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All Journal Jurnal Teknik ITS SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN R.E.M (Rekyasa Energi Manufaktur) Jurnal Journal of Mechanical Engineering Science and Technology STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Dedikasi: Jurnal Pengabdian kepada Masyarakat Mechanical Engineering for Society and Industry PEKAT : Jurnal Pengabdian Kepada Masyarakat Medani : Jurnal Pengabdian Masyarakat
Rahma Rei Sakura
Teknik Mesin Fakultas Teknik Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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PENGARUH PARAMETER PEMESINAN BUBUT TERHADAP KEKASARAN PERMUKAAN PADA BAJA AISI 4340 Adha Mahendra, Erlian; Hermawan, Yuni; Triono, Agus; Rozy Hentihu, M. Fahrur; Sakura, Rahma Rei
STATOR: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 1 (2025): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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

Abstract

This research evaluates the influence of lathe machining parameters, such as spindle speed,cutting speed, and feed depth, on the surface roughness (Ra) on the wheel axle of an electric car madefrom AISI 4340 steel. Measurements were carried out using a TR220 surface roughness tester machine,which recorded the highest roughness of 10.107 μm and the lowest was 4.041 μm. The results showedthat feed speed contributed 51.24%, spindle speed 35.82%, and cutting depth 12.94% to surfaceroughness.The optimal combination of machining parameters to produce a surface with low roughness is aspindle speed of 770 m/min, a cutting depth of 0.5 mm, and a feed speed of 120 mm/s. Small infeed depths are ideal for producing smooth surfaces, but compromises may be necessary for production efficiency. In addition, high cutting speeds provide optimal results if heat and tool wear can be controlled. Optimizing these parameters is critical to improving product quality, performance and lifetime.Keywords: Surface Roughness, AISI 4340 Steel, Lathe Machining
Chemical Modification of Petung Bamboo Fiber to Hybrid Composites: Modifikasi Kimia Serat Bambu Petung terhadap Komposit Hibrida Yusron Maulana, Raden Muhammad; Rahma Rei Sakura; Nasrul Ilminnafik; Sumarji; Mahros Darsin
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v10i2.1768

Abstract

This study evaluates the effect of alkali treatment using NaOH solution on the mechanical properties and microstructure of hybrid composites based on epoxy resin reinforced with petung bamboo fiber and fiberglass. Bamboo fibers were immersed in five NaOH concentration variations (0%, 3%, 6%, 9%, 12%) before composite fabrication using the hand lay-up method. Tensile testing was performed according to ASTM D-638 standard and microstructural characterization using Scanning Electron Microscope (SEM). The results showed that 9% alkali treatment produced the best mechanical performance with a tensile strength of 58.68 MPa, elongation of 4.15%, and elastic modulus of 1413.49 MPa. SEM analysis indicated improved fiber-matrix adhesion due to removal of lignin and hemicellulose. Optimal alkali concentration enhanced composite performance, making it a potential candidate for eco-friendly vehicle interior applications.
Co-Authors Adha Mahendra, Erlian Agus Triono Alfredo Bayu Satriya Amir Biqi Amirur Ridho Muhammad Andana, Himawan D Andi Sanata Anisya Delima Anuary Dwi Rosyid, Wafa Prasetia Ardhyananta, Hosta Bambang Sugiharto Chamim Handoyo Dani Darojat Iskandar Dedi Dwilaksana Digdo Listyadi, Digdo Dwi Djumhariyanto Eriska Eklezia Dwi Saputri FX Kristianta Gaguk Jatisukamto Gindeka Bimara Aryantaka Hary Sutjahjono Hayun Indra Nur Iman Hery Indria Dwi Puspita HT Prasetiyo, Dani Intan Hardiatama Istiqomah Rahmawati M Arief Hidayat M Asrofi M Dimyati Nashrullah M Nurkoyim Kustanto M. Fahrur Rozy Hentihu Mahros Darsin Mochamad Asrofi Mochamad Trifiananto Moh. Wafir Muhammad Katibi Vanhas Muhammad Trifiananto Nasrul Ilminafik Nasrul Ilminnafik Naufal Fardio Albajili Novel Bagas Satrio Wibowo Pratama Yuli Arianto Primaningtyas, Widya Emilia Puranggo Ganjar Widityo Putratama, Panji Hastawirata Riko Septian Ririn Endah Badriani, Ririn Endah Rizky Akhmad Prayogi Robertoes Koekoeh KW Robertus Sidartawan Rozy Hentihu, M. Fahrur Rudianto Rudianto Salahuddin Junus Santoso Mulyadi Suheni Suheni Sumarji Sumarji Syuhri, Skriptyan Noor Hidayatullah Taufik Taufik Tri Vicca Kusumadewi Wazirotus Sakinah Welayaturromadhona Yudhistiro, Danang Yuni Hermawan Yusron Maulana, Raden Muhammad Zainul M, Aris