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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Journal of Metallurgical Engineering and Processing Technology
Syah, Citra Yurnidar
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analysis of Tensile and Bending Strength of Coconut Fiber Reinforcement Composite on Quasi Isotropic Laminates Stacking Sequence Aminur, Aminur; Saputra, Jaka Seru Dwi; Syah, Citra Yurnidar
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11350

Abstract

A composite is a material structure composed of two or more combinations of constituents combined macroscopically, where the two combinations do not dissolve each other. The first phase is called reinforcement, while the second phase is called matrix. This study aims to analysis the tensile and bending strength values of coconut fiber reinforced composites with a sequence of layers of quasi-isotropic fiber laminates. Experimental studies were carried out on polyester resin composites reinforced with coconut fiber in the fiber layer sequences of [0°/0°/0°], [+45°/0°/-45°] and [+60°/0°/-60°]. Tensile test specimen standards refer to ASTM D-3039 and bending test standards refer to ASTM D-7264. The results of the blistering test obtained a maximum stress of 18.3298 N/mm2 in the fiber layer sequence [0°/0°/0°] and a minimum stress of 10.8966 N/mm2 in the fiber layer sequence [+60°/0°/ -60°]. Meanwhile, the bending test results showed that the maximum bending stress was 76.065 N/mm2 in the fiber layer sequence [0°/0°/0°] and the minimum stress was 30.256 N/mm2 in the fiber layer sequence [+45°/0°/-45 °].
Perancangan dan Analisis Struktural Belt Konveyor Mesin Pengayak Pasir Tipe Rotary Berbasis Simulasi Autodesk Inventor untuk Meningkatkan Produktivitas Kadir, Abd; Badia, Bahdin Ahad; Putra, Muhammad Idris; Syah, Citra Yurnidar
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 12, No 1 (2026): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v12i1.14861

Abstract

Proses pengayakan pasir secara manual di industri konstruksi memiliki produktivitas rendah dan hasil yang tidak konsisten. Penelitian ini bertujuan untuk merancang belt konveyor mesin pengayak pasir tipe rotary dan menganalisis kekuatan struktural rangka menggunakan material aluminium 6061-T6. Metode penelitian meliputi perhitungan manual menggunakan teori mekanika teknik dan simulasi Finite Element Analysis (FEA) dengan software Autodesk Inventor 2020. Parameter yang dianalisis mencakup tegangan maksimum, regangan, displacement, dan faktor keamanan pada rangka mesin dengan beban operasi 4,165 N. Hasil perhitungan manual menunjukkan tegangan maksimum 71,126 MPa, regangan 0,001032, displacement 0,1912 mm, dan faktor keamanan 3,866. Hasil simulasi Autodesk Inventor memberikan tegangan maksimum 52,16 MPa, regangan 0,000635, displacement 0,4068 mm, dan faktor keamanan 5,272. Kedua metode menunjukkan deviasi 26,7% yang masih dalam rentang dapat diterima dan mengkonfirmasi bahwa rangka aman dengan faktor keamanan >3. Mesin yang dirancang mampu mengangkut dan menyaring pasir dengan kapasitas 5,7 ton/jam menggunakan motor listrik 2 HP, meningkatkan produktivitas 11-19 kali lipat dibandingkan metode manual (0,3-0,5 ton/jam). Kecepatan belt optimal 0,5 m/s dengan efisiensi pengayakan 92%. Desain ini telah tervalidasi dan siap untuk fabrikasi prototype.
Co-Authors Abd Kadir, Abd Aminur Aminur Jaka Seru Dwi Saputra Putra, Muhammad Idris