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Ozkar F Homzah
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Lantai 2, Gedung Jurusan Teknik Mesin, Politeknik Negeri Sriwijaya, Jl. Srijaya Negara Bukit Besar Palembang 30139, Indonesia.
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INDONESIA
AUSTENIT
ISSN : 20851286     EISSN : 26227649     DOI : https://doi.org/10.53893/austenit
AUSTENIT (pISSN 2085-1286 and eISSN 2622-7649) is a peer-reviewed open access journal published by Mechanical Engineering Department, Politeknik Negeri Sriwijaya. Focused on original articles in the form of technical and vocational research results or literature review which provides insight in the field of mechanical engineering and machinery that includes Mechanical Structure, Manufacturing, Metallurgy Sciences and Engineering, Design Engineering, Maintenance and Repair Engineering, Fluid Dynamics, HVAC (Heating, Ventilation and Air Conditioning), Heat-Mass Transfer, Sustainable Renewable Energy, Mechatronic and Control Systems or as well as other related Mechanical Engineering field study.
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Articles 225 Documents
KOMUNIKASI DUA ARAH MODUL PENGENDALI MOTOR ALAT TRIAXIAL DIGITAL Saputra, Hendri Maja; Saputra, Ivan Heru; A.H.B.Baskoro, Catur Hilman
AUSTENIT Vol. 13 No. 2 (2021): AUSTENIT: Oktober 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

This study aims to apply two-way communication module for motor controller on digital triaxial test equipment. In the triaxial digital test equipment, the speed and direction of up / down motors in the previous version is still manually controlled by pressing the push button on the control panel. In this research is done digitalize all process at control panel, so that all activity of control tool can be done in front of computer. The communication between the computer and the digital triaxial test device uses a serial communication directly connected to the motor controller module, where the computer sends only characters that will be processed by the microcontroller. The microcontroller translates characters sent, processed, and gives commands to be forwarded to displays and motors. Testing is done directly using Gerlink Triaxial application on computer. Based on some test results obtained that the character sent by the computer can move and change the speed of the motor, and rearrange the loadcell readings on triaxial test equipment. The data rate sent each character is 1.04 milliseconds each.
ANALISA KEKASARAN PERMUKAAN HASIL PEMOTONGAN PADA BAJA SS400 MENGGUNAKAN MESIN CNC PLASMA CUTTING DENGAN PENGARUH VARIASI KUAT ARUS DAN KETINGGIAN TORCH Malik, Irawan; Mardiana, Mardiana; Abelleo Recxa Abdi Asshydiq
AUSTENIT Vol. 13 No. 2 (2021): AUSTENIT: Oktober 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

Tujuan dari penelitian ini adalah untuk mengetahui seberapa besar nilai kekasaran permukaan hasil pemotongan menggunakan alat CNC plasma cutting dengan pengaruh variasi kuat arus dan ketinggian torch dalam pemotongan baja SS400. Metode penelitian yang digunakan adalah metode eksperimen dengan tujuan untuk mengetahui pengaruh sebab akibat terhadap perlakuan yang diberikan. Variasi kuat arus yang digunakan dalam proses pengujian pemotongan adalah 30A, 33A & 36A dan variasi tinggi torch adalah 3mm, 5mm & 7mm dilakukan pemotongan berbentuk persegi dengan ukuran 50mm x 50mm. Hasil penelitian yang diperoleh menunjukkan adanya pengaruh antara kekuatan arus dan ketinggian torch pada proses pemotongan menggunakan mesin CNC plasma cutting. Nilai kekasaran terendah diperoleh pada penggunaan arus 33A dengan ketinggian torch 5mm sebesar 1,309 µm. Nilai kekasaran tertinggi diperoleh pada penggunaan arus 36A dengan ketinggian torch 7mm sebesar 3,561 µm. Penelitian ini dapat disimpulkan bahwa adanya pengaruh variasi kuat arus dan ketinggian torch pada proses pemotongan baja SS400 menggunakan mesin CNC Plasma Cutting.
Coverage Vol 13 No 2 Redaksi
AUSTENIT Vol. 13 No. 2 (2021): AUSTENIT: Oktober 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

AUSTENIT sebagai media untuk menjembatani hasil riset terapan dan vokasional berupa karya ilmiah dari tulisan-tulisan hasil penelitian atau kajian pustaka para Akademisi, Peneliti, Praktisi, Profesional dan Mahasiswa yang belum pernah diterbitkan dalam media lain di bidang ilmu Teknik Mesin dan Permesinan yang meliputi bidang kajian Perancangan dan Rekayasa Produk, Konversi Energi, Teknik Metalurgi dan Sains, Kontruksi, Teknik Perawatan dan Perbaikan Mesin, Energi terbaru dan keberlanjutan, serta Mekanisasi-Kontrol. Pada Volume 13 Nomor 2 terdapat 5 artikel, yang ditulis dari Peneliti Lembaga Ilmu Pengetahuan Indonesia (LIPI), Praktisi Industri dari PT. Gerlink Utama Mandiri, serta Akademisi dari Universitas Bangka Belitung, Politeknik Negeri Indramayu, Universitas Sultan Ageng Tirtayasa, Universitas Masoem dan Politeknik Negeri Sriwijaya. Setiap artikel Ilmiah yang dimuat pada AUSTENIT telah diseleksi oleh dewan redaksi dan telah melewati tahapan single blind reviewer oleh Mitra Bestari yang kompeten dibidangnya.
RANCANG BANGUN ALAT VACUUM FORMING UNTUK PENGEMASAN PRODUK Zamheri, A.; Seprianto, Dicky; Eka F, Yogi; Wilza, Romi; W, Soegeng; Shiddiq, M Hadzik; Pasa, Doni Ahmad; Ryan Bagaskara, Kgs. Muhammad
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4240

Abstract

The use of plastic is now very much in human life today. The nature of plastic is easy to form, light, strong, rust-resistant, as a good electrical insulator and of course has a high economic value, this is what makes the use of plastic more and more even replacing the use of metal, wood and glass. This study aims to design and manufacture a vacuum forming packaging device using PET with a pressure of 10 kPa. The method used is the thermo forming method. Vacuum forming is the simplest method. Parameters selected to indicate the quality of the plastic mold include the type of plastic, heating temperature and pressure. As the material to be tested is plastic type of polyethylene terephthalate (PET) measuring 55.5 cm x 61.5 cm with a thickness of 0.30 mm, The heating temperature is set at a constant temperature of 200.
DISAIN ALAT PENEPAT PENGELASAN KIT PEMADAM KEBAKARAN Wilza, Romi; Novarika, Wirda; Rasid, M.; Herlambang, Yusuf Dewantoro; Arifin, Fatahul; Ikbal, Muhammad; Hadi, Kms. M.
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4397

Abstract

Fire is a disaster that no one wants. Fires can occur anytime and anywhere, one of which is offices, buildings, warehouses, and even forests. Fires in buildings can cause losses in both material and non-material properties. To extinguish the fire, you need supporting equipment, for example a Fire Extinguisher Kit (FEK), which is a fire hose reel. To produce this tool, a production aid is needed in terms of gripping the workpiece that will be used as a fire fighting kit product. Fire Hose Reel production aids are production workpiece holder tools that are used in order to make accurate doubling of components to get good work results in production, of course there should be compatibility in terms of the position of the workpiece with the machine used. The fixing device is used which is designed to position, hold, and support each part so every welding performed is within the specified limits. In the process of designing and manufacturing, this Welding Tool for Production of FEK uses software to calculate the load that these production aids can withstand and for the manufacturing process tools such as cutting grinders, drilling machines and other bench work tools are used. This tool can withstand the weight of objects up to 50 kg. with a deflection of 0.055 mm.
ANALISA PENGARUH KEMIRINGAN SUDUT SCREW EXTRUDER PADA PROSES PEMBUATAN FILAMENT 3D PRINTER PADA MESIN EKSTRUSI SINGLE SCREW Rasid, Muhammad Rasid; Suparjo, Suparjo; Tafrant, Dodi; Homzah, Ozkar F.; Ma’arif, Syamsul
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4445

Abstract

The purpose of this research is to calculate the effect of the screw extruder angle on the results of 3-dimensional printer filaments that are printed using a single screw extrusion machine. The machine parameters used in this study were: pull speed 16 rpm, extrusion speed 28 rpm, extrusion mold diameter of 2 mm, and temperature of 180oC. The material used is recycled HDPE plastic. While the tilt angle of the screw in the research conducted by providing 5 variants of the angle of inclination (0o, 10o, 15o, 20o, 25o) where the diameter of the screw shaft used is the same. Data analysis was carried out using a simple linear regression method. Where the results obtained were: 1) the smallest filament diameter was 0.9 mm when using a screw with an angle of 0o, and 2) the highest diameter was 1.86 mm when using a screw with an angle of 25º. The conclusion obtained is that the tilt angle of the helical screw affects the results of recycled HDPE plastic extrusions, where the effect of the screw angle tilt is directly proportional to the filament diameter. In other words, with the addition of the tilt angle of the screw, the diameter of the resulting filament will also increase. In addition, based on the results of measuring the diameter of the filament, the conclusion that can be drawn is that with the increase in the diameter of the extrusion result, the outflow obtained will also be greater.
Analisa Analisa Kapasitas dan Kebutuhan Daya Listrik untuk Mengoptimalkan Penggunaan Energi Listrik di Gedung G4 Universitas Negeri Malang: Pengoptimalan Energi Listrik Gedung G4 Universitas Negeri Malang Sujito, Sujito; Dwi Mardika, Ainur Rohmatika; Nugroho, Zory Satrio
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4490

Abstract

In general, the lighting needed in the building is indoors and outdoors. The building lighting must be turned off when not in use to suit the needs. Therefore, the design of the lighting system in the building must be equipped with a switch on the lamp. In this study, a lighting system automation tool in the building was made to shorten the time in the process of turning on the lights, thus humans do not need to manually switch. The lighting system automation in the building is made using several components, namely Arduino nan, RTC (Real Time Clock), light sensor modules, relays, and PIR (Passive Infrared Receiver) motion sensors. After testing the tools made, the results can be seen, namely, the building lighting in the room will light up at night when there is human activity and light up during the day when there is not enough light and there is human activity. Furthermore, the lighting outside the building will only turn on at night and turn off during the day.
Rancang Bangun Mesin Pengiris Tempe Otomatis Dengan Pengaturan Ketebalan Hendriko, Hendriko; Hura, Menti Diana; Jaenudin, Jajang; Rahmawaty, Made; Khamdi, Nur
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4521

Abstract

Tempe is a traditional Indonesian food that can be processed into various derivative food products, including chips and mendoan. Many MSMEs have developed tempe chip products, but the tempe slicing process is still done manually. The manual process has the disadvantage of taking a long time, requiring operators, and inconsistent results. In this study, an automatic tempe slicing machine was developed. The developed machine uses a control system so that it can adjust the thickness of the slices by manipulating the rotational speed of the driving motor. The mechanical design of the tempe pushing system and hopper causes the process to take place continuously. Tests to determine the performance of the machine in producing tempe slices, and to determine the capacity of the machine have been carried out. The results show that the machine can slice tempe well starting from a thickness of 2 mm. The test results also show that the deviation of the thickness of the slices is not significant, which is between -2.2% - 2.5%. Machine capacity depends on the thickness of the slices. For 3 mm slices, the machine capacity is 22 29 kg/hour. Meanwhile, the machine capacity for slice thickness of 5 mm and 7 mm is 31.85 kg/hour and 38.96 kg/hour, subsequently.
PERFORMANCE ANALYSIS OF LiVO3-Ion BATTERY WITH CARBON (Ipomoea Aquatica) AS ANODES Sucia, Arini; Haryati, Sri; Syarif, Nirwan
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4559

Abstract

This research was conducted by utilizing water spinach which is found in swampy areas as new material for support in battery. Water spinach stems were separated used as carbon precursor. The carbon was prepared through hydrothermal and pyrolysis processes.  The battery was constructed using the carbon anode  and cathode from  LiVO3. The LiVO3 was produced by using hydrothermal process of LiCl, V2O5, and NaOH in 200ºC 30 bar for 16 hours. The performance of the battery was evaluated using cyclic voltammetry and galvanostatic charging – discharging methods on potentiostat. The electrolyte used was LiCl in liquid or gel electrolyte with concentrations of 10%, 20% and 40%, respectively. The binders were used PU and melamine. Material characterization reveal that the carbon has crystaline phase, conductivity and pores which therefore carbon has the capability to be used as anode precursor. The evaluation of battery performance showed that the highest current value was found in battery with 40% LiCl of liquid electrolyte and  polyurethabe binder, that is 0.22 A. The highest power 5.36 x   W, energy 1.80 x  Wh, and capacity  ​8.94 x  F  was found in battery with 40% LiCl of liquid electrolyte with binder PU.. The lowest battery discharge slope 0.0039 was found in 40% LiCl of liquid electrolyte with PU binder. These findings provides an alternative to the use of materials in Lithium ion batteries without compromising the performance of their application.
KAJI EKSPERIMEN MODEL 3D RODA GIGI HELIKS BERBASIS SCRIPT MENGGUNAKAN SOFTWARE AUTODESK FUSION 360 Setiawan, Haris; Pratama, Andri; Rina, Rina; Diratama, Mohammad Yazid
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4561

Abstract

Pemodelan 3D suatu produk adalah salah satu elemen yang penting dalam proses manufaktur. Tujuan dari penelitian ini adalah membuat pemodelan 3D roda gigi heliks berbasis script menggunakan softtware Autodesk Fusion 360® lalu membandingkannya dengan model 3D standar ISO T.E.A nomor part 0518. Metoda penelitian yang digunakan adalah kaji eksperimen. Penelitian dimulai dengan pembuatan script tipe A yang memiliki face (bidang gambar) tegak lurus dengan bidang XY. Sedangkan script tipe B menggunakan face yang tegak lurus dengan kurva heliks roda gigi. Profil roda gigi pada kedua script dibentuk dengan menggunakan fitur loft. Jumlah face yang di analsis berjumlah 3,5 dan 7 serta jumlah titik pada spline involute profil roda gigi adalah 5, 15 dan 25. Selanjutnya model roda gigi 3D yang dibuat dengan script A dan B akan dianalisis dan dibandingkan terhadap 3D roda gigi heliks standar ISO T.E.A nomor part 0518 berdasarkan volume serta geometrinya menggunakan software solidwork® dan geomagic®. Hasil analisis menunjukkan bahwa 3D model hasil script tipe A yang berisi jumlah face 7 merupakan model yang paling menyerupai model standar roda gigi heliks ISO T.E.A nomor part 0518, sedangkan 3D model hasil script tipe B yang berisi jumlah face 3 merupakan model yang paling menyerupai model standar roda gigi heliks ISO T.E.A nomor part 0518. Berdasarkan batas toleransi yang ditetapkan, 3D model hasil script tipe A dan B sudah memenuhi standar toleransi umum.

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