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All Journal Jurnal Teknik Mesin Indonesia RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi EPSILON: Journal of Electrical Engineering and Information Technology Jurnal Rekayasa Teknologi Nusa Putra
Rahmad Hidayat Boli
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Perencanaan Sistem Kelistrikan Gedung Kantor Pertanahan Kabupaten Bolaang Mongondow Utara Humena, Steven; Mohamad Andriansyah Posumah; Frengki Eka Putra Surusa; Adnan Qosim; Rahmad Hidayat Boli
EPSILON: Journal of Electrical Engineering and Information Technology Vol 22 No 2 (2024): Journal of Electrical Engineering and Information Technology
Publisher : Department of Electrical Engineering, UNJANI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/epsilon.v22i2.120

Abstract

Office buildings and homes are in dire need of electrical installations, but there are still quite a lot of people we meet who do not understand the design of safe electrical installations in accordance with the General Regulation on Electrical Installation (PUIL). By paying attention to PUIL in the installation of electrical installation design, a good and correct and safe electrical installation can be obtained. The purpose of this study is to determine a good and correct and safe electrical installation, determine the specifications and safety components needed and determine the recapitulation of the power used. The method of planning the electrical system in the building follows the standards that have been determined, namely PUIL 2020 and SNI energy conservation in lighting systems 2020. This planning produces installation design drawings in the form of situation drawings and one-line diagrams. From the calculation, a current of 55.63 Amperes was obtained and a total installed power of 36,571 VA, so that the main MCCB protection component was selected with a capacity of 3 x 63 Ampers. For the submission of electrical power connection services to PT. PLN (Persero) is 41,500 VA with a 3 x 25 Ampere MCB limiter. The type and cross-sectional area of the cable selected for the main cable based on PUIL 2020 is NYY 4 x 25 mm2.
KAJIAN PENGARUH KONTROL ALIRAN TERHADAP KOEFISIEN HAMBAT MODEL KENDARAAN Rahmad Hidayat Boli; Wawan Rauf; Moh Rifal; Rifaldo Pido
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%.
Kajian efek perlakuan kontrol aktif dan pasif pada hambatan kendaraan Rauf, Wawan; Mohamad Rifal; Rahmad Hidayat Boli; Zulfikar Abdul Haris
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.713

Abstract

Increasing fuel consumption efficiency and controlling fuel price increases and environmental impacts challenge manufacturers to think outside conventional vehicle systems by focusing on aerodynamic drag. Various efforts can be made to reduce aerodynamic drag, one of which is by delaying flow separation. Separation delay can be done by providing passive control treatment in the form of dimple and spoiler and active control in the form of blowing. This study aims to analyze aerodynamic drag by applying dimple, spoiler, and blowing to the upper side of the rear of the vehicle model using a computational method. Computational tests are carried out at an upstream speed of U0 = 20 m / s. Flow pattern analysis is presented to support the results of the drag coefficient (Cd) obtained. The results of the analysis show that the application of dimple, spoiler, and blowing to the upper side of the rear of the model successfully delays separation and reduces backflow and reduces the amount of drag (Cd).
Uji Fisik Papan Komposit Partikel Eceng Gondok Menggunakan Perekat Plastik HDPE Lamami, Suparmanto; Nurmala Shanti Dera; Mohamad Rifal; Rahmad Hidayat Boli; Novrianti Talango
Jurnal Rekayasa Teknologi Nusa Putra Vol 11 No 1 (2025): Februari 2025
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/rekayasa.v11i1.447

Abstract

Pengembangan teknologi hijau atau teknologi ramah lingkungan semakin serius dikembangkan. Salah satunya adalah teknologi komposit dengan material serat alam (Natural Fiber). Tuntutan teknologi ini disesuaikan juga dengan keadaan alam yang mendukung untuk pemanfaatannya secara langsung. Salah satu serat alam yang dapat digunakan untuk pembuatan material composite adalah eceng gondong. Serat eceng gondok merupakan jenis serat yang berkualitas baik dan merupakan salah satu bahan alternatif yang dapat digunakan sebagai filler pada pembuatan komposit. Serat eceng gondok dapat meningkatkan kuat tarik dan modulus elastisitas. Material yang digunakan pada penelitian ini menggunakan plastik HDPE sebagai perekat dan ecenggondok digunakan sebagai filler material komposit.. perbandingan campuran material komposite adalah 60% HDPE dan 40% partikel eceng gondok. Papan komposit dicetak menggunakan mesin hot press pada suhu 1400C dengan tekanan hidrolik 100 kg/cm2. Berdasarkan hasil penelitian yang telah dilakukan kualitas papan komposit dalam hal ini sifat fisik yaitu kerapatan, kadar air dan daya serap air telah memenuhi standar SNI-03-2105-2006 dimana semakin besar penambahan plastik maka sifat fisis dari papan komposit semakin baik. Namun berbeda halnya dengan sifat fisik penambahan tebal tidak memenuhi standar disebabkan bahan plastik dan partikel eceng gondok tidak dapat menyatu sehingga pada saat perendaman terjadi pemisahan antara plastik dengan partikel eceng gondok
Co-Authors Adnan Qosim Frengki Eka Putra Surusa Lamami, Suparmanto Moh Rifal Mohamad Andriansyah Posumah Mohamad Rifal Novrianti Talango Nurmala Shanti Dera Rauf, Wawan Rauf, Wawan Rifaldo Pido Steven Humena Zulfikar Abdul Haris