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All Journal Jurnal Energi Dan Manufaktur JMPM (Jurnal Material dan Proses Manufaktur) Machine : Jurnal Teknik Mesin Manutech : Jurnal Teknologi Manufaktur Jurnal Teknik Mesin Indonesia JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Jurnal Teknik Mesin Sinergi
Uswatul Hasanah Mihdar
Politeknik Negeri Ujung Pandang
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology 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.
PENGEMBANGAN MESIN PEMISAH KULIT POLONG KACANG HIJAU UNTUK PENINGKATAN KAPASITAS DAN EFISIENSI PEMISAHAN BIJI Ahmad Nurul Muttaqin; Uswatul Hasanah Mihdar; Arfandy Arfandy
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.4519

Abstract

The objective of this study is to improve the quality and efficiency of the verification process which is crucial for processing green bean seeds by upgrading the green bean skin separating machine. This change entails improving engine rotation in addition to changing engine mechanics and parts. The engine was tested at 350 rpm, 425 rpm, and 500 rpm during the experimental phase. According to the data, 350 rpm is the ideal engine speed for separating green bean seeds from the pod skin, with a differential capacity of 54 kg/hour. When ninety percent of the green bean seeds are undamaged and out of the pod skin, they are combined with other components. This machine may serve as a commercial solution to improve the quality and efficiency of processing green bean seeds. These encouraging outcomes highlight how important technology is to the agro-industrial and agricultural sectors. By processing green bean seeds more effectively and of higher quality, technology may also assist the environment and the economy.
Optimalisasi produktivitas pengupasan biji kopi melalui modifikasi mesin pengupas Muttaqin, Ahmad Nurul; Mihdar, Uswatul Hasanah
Jurnal Teknik Mesin Indonesia Vol. 19 No. 1 (2024): 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.v19i1.537

Abstract

The aim of this research is to modify the coffee bean husking machine to enhance the quality and efficiency of the husking process. The modifications include the addition of a spring mechanism in the grinding space, enabling the outer roller to move flexibly in accordance with the size of the entering coffee beans. Furthermore, these changes also consider reducing the percentage of broken coffee beans during the husking process. The machine underwent two rounds of testing, with three samples tested under two different drying conditions. The research results demonstrate the success of the modifications in achieving their objectives. The machine's capability to husk coffee beans up to the parchment layer, not just the husk, indicates an improvement in the quality of the husking process. The quantity of successfully husked coffee beans also increased, while the percentage of broken beans decreased. By enhancing the quality and quantity of coffee beans produced by this machine, the modifications can significantly benefit coffee farmers. Additionally, this study utilized Autodesk Fusion 360 software to enable virtual assembly of machine components before physical production. The outcomes of the virtual assembly aided in understanding the machine's functionality and the interactions among its components. Therefore, the modifications to the coffee bean husking machine have assisted coffee farmers in producing higher-quality beans and expediting the coffee processing process.
Technology Updates on Plate Bending Machines with Hydraulic Systems Amrullah, Amrullah; Muttaqin, Ahmad Nurul; Mihdar, Uswatul Hasanah
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.22250

Abstract

The swift progression of industrial technology has profoundly influenced the manufacturing sector, especially in the domain of sheet metal manipulation. Hydraulic plate bending machines hold a pivotal role in contemporary production due to their precision in shaping sheet metal components. This study aims to elevate the versatility and efficiency of hydraulic plate bending machines through innovative modifications. Key components underwent substantial alterations, including punch substitution, installation of dual punch locking plates, and integration of a pressure gauge. An evaluation ensued to determine the optimal parameters duration and force requisite for bending sheet metals ranging from 1 mm to 4 mm in thickness, aimed at assessing machinery efficacy. Test outcomes unveiled the modified machine's adeptness in accurately bending sheets of varying thicknesses, affirming its intended functionality. Moreover, the machine's enhanced adaptability allowed for seamless interchangeability of punches with diverse sizes and shapes. These empirical findings provide invaluable insights for enterprises striving to streamline manufacturing processes and boost overall productivity. Notably, this study highlights the pivotal role of technological advances in hydraulic plate bending machines, offering firms an efficient avenue to cater to diverse sheet metal shaping demands, thereby amplifying productivity and adaptability in industrial operations.
Technology Updates on Plate Bending Machines with Hydraulic Systems Amrullah, Amrullah; Muttaqin, Ahmad Nurul; Mihdar, Uswatul Hasanah
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.22250

Abstract

The swift progression of industrial technology has profoundly influenced the manufacturing sector, especially in the domain of sheet metal manipulation. Hydraulic plate bending machines hold a pivotal role in contemporary production due to their precision in shaping sheet metal components. This study aims to elevate the versatility and efficiency of hydraulic plate bending machines through innovative modifications. Key components underwent substantial alterations, including punch substitution, installation of dual punch locking plates, and integration of a pressure gauge. An evaluation ensued to determine the optimal parameters duration and force requisite for bending sheet metals ranging from 1 mm to 4 mm in thickness, aimed at assessing machinery efficacy. Test outcomes unveiled the modified machine's adeptness in accurately bending sheets of varying thicknesses, affirming its intended functionality. Moreover, the machine's enhanced adaptability allowed for seamless interchangeability of punches with diverse sizes and shapes. These empirical findings provide invaluable insights for enterprises striving to streamline manufacturing processes and boost overall productivity. Notably, this study highlights the pivotal role of technological advances in hydraulic plate bending machines, offering firms an efficient avenue to cater to diverse sheet metal shaping demands, thereby amplifying productivity and adaptability in industrial operations.
Desain dan Pembuatan Tungku Krusibel Untuk Peleburan Logam Bukan Besi Kapasitas 5 Kg Dengan Bahan Bakar Gas Wetik, Fransisco Rivaldy; Damayanti, Irma; Aqsa, Muh Nur; Rasyid, Syaharuddin; Mihdar, Uswatul Hasanah
Jurnal Teknik Mesin Sinergi Vol 22 No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v22i2.5398

Abstract

Proses pengecoran logam (casting) adalah salah satu teknik pembuatan suatu produk dengan cara logam dicairkan dalam tungku peleburan lalu lanjut dituang ke dalam ruang cetakan yang serupa dengan bentuk asli dari produk coran yang akan dibuat. Penelitian ini akan dirancang dan dibuat tungku berbahan bakar LPG. Tungku gas ini nantinya dibuat dan diaplikasikan sebaga alat peleburan logam bukan besi, Pada proses rancang bangun tungku gas diawali dengan pembuatan sketsa tungku, perencanaan ukuran dari benda kerja, kemudian proses pembuatan gambar kerja, pemilihan material, dan proses pembuatan Setelah pembuatan akan dilakukan pengujian sehingga alat ini akan menjadi penunjang praktikum terkhusus pada mata kuliah teknologi manufaktur dan teknologi bahan masi jarang digunakan. Kebanyakan dosen mengajarkan secara verba kepada mahasiswa tanpa ada alat yang mendukung. Salah satu penyebabnya adalah tidak tersedianya alat tungku peleburan logam. Tujuan tugas akhir ini untuk menciptakan tungku krusibel untuk peleburan logam non ferro (Aluminium dan Kuningan) dengan kapasitas 5kg berbahan bakar gas.
Modifikasi Mesin Pencacah Plastik untuk Meningkatkan Kapasitas dan Kualitas Hasil Cacahan dalam Proses Daur Ulang Muttaqin, Ahmad Nurul; Mihdar, Uswatul Hasanah; Wirawan, Tri Susilo; Ariputra, A.; Halim, Abdul; Ilmunandar, Alief Maulana; Arfandy; Putra, Muhammad Sidiq Dwi; Abdillah, Muh.; Wicaksono, Ariawan Bayu; Ishak
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 01 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i01.180

Abstract

Sampah plastik menjadi masalah lingkungan global karena sulit terurai secara alami dan dapat mencemari air, tanah, dan udara. Untuk mengatasi masalah ini, proses daur ulang plastik menjadi solusi yang penting. Mesin pencacah plastik merupakan alat utama dalam daur ulang, namun banyak mesin yang masih menghadapi masalah dalam hal kapasitas dan kualitas hasil cacahan. Beberapa mesin pencacah plastik sebelumnya memiliki keterbatasan seperti ukuran cacahan yang besar dan ketidakstabilan dalam proses pencacahan. Tujuan penelitian ini adalah untuk mengembangkan mesin pencacah plastik dengan meningkatkan kapasitas dan menghasilkan cacahan yang lebih kecil dan seragam. Metode yang digunakan dalam penelitian ini adalah modifikasi desain mesin dengan mengganti sistem pemotongan menggunakan pisau dengan sudut kemiringan 45°, penambahan saringan, serta sistem pendinginan dengan pompa air untuk menghindari panas berlebih. Hasil penelitian menunjukkan bahwa mesin modifikasi mampu menghasilkan cacahan dengan ukuran rata-rata 7,7 mm x 6,4 mm dan kapasitas produksi 21,6 kg/jam. Mesin ini juga lebih efisien dengan waktu pencacahan rata-rata 2 menit 30 detik per 1 kg plastik, dibandingkan dengan mesin sebelumnya yang membutuhkan waktu 2 menit 48 detik. Kesimpulannya, mesin pencacah plastik yang dimodifikasi dapat meningkatkan efisiensi pencacahan dan menghasilkan cacahan plastik yang lebih kecil dan lebih seragam, yang mendukung proses daur ulang plastik yang lebih ramah lingkungan.
Co-Authors A Halim A. Ariputra A. Ariputra, A. Abdillah, Muh. Ahmad Nurul Muttaqin Amrullah Amrullah Aqsa, Muh Nur Arfandy Arfandy Arfandy Arfandy, Arfandy Ilmunandar, Alief Maulana Irma Damayanti ISHAK Putra, Muhammad Sidiq Dwi Rusdi Nur Syaharuddin Rasyid Wetik, Fransisco Rivaldy Wicaksono, Ariawan Bayu Wirawan, Tri Susilo