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All Journal Jurnal Teknik Mesin Indonesia Scientific Journal of Mechanical Engineering Kinematika
Sunardi
Universitas Sultan Ageng Tirtayasa
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Efek panas pada besi dan stainless steel 304 untuk penyaring udara mesin incinerator Agung Sudrajad; Muhammad Rafli Gumay Putra; Sunardi
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (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.v18i1.417

Abstract

Particulate matter in the environment can give a bad effect to the body of human through the respiratory process. These conditions require researchers to innovate to reduce the air pollution. The electrostatic precipitator (ESP) filter system is one technology for reduce of particulate matter by the combustion of Incinerator. This system has a good efficiency and very good in reducing of particulate matter produce by Incinerator. The materials used for the ESP system air filter in this study were iron and Stainless Steel 304. The tests carried out were the corrosion rate test, and X-Ray Diffraction (XRD) where the corrosion rate of the material will be measured using the weight loss method and seen the content and elements involved. changed using XRD. The results shows that the corrosion rate test, iron has a corrosion rate decrease of 66% and Stainless Steel 304 by 73%.. The Scanning Electron Microscope (SEM) EDX results show that after heating both specimens have the same ferrite pearlite phase but for iron specimens, pearlite is more dominant, and stainless steel 304 is more dominant in ferrite. While for the XRD results, there are wave changes on the graph of the iron and stainless steel 304 specimens before and after being heated, which means that there are differences in the phase of the two specimens.
PENGARUH FRAKSI VOLUME DAN ARAH SERAT TERHADAP KETANGGUHAN IMPAK DAN KEKUATAN BENDING PADA MATERIAL KOMPOSIT SERAT TANDAN KOSONG KELAPA SAWIT Jefri Aldo; Sunardi; Mekro Permana Pinem; Jefri Aldo
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 2 (2025): SJME Kinematika Desember 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i2.747

Abstract

Natural fiber-based composite materials are becoming an environmentally friendly alternative that continues to be developed due to their abundant availability, light weight, and low production costs. This study aims to determine the effect of volume fraction and fiber direction on the mechanical properties of empty oil palm fruit bunch (OPEFB) fiber-based composites, particularly impact toughness and flexural strength. The composite manufacturing process was carried out experimentally using hand lay-up and compression molding methods. OPEFB fibers were used as reinforcement and polyester resin as matrix, with the addition of MEKPO catalyst at 1% of the resin volume. Composites were varied based on fiber volume fraction (20%, 30%, and 40%) and fiber direction (0°, 45°, and 90°). Impact toughness testing was carried out using the Izod method referring to ASTM D256, while flexural strength was tested using the three-point bending method (ASTM D790). The results showed that a 30% volume fraction with a 0° fiber direction produced the highest flexural strength of 95.7 MPa, while a 40% volume fraction with a 45° direction showed the highest impact toughness of 28.1 kJ/m². Increasing the fiber volume fraction above 30% decreased the flexural strength due to fiber agglomeration. The 0° fiber direction was optimal for flexure, while 45° was most effective for absorbing impact energy.
Co-Authors Agung Sudrajad Jefri Aldo Jefri Aldo Mekro Permana Pinem Muhammad Rafli Gumay Putra