20 mm vortex generator primarily resulted in a higher CD and did not provide a positive contribution to lift performance. Overall, it could be concluded that  for this research configuration, the 10 mm vortex generator increase the aerodynamic performance of the wing.
Peningkatan Kemanan dengan Pemasangan IP CCTV dan Pelatihan di Lingkungan Kepuharjo Kabupaten Malang Ekasari, Silvia; Weddakarti, Eva; Alia, Nila; Puspitasari, Etik; Perkasa, Rilis Eka
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 5 No. 4 (2024): Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN) Edisi September - Desembe
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v5i4.4375

Abstract

Desa Kepuharjo memiliki wilayah yang berbatasan dengan jalan provinsi dengan arus lalu lintas kendaraan sepeda motor, mobil, dan moda angkutan lain yang ramai. Dekat dengan lokasi wisata dan merupakan jalur alternatif menuju Kota Batu maupun Kota Surabaya. Kondisi cukup ramainya lalu-lalang orang dan kendaraan tersebut memberikan keuntungan bagi penaikan kondisi perekonomian masyrakat sekitar sekaligus memberikan potensi meningkatnya kerawanan tindak kejahatan, kerawan terjadinya kecelakaan, kebakaran, bahaya-bahaya lainnya. Sehingga dibutuhkan instalasi sistem keamanan berupa pemasangan IP CCTV dan pelatihan untuk memberikan peningkatan pemahaman kepada warga untuk mengenali dan memanfaatkan teknologi baru yang dapat meningkatkan peran serta warga untuk dapat berkontribusi positif dalam meningkatkan keamanan, kenyaman lingkungan sekaligus mampu memeberikan data rekaman kronologis suatu kejadian untuk kebutuhan penganalisaan lanjutan menjadi sangat penting untuk dilakukan. Dengan pelaksanaan pengabdian ini diharapkan dapat meningkatkan keamanan di lingkungan Desa Kepuharjo.
MECHANICAL ANISOTROPY OF COLD-ROLLED ST-37 STEEL PLATE UNDER HIGH STRAIN RATES LOADINGS Perkasa, Rilis Eka; Gunawan, Leonardo; Santosa, Sigit Puji; Afdhal, Afdhal
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 2 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.02.9

Abstract

Cold rolling process in metal could increase its strength and hardness, but also induces mechanical anisotropy. This is caused by unresolved plastic strain and microstructural changes caused by plastic deformation exerted by pair of rolls at a relatively low temperature. This research aims to provide understandings on anisotropic and strain rate sensitive behaviour of St-37 mild steel. The microstructure of rolled and unrolled St-37 plate were observed in 3 directions relative to the rolling direction. The cylindrical specimens were then prepared from rolled plate with 33.3% reduction in the orientation of 0o, 45o, and 90o relative to the rolling direction. Specimens were also prepared from unrolled plate as comparison in the same directions. These specimens were then tested in compression loading, first in quasi-static condition, and then by using Split-Hopkinson Pressure Bar (SHPB) at the strain rate of 1200 s-1. The experimental results in the form of stress-strain curves are used to obtain the parameters of Simplified Johnson-Cook viscoplastic model. The anisotropy of yield strength in rolled specimens could be seen on both quasi-static and high strain rate condition, where the highest strength found on the specimens perpendicular to the rolling direction. In addition, the effect of cold rolling to the strain rate sensitivity of the material were also captured successfully in this study, where specimens from rolled plate show less strain rate sensitivity compared to the unrolled specimens.
Co-Authors Afdhal Afdhal Amrullah, Utsman Syah Ekasari, Silvia Ekasari, Silvia Rahmi Etik Puspitasari, Etik Gunawan, Chandra Hariyanto, Moh.Nasir Imam Mashudi, Imam Leonardo Gunawan, Leonardo Nadhifatul Aini, Fica Aida Nicky Suwandhy Widhi Supriyanto Nila Alia Pranoto, Bayu Santosa, Sigit Puji Supriyanto , Nicky Suwandhy Widhi Weddakarti, Eva