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All Journal Jurnal Teknologi METAL : Jurnal Sistem Mekanik dan Termal Journal Of Chemical Process Engineering J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Ansyari, Muhammad Fadhillah
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Optimization of Polypropylene-Based Polymer Composites Fabrication Using Manual Forming for Automotive and Energy Applications Ansyari, Muhammad Fadhillah; Utami, Yovi
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1453

Abstract

Polypropylene (PP)-based polymer composites are widely used in the automotive and energy industries due to their lightweight, strong, and corrosion-resistant properties. This study aims to optimize the fabrication process of polymer composites using the manual forming method, focusing on the effect of pressure and heating time on the material's mechanical properties. The materials used include polypropylene as the matrix and glass fibers as reinforcement. The process parameters varied include pressure (150–200 kgf/cm²) and heating time (10–20 minutes). Mechanical tests were conducted using a Universal Testing Machine (UTM) for tensile testing and an Izod Impact Tester for impact testing, following ASTM D638 and ASTM D256 standards. The results show that optimal pressure and heating time produced specimens with an average tensile strength of 35.3 MPa and impact energy absorption of 0.45 Joules. Although close to industry standards, uneven pressure distribution and air voids affected material homogeneity. In conclusion, the manual forming method can improve the quality of polymer composites for industrial applications, but further process parameter optimization is required to enhance material consistency.
Karakterisasi dan Optimasi Orientasi Serat Twisted TKKS untuk Meningkatkan Sifat Mekanik pada Komposit ABS Daur Ulang Ansyari, Muhammad Fadhillah; Rahayu, Puspita; Topandi, Abdussalam; Prayudie, Untung
J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Vol. 9 No. 2 (2025): J-Proteksion
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jp.v9i2.2752

Abstract

Penggunaan ABS daur ulang pada komposit semakin populer untuk mengurangi limbah plastik, namun kelemahan sifat mekanik menjadi tantangan utama. Penelitian ini bertujuan meningkatkan sifat mekanik ABS daur ulang dengan menggunakan serat Twisted Tandan Kosong Kelapa Sawit (TKKS) sebagai penguat. Serat TKKS diproses melalui alkalisasi menggunakan NaOH 5% dan dibuat menjadi komposit dengan orientasi serat 0°, 90°, dan 0/90° menggunakan metode manual forming. Pengujian meliputi kuat tarik, kekuatan impak, dan stabilitas termal melalui uji DSC. Hasil menunjukkan bahwa orientasi serat 0/90° memberikan sifat mekanik terbaik dengan kuat tarik sebesar 28,75 MPa, energi impak 25,55 kJ/m², dan stabilitas termal tertinggi pada suhu 251,5 °C. Optimasi orientasi serat dan perlakuan alkalisasi terbukti efektif dalam meningkatkan performa komposit ABS daur ulang.
Studi Regenerasi Silika Gel Biru dan Putih sebagai Adsorben Etanol-Air untuk Mendukung Pengembangan Biofuel di Industri Polimer dan Otomotif Ansyari, Muhammad Fadhillah; Aryanti, Fitria Ika; Salsabila, Tasya
Jurnal Teknologi Vol. 12 No. 2 (2025): Jurnal Teknologi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/jtek.v12i2.315

Abstract

Abstrak Bioetanol adalah sumber energi terbarukan yang menjanjikan karena dapat diproduksi dari bahan yang kaya karbohidrat dan limbah alam yang murah serta mudah didapatkan. Teknologi pemisahan campuran etanol-air meliputi distilasi lanjutan, pervaporasi, dan adsorpsi. Adsorpsi efektif untuk memurnikan bioetanol dengan biaya yang efisien dan menghasilkan kemurnian yang tinggi. Silika gel sebagai adsorben merupakan salah satu bentuk silika yang diperoleh dari proses penggumpalan sol natrium silikat (NaSiO2). Permukaan silika mengandung gugus-gugus SiOH dan SiOSi yang bersifat polar. Penelitian ini mengkaji efek regenerasi adsorben pada pemurnian campuran etanol-air menggunakan adsorpsi kontinu pada unggun tetap. Adsorben silika gel diregenerasi dengan pemanasan oven pada suhu 115°C hingga 130°C. Tujuan penelitian ini adalah memperoleh data rasio konsentrasi etanol yang keluar dan masuk ke dalam kolom, yang kemudian ditampilkan dalam kurva breakthrough. Hasil penelitian menunjukkan bahwa adsorben silika gel yang diregenerasi memiliki waktu efektif dan penetrasi lebih cepat dibandingkan silika gel baru. Konsentrasi etanol untuk silika gel biru pada konsentrasi awal 50% adalah 62,50%, dan pada konsentrasi awal 10% adalah 26,50%. Hasil ini lebih baik dibandingkan silika gel putih yang menghasilkan konsentrasi 62,10% pada konsentrasi awal 50% dan 23,50% pada konsentrasi awal 10%. Keywords : Adsorption, bioethanol, ethanol-water, regeneration, silica-gel
Tailored Polyurethane Composite Foams for Automotive and Biomedical Applications: Influence of Polyol–Isocyanate Ratios on Density, Texture, and Formation Time Ansyari, Muhammad Fadhillah; Utami, Yovi
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 2 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.2.89-101.2025

Abstract

Polyurethane (PU) composite foams have gained significant attention in both the automotive and biomedical industries due to their lightweight structure, tunable mechanical properties, and excellent thermal and acoustic insulation. This study examines how varying the polyol–isocyanate ratio (1:1, 2:3, and 3:2) influences the physical characteristics of PU foams, particularly density, texture, and formation time. Using a batch mixing and molding process, three formulations were synthesized and evaluated. The foam with a 2:3 ratio produced a rigid structure (density: 0.045 g/cm³), suitable for automotive applications such as vibration dampening and structural interior panels. In contrast, the 3:2 ratio resulted in a soft, flexible foam (density: 0.047 g/cm³), which may be applicable in biomedical cushioning, prosthetics, or pressure-relieving supports. The 1:1 ratio generated a semi-rigid foam with the lowest density (0.032 g/cm³), indicating potential use in hybrid comfort–support systems. Formation times ranged from 7.18 to 15 minutes. The results demonstrate that the mechanical and physical properties of PU foams can be customized by adjusting the reactant ratios, enabling their application across multiple sectors. This study provides a foundational understanding of formulation–property relationships for PU composites and supports their integration into energy-efficient vehicles and human-centered biomedical devices.
Co-Authors Fitria Ika Aryanti Rahayu, Puspita Salsabila, Tasya Topandi, Abdussalam Untung Prayudie, Untung Utami, Yovi