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Muslimin Muslimin
Department Of Mechanical Engineering, Politeknik Negeri Jakarta, Jl. Prof. G. A. Siwabessy, Kampus UI, Depok 16425, INDONESIA
Automotive Engineering Computer Science & IT Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Parameter Arus Discharge dan Elektroda Terhadap Nilai MRR Pada Proses Sinker EDM Material AISI Lisbhet Engelita; Darius Yuhas; Muslimin Muslimin
Jurnal Mekanik Terapan Vol 1 No 1 (2020): Mei 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v1i1.3332

Abstract

Electrical Discharge Machining (EDM) adalah proses permesinan non-konvensional yang menggunakan energi thermal berupa loncatan bunga api listrik bertemperatur tinggi 10.000˚C-12.000˚C di antara pahat dan benda kerja sebagai media pemotongannya. Proses EDM digunakan untuk pemotongan material yang sangat kuat dan keras. Proses EDM menghasilkan kepresisian tinggi untuk bentuk produk yang rumit dan kualitas permukaan yang baik. Proses EDM dipengaruhi oleh material yang diproses, material elektroda, arus discharge, tegangan, pulse on time (PON), pulse off time (POFF), spark gap, cairan dielektrik dan sebagainya. Kombinasi parameter tersebut akan menghasilkan karakteristik hasil pemotongan yang berbeda-beda. Penelitian ini bertujuan untuk mencari kombinasi parameter optimum proses EDM punches dari bahan AISI 316. Variable bebas penelitian adalah arus discharge (12A, 21A, 30A) dan elektroda (Tembaga dan Graphite). Variabel tetap yang digunakan PON 120 µs, POFF 3 µs, tegangan 45 V, cairan dielektrik CPC kerosene, material AISI 316, jenis mesin EDM sinker SKM EDM Politeknik Negeri Jakarta. Variable kontrol yaitu nilai MRR. Berdasarkan penelitian, nilai MRR tertinggi 0.775 gram/min dan terendah 0.175 gram/min. Parameter arus discharge dan elektroda merupakan variable yang paling berpengaruh terhadap nilai MRR.
Pengaruh Tekanan Compression Moulding terhadap Kinerja Pelat Bipolar Komposit Grafit/Resin Epoksi Komposisi 20% Karbon Tempurung Kelapa Uswah Hasanah; Muslimin Muslimin
Jurnal Mekanik Terapan Vol 1 No 1 (2020): Mei 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v1i1.3335

Abstract

Compression moulding atau yang sering dikenal sebagai teknik untuk membuat produk komposit yang bervariasi, merupakan metode dengan molding tertutup. Prinsip prosesnya adalah dengan menerapkan tekanan ke bagian cetakan (mold), lalu mesin mengendalikan panas dari heater agar dapat membentuk bahan sesuai dengan cetakan ketika ditekan. Dibutuhkan penelitian hasil dari desain compression molding yang bisa digunakan untuk industri rumahan atau UKM (Usaha Kecil Menengah). Pada penelitian dibuat bahan pelat bipolar komposit berkomposisi grafit sintetis 60%, carbon black tempurung kelapa 20% dengan perekat resin epoksi yang diberikan variasi penekanan sebesar 15 MPa, 18 MPa, 20 MPa pada temperatur 135˚C menggunakan compression moulding selama 4 jam. Hasil Pengujian menunjukkan adanya pengaruh tekanan terhadap kinerja pelat bipolar komposisi 20% karbon tempurung kelapa. Terjadi peningkatan konduktivitas, densitas dan kuat lentur jika penekanan yang diberikan semakin tinggi. Namun, terjadi penurunan porositas apabila tekanan semakin tinggi.
Rancang Bangun Mesin Press Caulking dan Stacking Shaft Yoke dan Sleeve Yoke Katerina Mukti; Muslimin Muslimin
Jurnal Mekanik Terapan Vol 1 No 2 (2020): November 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v1i2.3359

Abstract

Rancang bangun mesin press caulking dan staking ini bertujuan untuk membuat alat bantu produksi proses press caulking dan staking pada proses pembuatan shaft yoke dan sleeve yoke. Selain itu, rancang bangun ini juga bertujuan untuk mengurangi cost production pengadaan shaft yoke dan sleeve yoke yang selama ini di import dari luar negeri. Metode yang digunakan dalam rancang bangun ini yaitu Quality Function Deployment (QFD) yang meliputi pendekatan sistimatik untuk mengetahui dan menentukan permintaan konsumen kemudian menerjemahkan permintaan tersebut secara teknis dengan cara mengembangkan konsep desain, perencanaan proses manufacturing, dan perencanaan produksi yang tepat. Mesin press caulking dan staking ini menggunakan silinder hidrolik dengan nilai tonase sebesar 45 ton. Produk shaft yoke dan sleeve yoke yang telah mengalami proses press akan melalui tahapan pengujian berupa uji kebocoran (leaking test), pull test, cutting test, dan pengamatan macrostructure untuk mengetahui hasil proses pengepresan.
Optimalisasi Proses Manufaktur Pipa Koil Menggunakan Mesin Bubut Konvensional Sholeh Mochammad; Muslimin Muslimin; M. Rizki Fadillah
Jurnal Mekanik Terapan Vol 2 No 2 (2021): November 2021
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v2i2.4313

Abstract

Salah satu komponen utama dengan jumlah dan keragaman  sangat banyak adalah koil pipa tembaga, banyak digunakan pada industri kecil, menengah maupun besar dalam pembuatan condensor kulkas, AC mobil, AC Rumah, Tabung destilasi, peralatan fogging dan masih banyak lagi penggunaan dari koil pipa tembaga ini. Dengan banyaknya penggunaan ini mendorong masyarakat untuk bisa turut membuat menggunakan peralatan sederhana yaitu memanfaatkan mesin bubut konvensional sebagai pemintal atau  penggerak utamanya. Sering dijumpai proses pembuatan yang kurang memperhitungkan aspek teknis maka muncul kerutan atau wrinkling yang mengurangi kemampuan pengaliran fluida didalamnya. Penelitian ini dimaksudkan untuk mengetahui pengaruh antara diameter pipa tembaga dengan ukuran diameter mandrel yang dipergunakan. Dalam penelitian ini variasi yang digunakan ketebalan dan diameter pipa serta diameter mandrel sehingga dapat diketahui optimalisasi proses manufaktur pipa koil menggunakan mesin bubut konvensional.  Disini diperoleh kesimpulan bahwa, semakin tipis pipa semakin besar  kerutan dan semakin kecil diameter mandrel juga akan makin besar munculnya kerutan atau wrinkling. Penelitian akan memberikan hasil yang lebih baik lagi jika diketahui secara pasti komponen unsur pembentuk pipa tembaga yang dipakai, karena kandungan unsur pembentuk mempengaruhi kemampuan pembentukan coil tembaga itu sendiri.
IMPLEMENTASI PERANCANGAN PERANGKAT LUNAK UNTUK KENDALI DAN MONITORING MESIN VACUUM FORMING OTOMATIS Hasvienda M. Ridlwan; Sonki Prasetya; Pribadi Mumpuni Adhi; Muslimin Muslimin; Sugeng Mulyono
JTIK (Jurnal Teknik Informatika Kaputama) Vol 4, No 1 (2020): VOLUME 4 NOMOR 1, EDISI JANUARI 2020
Publisher : STMIK KAPUTAMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.657 KB)

Abstract

Implementation of software design for vacuum forming machines is the focus of this paper. This vacuum forming machine will be used for small and medium industries (IKM) in food in Indonesia, where the packaging process is essential. Packaging materials in the food business are polystyrene plastic (PS) and polyvinyl chloride (PVC), which are generally sold freely in specific sizes. The problem that arises in SMEs is the packaging that does not fit, both the size and shape of the product. On the other hand, small-scale packaging machines are still quite expensive in terms of cost because the machines do not originate domestically. Therefore, an IKM scale Vacuum Forming machine with economical costs is needed for the IKM business. Testing software for vacuum forming machines has been running using Labview and Arduino by utilizing serial USB communication with NI-Visa. The experimental results of the designed system have been successfully implemented to the sensors and actuators via the Arduino Uno, indicating that temperature control can stabilize the heat after 3 minutes of heating. Meanwhile, the software that has been designed has been successfully implemented on LabView can monitor and help operators to use the machine easily. Keywords: vacuum forming, food industry, automatic, LabView, pvc.
2D Mapping Lingkungan Indoor Menggunakan Lidar dan ROS untuk Mobile Robot Hasvienda Mohammad Ridlwan; Sonki Prasetya; Muslimin Muslimin
Jurnal Mekanik Terapan Vol 3 No 2 (2022): Agustus 2022
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v3i2.4285

Abstract

Currently, the application of control systems has been applied in various scientific fields including mechatronics and robotics. Applications in the branch of robotics are also growing day by day not only with conventional controls but also with intelligent systems. An autonomous robot in carrying out certain missions in an unknown environment requires information about the location itself and the environment through the map. A process to identify a position without a map is called a localization function on the robot. Mobile robots building maps and localization are two fundamental tasks when mobile robots work in indoor environments. With 2D laser scanning (LiDAR) data obtained in real-time, the robot can calculate the area of ​​all empty spaces in a room, then can choose the center of the room as its position for map building. The objective of this research is to implement a two-dimensional mapping method using LiDAR. The algorithm used in this study is the Gmapping Technique on ROS. The main purpose of this research is to map mobile robots with LIDAR sensors using the Robot Operating System for navigation and positioning of mobile robots. Through the actual experimental results, the mobile robot will move with a 2-dimensional mapping process.
STUDI KINERJA HANDHELD PORTABLE 3D SCANNER DALAM PENGUKURAN DIAMETER DAN KEDALAMAN LUBANG PADA SPESIMEN LOGAM Anang Wahyu Setiawan; Muslimin Muslimin; Ghany Heryana
Jurnal Teknologi Terapan Vol 9, No 1 (2023): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v9i1.420

Abstract

A Handheld portable 3D Scanner is an optical-based tool that can be gripped by hand and moved from one place to another. This tool is used to scan part’s surface and produce a 3-dimensional representation in the form of a point cloud. The use of 3D Scanners has grown significantly in recent years, especially in applications in the metrology, industrial manufacturing inspection, and reverse engineering. Apart from the ease of use and flexibility of use, as an optical-based tool with triangulation principles, Handheld Portable 3D Scanners have limitations in scanning the geometric shape of a narrow hole or slit. The specifications published by the manufacturer do not fully describe tool’s performance  in this regard. For this reason, an evaluation of the performance of the Handheld Portable 3D Scanner is carried out by determining the error of measuring holes on the workpiece with variations in depth and diameter. As a reference value, the results of the Coordinate Measuring Machine –CMM measurement are used. . The study result show that handheld 3D scanners generally have an error in measuring the diameter and measuring the depth of the hole, above the specification of 0.03 mm. In holes with a diameter of 1 mm, the handheld 3D scanner has a relationship between the error of measuring hole’s diameter and hole’s diameter with the regression equation: y=0.037x-0.54. En values categorized as "outliers" were found in holes with a diameter of 1 mm with a depth of 0.5, 1, 2, 4 mm and holes with a diameter of 2mm with a depth of 4 mm.
Design analysis of mold cavity and core on compression molding of composite material Muslimin Al Masta; Hasvienda M. Ridlwan; Dhiya Luqyana; Bayu Pambudi; Azam Milah Muhamad
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3311

Abstract

This study discusses the design analysis of compression molding cavity and core under 12 tons of pressure and 100oC heat using experimental analysis and Ansys R19.2 simulation. This compression mold is used to process composite materials, mainly thermoset matrix composites. The compression product is a tensile test specimen according to the ASTM D638-4 standard. The main concern of this study aimed to analyze the stress distribution and deflection due to the compression load and heat on the cavity and core of compression molding. Hence, the die construction is safe during the operation under these loads. The analysis was carried out using Von Mises's stress of static loading criteria. The research parameter examined are stress distribution, deflection, and some critical dimensions in the cavity and core. These parameters significantly affect mold performance, product quality, and service life. Experimental analysis shows that the maximum deflection of the cavity and the core is 4.40 x10-4 mm and 1.53 x 10−4 mm, respectively. On the other hand, Simulation analysis shows the maximum deflection of the cavity and core is 4.56 x 10−4 mm and 7.41 x 10-5 mm, respectively. The error between experimental analysis and simulation is 6.87 x 10-5 mm and 3.32 x 10-5 mm for the cavity and the core, respectively. For stress analysis, the maximum value is 37.94 MPa for both cavity and core. On the other hand, simulation analysis shows 262 MPa and 256 MPa for the cavity and core, respectively. Both experimental analysis and simulation show that the result complies with the standard, less than 0,025 mm for deflection, and stress is less than 1034 MPa for maximum stress. Therefore, compression mold structure is safely used.
The utilization of composite material: Water hyacinth and sugarcane bagasse fiber-epoxy for cool box thermal insulation Ivinia Muthia Anjani; Raden Grenny Sudarmawan; Noor Hidayati; Muslimin Muslimin
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 8 No. 1 (2023)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v8i1.28839

Abstract

Fish serves as the primary income source for the majority of fishermen in Indonesia. In order to preserve the freshness of the fish, fishermen commonly use styrofoam cool boxes. However, the use of styrofoam results in a significant quantity of waste that doesn't naturally break down. As a solution, a study was conducted to develop an alternative thermal insulation material for cool boxes. This material takes the form of a biocomposite, made from epoxy resin combined with water hyacinth and sugarcane bagasse fibers. The research’s results are A1 type had the lowest density value (0,795 g/cm3) and the lowest thermal conductivity value (0,1987 W/mK). The B3 type had the highest bending strength value (395,224 kg/cm2). All type of ratio variations’ density and bending strength test results are met the requirements of SNI 03-2105-2006. It can be concluded that A1 type is the best choice as a thermal insulation material purpose. After a cool box from composite (A1) manufactured, a comparison test between styrofoam cool box and composite cool box is being held. The 24-hour test result shows that styrofoam cool box still outperformed the composite cool box in terms of temperature maintenance.
Co-Authors Adhi, Pribadi Mumpuni Anang Wahyu Setiawan Azam Milah Muhamad Bayu Pambudi Darius Yuhas Dhiya Luqyana Ghany Heryana Hasvienda M. Ridlwan Hasvienda Mohammad Ridlwan Ivinia Muthia Anjani Katerina Mukti Lisbhet Engelita M. Rizki Fadillah Noor Hidayati Raden Grenny Sudarmawan Sholeh Mochammad Sonki Prasetya Sugeng Mulyono Uswah Hasanah