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All Journal Turbo : Jurnal Program Studi Teknik Mesin JEECAE (Journal of Electrical, Electronics, Control, and Automotive Engineering) Jurnal Teknik Mesin
Marfizal Marfizal
Sekolah Tinggi Teknologi Nasional
Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Optimasi Multi Respon Parameter Proses Injection Molding Material Biokomposit Menggunakan Metode Taguchi - PCR TOPSIS Sufiyanto; Marfizal Marfizal; Lilia Trisyathia Quentara; Alfi Tranggono Salim
JEECAE (Journal of Electrical, Electronics, Control, and Automotive Engineering) Vol. 6 No. 2 (2021): JOURNAL OF ELECTRICAL, ELECTRONICS, CONTROL, AND AUTOMOTIVE ENGINEERING (JEECAE
Publisher : Pengelolaan Penerbitan Publikasi Ilmiah (P3I) Politeknik Negeri Madiun

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Abstract

Pengaturan parameter proses injection molding sangat berpengaruh terhadap kulitas produk hasil cetakan, diantaranya kualitas sifat mekanis pada kekuatan tarik dan impak. Pengaturan parameter untuk polimer jenis termoplastik sudah banyak direkomendasikan oleh perusahaan pembuat mesin injection molding, sedangkan pada material Polimer Matrix Composite (PMC) yang menggunakan serat alam disebut dengan biokomposit masih belum banyak digunakan. Pada penelitian ini biokomposit yang digunakan adalah campuran polypropylene, maleic anhydride polypropylene dan serbuk sekam padi. Perlu adanya eksperimen yang mengoptimasi parameter proses injection molding untuk memperoleh sifat mekanis yang optimal pada material hasil cetakan. Parameter yang divariasikan pada penelitian ini terdiri dari 4 faktor dan masing-masing faktor terdiri dari 3 level. Dengan menggunakan metode Taguchi diperoleh desain eksperimen menggunakan matriks ortogonal L27. Untuk memperoleh respon kekuatan tarik dan impak secara simultan maka digunakan metode PCR TOPSIS. Dari hasil optimasi multi respon PCR TOPSIS diperoleh parameter proses injection molding yang optimal untuk kekuatan tarik dan impak secara simulatan adalah: barrel temperature 215°C, injection pressure 60 bar, holding pressure 45 bar, dan injection velocity 65 mm/s.
Comparison of Propeller Turbine Performance Using Airfoil Blades and Without Airfoil Marfizal Marfizal; Dedi Wardianto; Sufiyanto Sufiyanto
Jurnal Teknik Mesin Vol 12 No 1 (2022): Jurnal Teknik Mesin Vol.12 No.1 April 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i1.11-16

Abstract

Electricity is a strategic energy resource and is very important for the livelihood of many people. The government has tried to free Indonesia from the electricity crisis and is trying to find alternative uses of new and renewable energy (EBT). The government has committed that NRE will continue to be developed to ensure energy security in Indonesia and meet the growing demand for electricity. The government has set a target of 23% share of clean energy in the national energy mix in 2025 and 31% in 2030 through the National Energy Policy (KEN) and the General National Energy Plan (RUEN). To succeed the government program is to take advantage of the potential energy sources that exist around people's residences. However, one of the obstacles is the remote location so that access is difficult. In addition, the village community lacks knowledge about microhydro technology. Therefore it is necessary to design a turbine that is not complicated to manufacture. The complexity is in the manufacture of turbine blades which must be aerodynamic and affect performance. Therefore, it is necessary to do research on turbine blades that are not aerodynamic and how they perform. This research was conducted experimentally using a propeller turbine and tested on 3 different types of blades, namely, in this study three types of blades were created and designed. The aerodynamic cross-section blade and the square cross-section blade with a thickness of 3 mm without curvature, the blade with a rectangular cross-sectionsquare with a thickness of 2 mm with curvature (camber). which is made of steel plate manufacture by welding. The turbine blade diameter used is 150 mm with a total of 4 blades.
Investigasi tegangan kerja pada pisau pencacah di mesin shredder-extruder dalam satu penggerak utama menggunakan Metode Elemen Hingga Adriyan Adriyan; Sufiyanto Sufiyanto; Marfizal Marfizal
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 1 (2023): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2269

Abstract

Plastic flakes from shredding processes are produced by tearing plastic wastes using shredder blades. During the shredding process, tear forces are the source of loading acting on the tip of the shredder blades. Hence, this research is performed to investigate the working stresses on the blades when subjected to the tear forces during the shredding process. Thus, the working stresses on those blades can be computed by applying the finite element method. In this research, the blades are modeled by two kinds of finite elements, namely the triangular plane stress element and tetrahedron element, with linear shape functions. As a result, the maximum stresses on the blades lie within the range of 49 to 52 MPa for both models. These maximum working stress are below the yield strength of the material used for manufacturing those blades, i.e.: ASTM A36 with 250 MPa of yield strength. Overall, it can be concluded that there are no significant discrepancies in the computed working stresses among the blades.
Co-Authors Adriyan, Adriyan Alfi Tranggono Salim Lilia Trisyathia Quentara Sufiyanto Sufiyanto Sufiyanto