Article Per Year (5 Year)
p-Index From 2021 - 2026
1.756
P-Index
This Author published in this journals
All Journal The Indonesian Journal of Business Administration Jurnal Simetris Journal of Engineering and Management in Industrial System Jurnal Informatika dan Teknik Elektro Terapan Jurnal Fisika FLUX Jurnal Mekanik Terapan Mitra Akademia: Jurnal Pengabdian Masyarakat Jurnal Teknologi Sistem Informasi dan Sistem Komputer TGD Recent in Engineering Science and Technology
Fajar Mulyana
Politeknik Negeri Jakarta
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

Published : 14 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Recent in Engineering Science and Technology

 1 
Design and Construction of Magnetic Support Construction Separator on Track V 33 BC-5 at Greenzone 2 Mulyana, Fajar; Haqqi, Akmal Nafsa Ulya; Handaya, Devi
Recent in Engineering Science and Technology Vol. 3 No. 01 (2025): RiESTech Volume 03 No. 01 Years 2025
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v3i01.85

Abstract

The process of shredding and sorting waste in the Pre Processing method is one of PT Solusi Bangun Indonesia's contributions in overcoming waste and pollution problems. The waste will be shredded into certain sizes and put into the cement kiln. The processing place is called a green zone. In this process, sometimes the material transport contains impurities in the form of metal and the like. This distribution has the potential to cause foreign material to be carried because there is no sorting of waste content. Belt conveyors and dynamic disc screens are often damaged by the metal material. This problem can be overcome with a magnetic separator to separate foreign metals from waste that is channeled using a belt conveyor. The magnetic separator provides protection for the dynamic disc screen and conveyor operating process from foreign material so that the potential for wear on the dynamic disc screen and torn belt conveyor can be avoided. The installation of the magnetic separator position uses a construction based on the optimal position. This study discusses the design and construction of the green zone belt conveyor magnetic separator installation. The construction installation for the magnetic separator aims to facilitate access to maintenance and cleaning, also provide access to dispose of foreign materials and protect the material transport system in the green zone. Before redesign magnetic sparator, the company spent Rp. 389,000,000 maintenance cost from November 2023 to February2024 period.  After redesign, it’s can reducing maintenance and repair costs during the period March 2024 to July 2024 with no maintenance related to metal separation.
Optimization of Bipolar Plate Machining Process Using the Taguchi Method on CNC 3-Axis Maladzi, Radhi; Mulyana, Fajar; Matsaany , Bayun; Yudisha, Nabila; Risfi, Muhammad Prasha; Rahman, Fio Izzafur; Ramadhan, Bilal; Alam, Zezero Meo Cahaya
Recent in Engineering Science and Technology Vol. 4 No. 01 (2026): RiESTech Volume 04 No. 01 Years 2026
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v4i01.140

Abstract

This study aims to optimize the machining parameters of bipolar plates using a CNC 3-axis milling machine based on the Taguchi method. Bipolar plates play a crucial role in proton exchange membrane fuel cells (PEMFCs), where dimensional accuracy and surface quality directly affect cell performance. The machining parameters considered in this research include spindle speed, feed rate, and depth of cut. An L9 orthogonal array was selected to design the experiments, and surface roughness as well as material removal rate (MRR) were evaluated as performance characteristics. Signal-to-noise (S/N) ratio analysis was applied to determine the optimal parameter combination. The results show that spindle speed and feed rate have the most significant influence on surface roughness, while depth of cut mainly affects the MRR. The optimal setting obtained was 3500 rpm spindle speed, 300 mm/min feed rate, and 0.2 mm depth of cut, which produced the lowest surface roughness and acceptable MRR. The confirmation experiment validated the Taguchi model prediction with an error of less than 5%. These findings demonstrate that the Taguchi method is an effective tool for optimizing CNC machining parameters of bipolar plates, improving both quality and manufacturing efficiency.
Co-Authors Ade Andri Hendriadi Adhes Gamayel Alam, Zezero Meo Cahaya Asep Apriana, Asep Hamdan Hariyanto Handaya, Devi Haqqi, Akmal Nafsa Ulya Ishardita Pambudi Tama Jaman, Jajam Haerul Kasum Kasum Kasum Kasum Kasum Kasum, Kasum M. N. Mohammed Maladzi, Radhi Mangatar, Adrian Matsaany , Bayun Mohamad Zaenudin Nabila Yudisha Rahman, Fio Izzafur Ramadhan, Bilal Ridha, Azhari Ali Risfi, Muhammad Prasha Septa Firdaus, Ahmad Ray Sugiono Sugiono Surna Tjahja Djajadiningrat