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All Journal Jurnal Energi Dan Manufaktur Jurnal Teknik Mesin Indonesia Jurnal Teknik Mesin Sinergi
Ahmad Nurul Muttaqin
Politeknik Negeri Ujung Pandang
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering

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Sifat Mekanis & Struktur Mikro Aluminium Paduan (Al-Si) Pada Pengecoran Dengan Menggunakan Cetakan Berputar Uswatul Hasanah Mihdar; Ahmad Nurul Muttaqin
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4182

Abstract

This study aims to analyze the effect of variations in mold rotation speed and pouring temperature on the quality of casting aluminum alloy (Al-Si) which includes mechanical properties and microstructure. The selected speed variations are 200 rpm, 250 rpm, and 300 rpm. While the pouring temperature variations are 640oC, 660 oC, and 680 oC. The tests carried out were the hardness test and tensile test as well as a photo of the structure micro to be used to calculate the average grain size. The highest hardness value is found at 300 rpm with a temperature of 680 oC of 81.42 HB, while the lowest hardness value is found at 200 rpm with a temperature of 640 oC of 77.9 HB. The highest tensile strength is found at 300 rpm with a temperature of 660 oC 236.52 N/mm2 and the lowest tensile strength is at 250 rotations with a temperature of 680 of 171.92 N/mm2. The lowest average grain size value is found at 300 rpm rotation with a temperature of 680oC of 87.1781 µm, while the highest average grain size value is found at 200 rpm rotation with a temperature of 640 oC of 139.951 µm.
Volume Kerja dan Waktu Penggilingan Tongkol Jagung pada Ukuran Produk/ Morfologi dalam Proses Ball Mill Ahmad Nurul Muttaqin; Uswatul Hasanah Mihdar
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4203

Abstract

The use of corncob powder is very wide in various industrial fields, namely as a source of dietary fiber, the basic material for making bio-plastics, partial replacement of cement in the manufacture of concrete, functional chemicals, oyster mushroom cultivation media. The most efficient method in producing corncob powder is the Ball Mill Process. The purpose of this study was to evaluate the effect of working volume and milling time on the characteristics of corn cob powder. The research procedures include specimen preparation (including cutting and drying processes) and milling processes. The results obtained were then characterized using a scanning laser microscope (LSM) to analyze the morphology and size of the product, lower working volume results in a smaller powder production with a needle-like sharp edge morphology and a higher work volume also results in a powder that has a blunt edge morphology. Although working volume can potentially be used to control particle size, this parameter has a direct effect on powder yield. As for the long milling time, it produces a smaller powder size than the faster milling time. 
Optimalisasi dan pengembangan mesin penggembur tanah inovatif untuk meningkatkan produktivitas lahan kering Ahmad Nurul Muttaqin; Uswatul Hasanah Mihdar; Rusdi Nur
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.449

Abstract

The creation of a soil-loosening device that works well on dry terrain is the goal of this study. With this equipment, perhaps, human labor in construction and agriculture will be reduced and productivity will rise. In the machine assembly process, virtual assembly is carried out using Autodesk Fusion 360 software prior to the actual assembly phase. During assembly, the mounting frame for the combustion engine is joined to the main frame. Furthermore, sprockets are mounted on the two axles and wheels, and belt tensioners are added. This machine's blade is used to swiftly loosen the dirt. An area of thirty square meters was tested by machines on dry land, and each test took an average of 229.3 seconds to complete. The machine's time efficiency is greater than that of the earlier variants. In addition, factors including longevity, running costs, simplicity of maintenance, and environmental effect need to be carefully considered in this study. This development tool has a great deal of potential to improve the efficiency and productivity of the dry land soil loosening process. The research findings are expected to contribute to technological advancements in Indonesia's building and agriculture sectors.
Revolusi dalam Pemecahan Biji Kemiri: Pengembangan Mesin Pemecah Kulit Kemiri yang Efektif dan Efisien Ahmad Nurul Muttaqin; Uswatul Hasanah Mihdar; Rusdi Nur
Jurnal Energi Dan Manufaktur Vol 6 No 2 (2023): Oktober 2023
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2023.v16.i02.p03

Abstract

Penelitian ini bertujuan untuk merevolusi proses pemecahan biji kemiri melalui pengembangan mesin pemecah kulit kemiri yang efektif dan efisien. Dalam rangka mencapai tujuan ini, mesin pemecah kulit kemiri yang ada mengalami modifikasi dan peningkatan yang signifikan. Menggunakan software Autodesk Fusion 360, desain mesin pemecah kulit kemiri yang baru dirancang dengan cermat. Kemudian, komponen-komponen mesin diproduksi dan dirakit sesuai dengan rencana yang telah ditetapkan. Dalam fase pengujian, biji kemiri yang telah mengalami penjemuran dalam waktu berbeda, yaitu 12, 24, 48, dan 96 jam, digunakan untuk menguji performa mesin. Hasil pengujian menunjukkan prestasi yang menakjubkan. Mesin pemecah kulit kemiri yang dimodifikasi mampu mencapai tingkat pemecahan biji yang lebih baik daripada sebelumnya. Dalam penelitian ini, berhasil dicapai persentase pecah utuh sebesar 59%, menandakan peningkatan signifikan dalam kualitas pemecahan biji kemiri. Keberhasilan pengembangan mesin ini membawa dampak positif yang luar biasa dalam industri pertanian dan pengolahan biji kemiri. Mesin pemecah kulit kemiri yang baru mampu meningkatkan efektivitas dan efisiensi dalam pemecahan biji kemiri, membantu petani dan pengusaha dalam proses produksi mereka. Potensi mesin ini untuk digunakan dalam skala produksi yang lebih besar sangat menjanjikan. Dalam kesimpulannya, pengembangan mesin pemecah kulit kemiri ini telah membuktikan keunggulannya dalam meningkatkan kualitas pemecahan biji kemiri. Dengan menggunakan bahan pemecah yang lebih optimal dan penyesuaian kecepatan putaran piring pelempar, mesin ini telah berhasil menghasilkan pemecahan biji kemiri yang lebih baik daripada sebelumnya. Penelitian ini memberikan solusi praktis dan efisien dalam proses pemecahan biji kemiri, berpotensi meningkatkan produktivitas dan keuntungan para pelaku industri.
Co-Authors Hairul Arsyad Onny Sutresman Rusdi Nur Uswatul Hasanah Mihdar