Article Per Year (5 Year)
p-Index From 2021 - 2026
2.127
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Mesin JURNAL KAJIAN TEKNIK MESIN Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Konversi Energi dan Manufaktur Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat Fakultas Teknik: Jurnal Abditek Metalik: Jurnal Manufaktur, Energi, Material Teknik
Ahmad Lubi
Universitas Negeri Jakarta
Aerospace Engineering Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Effect of Furnace Heating Temperature on the Hardness and Corrosion Resistance of Plain Carbon Steel Sopiyan Sopiyan; Syaripuddin Syaripuddin; Syamsuir Syamsuir; Fuad Ansori; Muhammad Yunan Hasbi; Ahmad Lubi; Ferry Budhi Susetyo
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 3 (2025): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v7i3.466

Abstract

Microstructure modification of the plain carbon steel usually enhances hardness and corrosion resistance. Therefore, in the present research, the microstructure of plain carbon steel is modified by heating it in an electric furnace using various temperatures and then quenching it in engine oil to enhance corrosion resistance and hardness. Several characterizations were conducted, such as microstructure, hardness, and electrochemical behavior. The microstructure evolution indicates a clear transformation of martensite morphology with decreasing austenitizing temperature. Decreasing the furnace's heating before quenching could increase the specimens' hardness and corrosion resistance, with values around 586.36 HV and 0.135 mmpy. Therefore, the optimal heat treatment condition for plain carbon steel components in marine environments was found at 800 °C based on the results of this study.
Effect of NaCl Concentration in Quenching Medium on Microstructure, Hardness, and Corrosion Behavior of AISI 4140 Steel Syaripuddin; Sopiyan; Rany Anggraini; Adi Tri Tyassmadi; Silalahi Jose Jan Filder; Muhammad Dhafa Irziansyah; Syamsuir; Ahmad Lubi; Muhammad Fatihuddin; Reza Febriano Armas; Ferry Budhi Susetyo
Jurnal ASIIMETRIK Jurnal Ilmiah Rekayasa & Inovasi Volume 8 Number 2 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i2.9970

Abstract

AISI 4140 steel is widely used in engineering and marine components due to its high strength and good hardenability. However, improving hardness through heat treatment may influence the corrosion behavior of the material in chloride containing environments. This study investigates the effect of NaCl concentration as a quenching medium on the microstructure, hardness, and corrosion behavior of AISI 4140 steel. The samples were austenitized at 1000 °C for 15 minutes and quenched in NaCl solutions with concentrations of 3.5%, 7%, and 10.5%. Microstructural observations were carried out using optical microscopy after etching with 3% Nital. Hardness testing was performed using the Vickers method with a 10 kg load, while corrosion behavior was evaluated using weight loss measurements and electrochemical tests in 3.5% NaCl solution. The results show that increasing NaCl concentration produces a finer martensitic structure and increases hardness from 673 VHN at 3.5% NaCl to 762 VHN at 10.5% NaCl. However, the corrosion rate also increases from 0.3688 mmpy to 0.3990 mmpy, indicating higher electrochemical activity at the material surface. These results demonstrate a trade-off between improved hardness and reduced corrosion resistance with increasing NaCl concentration.
Design, Finite Element Analysis, and Experimental Validation of a Jig Holder for SinglecDisc Metallographic Polishing Machines Ahmad lubi; Niko Ade Saputra; Ferry Budhi Susetyo; Danar Hari Krisyono; Ichsan Arfan Timur; Reza Febriano Armas; Muhammad Fatihuddin
Jurnal Rekayasa Mesin Vol. 21 No. 2 (2026): Volume 21, Nomor 2, Agustus 2026
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

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

Abstract

Specimen stability during metallographic polishing is critical to obtaining accurate microstructural observations, yet inconsistent pressure in single disc polishing machines often causes non-uniform surface finish and unreliable results. While previous studies have extensively addressed polishing parameters and machine performance, limited attention has been given to auxiliary fixtures that actively maintain specimen stability and pressure consistency, a gap this study addresses. This paper proposes a novel jig holder design that integrates finite element-based structural verification with experimental validation, offering a more consistent alternative to conventional manual polishing. The design methodology comprised requirement analysis, three-dimensional CAD modeling, structural simulation via finite element analysis (FEA) to evaluate von Mises stress, displacement, and factor of safety (FOS), followed by fabrication and experimental testing on Aluminum 6061 specimens under polishing loads of 50 g and 150 g, with manual polishing as a baseline. FEA results confirmed the structural safety of the jig holder, with a maximum von Mises stress of 0.103 MPa and a minimum factor of safety of 10. Experimentally, the jig holder consistently produced lower and more uniform surface roughness (0.220–0.225 μm) than manual polishing (0.235 μm), indicating that consistent, controlled pressure distribution rather than operator dependent manual force is the primary mechanism improving surface quality. These findings demonstrate that the proposed jig holder offers a practical, low cost solution for improving specimen preparation reliability in metallographic laboratories, with potential application in quality sensitive materials characterization workflows.
Co-Authors Adi Tri Tyassmadi Ahmad Kholil Anggi Kusuma Ardi Candra Fatkhurrohman Calfin Aldo Maidi Frima Candra Wahyu Setyawan Daffa Abiyyu Muhammad Rizq Danar Hari Krisyono Fuad Ansori I Wayan Sugita Ichsan Arfan Timur Ilhamullah Jodi Wilman Tantono Kautsar Raihananto Lingga Fatahillah Albir Mohammad Rizqi Dwi Febrianto Muhammad Dhafa Irziansyah Muhammad Fatihuddin Muhammad Yunan Hasbi Niko Ade Saputra Oktaviani, Maya Ragil Sukarno Rani Anggarainy Rany Anggraini Reynaldi Ramadhan Reza febriano Armas Silalahi Jose Jan Filder Sopiyan Sopiyan Sopiyan Sugeng Priyanto Susetyo, Ferry Budhi Syamsuir Syamsuir Syamsuir Syaripuddin Syaripuddin Tegar Firman Pamungkas Yunita Sari