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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN Journal of Mechanical Engineering Science and Technology STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen Agroteknika Mechanical Engineering for Society and Industry Automotive Experiences Journal of Fibers and Polymer Composites Medani : Jurnal Pengabdian Masyarakat Jurnal Polimesin
Salahuddin Junus
Teknik Mesin Fakultas Teknik Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Transportation

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PENGARUH VARIASI KONSENTRASI PREKURSOR TERHADAP KARAKTERISASI NANOPARTIKEL ZINC OXIDE DENGAN METODE SOL-GEL Rahman, Purnama Auliya; Junus, Salahuddin; Hardiatama, Intan; Nashrullah, M Dimyati; Nurdiansyah, Haidzar
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 1 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Nanomaterial research, especially in the field of experimentation, cannot be separated from characterization or measurement activities, with characterization we can be sure that the synthesized material meets the nanostructure criteria, one of which is nanometer-sized. In this study we will characterize ZnO nanomaterials from the sol-gel method. Sol-gel is a chemical method that changes the state of the sol (liquid) into a gel state which is then after treatment and the transition to solid oxide material. Zinc Oxide nanoparticles are made with variations in the precursor of Zinc Acetate Dyhidrate 0.3 M and 0.1 M produce crystalline nanomaterial sizes of 157-123 nm. The crystal lattice parameters obtained are a = 3.2714 Å and c = 5.2121 Å and structural characterization revealed a single phase of ZnO with hexagonal wurtzite structure. For the average particle size of Zinc Oxide nanoparticle produced is 86,64-12,60 nm and the morphological form of ZnO nanoparticles produced is spherical and particles agglomerate. The final results show that the increase in the variation of the Zinc Acetate Dyhidrate precursor will increase both the crystal size and the size of the particles produced.
The Combustion Characteristics of Calophyllum inophyllum Fuel in the Presence of Magnetic Field Sugara, Imam Rudi; Ilminnafik, Nasrul; Junus, Salahuddin; Kustanto, Muh Nurkoyim; Hermawan, Yuni
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i12023p028

Abstract

The study objective is to investigate the combustion characteristics of Callophyllum inophyllum fuel in presence of a magnetic fields. To conduct the experiment, a bunsen burner was utilized, with fuel and air being dispensed via a syringe pump and compressor, both regulated by a flowmeter. The fuel and air pipes were heated to 532.15 (K) to facilitate fuel evaporation. The equivalent ratio of 0.5, 1, and 1.5 was adjusted to control air discharge and fuel. An 11,000 gausses artificial magnet was used, with N-S, N-S, N-N, and S-S being the various magnetic pole configurations. The study found that the magnetic field can enhance combustion quality by affecting the molecules involved in the combustion process. The magnetic field's force also intensifies the movement of O2, making it more energetic. As O2 travels from the North Pole to the South Pole through the combustion reaction zone, it quickens the oxidation-reduction process and curtails diffusion combustion. The red color's intensity diminishes with the magnetic field's effect, indicating this phenomenon. When a magnetic field is applied, the polarity of C.inophyllum biodiesel fuel becomes highly favorable. The triglyceride carbon chain bonds become unstable, and the van der Walls dispersion forces are weakened, which facilitates easier O2 binding to the fuel, resulting in more efficient combustion. An increase in the laminar burning velocity value can be noticed when exposed to a magnetic field.
ANALISIS VARIASI LUASAN HEATSINK TERHADAP UNJUK KERJA MODUL GENERATOR TERMOELEKTRIK (TEG) MEMANFAATKAN PANAS BUANGAN KONDENSOR KULKAS Wiradika, Yudha; Ilminafik, Nasrul; Junus, Salahuddin; Hardiatama, Intan; Nashrullah, M Dimyati
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Heat energy is generally only used by humans for heating an object and then heat wastefully into the environment without being converted into other energy. This study aims to find out how to utilize waste heat from 6U type refrigerator condensers by using thermoelectric generator modules. This study uses an experimental method that is used to compare the performance of a thermoelectric generator to convert waste heat from a condenser to a variation of 120cm2, 96cm2, and 72cm2 heatsink area. In the study taken every 5 minutes for 2 hours this results in a declining value. The variation of the 120cm2 heatsink area produces a temperature difference of 12.4oC - 9.4oC, the output power is 0.00119 Watts - 0.00072 Watts, and produces an efficiency of 0.014% - 0.011%. In testing the variation of 96cm2 heatsink area, it produces a temperature difference of 8.1oC - 5.3oC, the output power is 0,00055 Watt - 0,00025 Watt, and produces an efficiency of 0,010% - 0,007%. In testing the variation of the 72cm2 heatsink area it produces a temperature difference of 6.9oC - 4.5oC, the output power is 0,00042 Watts - 0,00019 Watts, and produces an efficiency of 0.009% - 0.006%. Of the three variations of the heatsink area that have been tested, the variation of the 120cm2 heatsink area produces the best results compared to other heatsink area variations.
Nanofiber Cellulose as New Generation Natural Materials for Biocomposite Filler Asrofi, Mochamad; Pradiza, Revvan Rifada; Abduh, Muhammad; Junus, Salahuddin; Alahmadi, Mohammed
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.217

Abstract

Cellulose, a ubiquitous and renewable biopolymer, has garnered significant attention for its potential in material applications. This overview highlights the properties and applications of cellulose nanofibers, a nanoscale form of cellulose with exceptional properties. Cellulose nanofiber exhibits high surface area-to-volume ratios, inherent crystallinity, and favorable mechanical properties. They can be extracted from various sources using chemical and mechanical treatments, including alkali treatment, bleaching, acid hydrolysis, and ultrasonication. These processes effectively reduce cellulose fibers to the nanoscale, enhancing their properties. Cellulose nanofiber has demonstrated significant potential as reinforcing agents in biocomposites, improving interfacial adhesion, homogeneity, and mechanical strength. Their applications extend to diverse sectors, including biomedicine, packaging, and 3D printing. In biomedicine, Cellulose nanofiber show promise in tissue engineering, drug delivery, and wound healing due to their biocompatibility. Their lightweight yet strong nature and biodegradability make them ideal for sustainable packaging solutions. Moreover, cellulose nanofiber serves as effective reinforcing agents in composites, enhancing the mechanical properties of polymers for applications in automotive and aerospace industries.
Moisture Characteristics of Biocomposites from PVA/Cassava Starch Reinforced by Lemon Peel Fiber Pradiza, Revvan Rifada; Junus, Salahuddin; Asrofi, Mochamad; Ilyas, Rushdan Ahmad
Journal of Fibers and Polymer Composites Vol. 4 No. 1 (2025): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v4i1.218

Abstract

This study reports the moisture absorption and surface morphological characteristics of Polyvinyl Alcohol (PVA) and cassava starch biocomposite with lemon peel fiber as reinforcement. Biocomposite is produced by film casting method. The addition of lemon peel fiber decreases moisture absorption properties. The lowest moisture absorption is 53,37 % for PVA/Cassava starch with 4% lemon peel fiber. This result is much lower than PVA and PVA/starch. Good adhesion of interfacial bonding and the compact structure of the biocomposite thus reduce the moisture absorption. From these results, the created biocomposite can serve as an environmentally friendly alternative.
Tensile and morphological properties of carbon-coir fiber reinforced epoxy hybrid composites Salahuddin Junus; Yayang Saif Izzudin; Aris Zainul Muttaqin; Danang Yudistiro; Mochamad Asrofi; Sumardi Sumardi; Puranggo Ganjar Widityo; Revvan Rifada Pradiza
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.5523

Abstract

This study reports the tensile and morphological properties of carbon fiber-reinforced epoxy composites  with the addition of coconut coir fiber. The composites were fabricated using the vacuum infusion method with coconut fiber weight fractions of 5%, 15%, and 25%. Tensile testing revealed that the highest tensile strength (70.92 MPa) was achieved at 15% fiber content, while 5% fiber content resulted in the lowest tensile strength (32.48 MPa). Scanning Electron Microscopy (SEM) and metallographic analyses showed variations in fiber-matrix bonding, with debonding and fiber pull-out observed at lower fiber content. The results suggest that optimal fiber-matrix bonding and fiber dispersion contribute to tensile strength enhancement, confirming the potential of coconut fiber-reinforced hybrid composites for structural applications
Co-Authors Achmad Murdiono Afril Priyanto Agung Budi C Agung Budi Cahyono Agus Pramono Agus Triono Ahmad Adib Rosyadi Ahmad Al Kautsar Ahmad Al Kautsar Ahmad Wafi Alahmadi, Mohammed Alfi Hasan Andi Sanata Andi Sanata Anne Zulfia Anuary Dwi Rosyid, Wafa Prasetia Aris Zainul Muttaqin Aris Zainul Muttaqin Bambang Sugiharto Danang Yudistiro Dedi Dwi Laksana Dedi Dwilaksana Deny tomy andrianto Devita Amelia Digdo Listyadi, Digdo Dwi Djumhariyanto Gaguk Jatisukamto Gindeka Bimara Aryantaka Haidzar Nurdiansyah Hary Sutjahjono Ilminafik, Nasrul Ilyas, Rushdan Ahmad Imam Rudi Sugara Imam Sholahuddin Imam Sholahudin Intan Hardiatama Jannah, Betriqil Koekoeh KW, Robertoes L Rajeshkumar Lilis Mariani Lilis Mariani, Lilis M Edoward Ramadhan M Trifiananto M. Fahrur Rozy M. Fahrur Rozy Hentihu m. Fahrur Rozy R M. R. M. Asyraf M.Ginanjar Widodo Mukti Mahros Darsin Masfeya Eka Hermiansyah Melbi Mahardika Melisa Melisa Mochamad Asrofi Mochammad Edoward R Mohammad Alfian Ilmy Muh Nurkoyim Kustanto Muh Nurkoyim Kustanto Muhammad Abduh Muhammad Kurniawan Nashrullah, M Dimyati Nasrul Ilminnafik Nasution, Annio Indah Lestari Novi Nur H Novi Nur Hamimah Pieter Muhammad Iko Marrendra Pradiza, Revvan Rifada Puranggo Ganjar Widityo Puranggo Ganjar Widityo R. A. Ilyas Rahma Rei Sakura Rahman, Purnama Auliya Rahmatullah Tites Wicaksono Ramadhan, M Edoward Reza Marinanda Fajar Rika Dwiqoryah Riko Septian Riko Septian Rizky Akhmad Prayogi Robertoes Koekoeh KW Robertus Sidartawan Robertus Sidhartawan Santoso Mulyadi Setyo Pambudi Setyo Pambudi Sujito Sujito Sumardi Sumardi Sumarji Syuhri, Skriptyan Noor Hidayatullah Taufik Taufik Wiradika, Yudha Wisnu Kuncoro Yanuar Alditya Nugraha Yayang Saif Izzudin Yudhistiro, Danang Yuni Hermawan