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All Journal Jurnal Rekayasa Mesin Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Bahan Alam Terbarukan
Tezara Cionita
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Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Journal : Advance Sustainable Science, Engineering and Technology (ASSET)

 1 
Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk Etanto Heiliano Wijayanto; Imran, Al Ichlas; Siregar, Januar Parlaungan; Mohd Ruzaimi Mat Rejab; Tezara Cionita; Wisnu Prayogo; Deni Fajar Fitriyana; Rozanna Dewi; Thomas Junaedi; Agustinus Purna Irawan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2052

Abstract

This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples based on tensile strength (19.58 MPa), tensile modulus (1.70 GPa), flexural strength (44.55 MPa), and flexural modulus (2.32 GPa). On the other hand, CH 30 wt.% contributed the highest hardness value of 50.33 HRB compared to other samples. The findings in this study prove that the appropriate composition will affect the compatibility between the filler and the matrix, thus impacting the mechanical properties of the composite. This phenomenon can be seen based on microscope analysis, which shows a strong interaction between the matrix and filler and the formation of voids and agglomeration
Effect of Natural Fiber Stacking Sequence on the Properties of Hybrid Composites for Drone Frame Applications Janiviter Manalu; Jefri Bale; Khristhoper Aris Arianto Manalu; Frans Augusthinus Asmuruf; Fitriyana, Deni Fajar; Nizar Alamsyah; Januar Parlaungan Siregar; Al Ichlas Imran; Tezara Cionita; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2048

Abstract

The present study highlights the effective utilization of waste fibers in structural composites for drone frame applications, offering a sustainable pathway for developing high-performance materials while simultaneously addressing the issue of textile waste pollution. This study investigates the effect of ramie and cotton fiber waste fabric stacking sequences on the physical and mechanical properties of composites for quadcopter drone frames. Waste fabric was selected as an eco-friendly material to address textile pollution. The composites were fabricated using the hand lay-up technique with a 3:1 epoxy resin to hardener ratio, incorporating five layers of fabric in different configurations. The physical and mechanical properties, including density, water absorption, material hardness, flexural strength, and macro photography, were tested. The results showed that the composite made from fully cotton fabric (K-K-K-K-K) had the best density (1.182 g/cm³), lowest water absorption (2.22%), highest hardness (85.6 HD), and flexural strength of 179.1 MPa. These findings indicate that cotton fabric waste is a promising, sustainable material for composite reinforcement in quadcopter drone frame applications.
Co-Authors Achmad Erlangga Bintang Samodra Agustinus Purna Irawan Al Ichlas Imran Etanto Heiliano Wijayanto Fitriyana, Deni Fajar Frans Augusthinus Asmuruf Imran, Al Ichlas Janiviter Manalu Januar Parlaungan Siregar Jefri Bale Junaedi, Thomas Khristhoper Aris Arianto Manalu Manalu, Janviter Mochamad Marte Ardhianto Mochammad Marte Ardianto Mohd Ruzaimi Mat Rejab Natalino Fonseca Da Silva Guterres Nizar Alamsyah Nugroho, Rizky Fajar Putra, Naufal Bahy Rahmat Doni Widodo Rozanna Dewi Samsudin Anis Siregar, Januar Parlaungan Wisnu Prayogo