Akhyar Akhyar, Masri Ibrahim, Zulfan, Muhammad Rizal, Ahmad Riza, Ahmad Farhan, Iqbal, Muhammad Bahi, Aminur, Ully Muzakir
This experiment aimed to analyze the impact of different fiber sizes on cutting forces during the drilling of Natural Fiber-Reinforced Polymer Composites (NFRPC) while also evaluating surface quality attributes, including delamination, fiber pullout, and overhanging fibers, influenced by variations in coconut fiber dimensions within the NFRPC material. The manufacturing process for composite panels utilized various methods, including hand layup for 200 mm long coconut fibers and composite casting for shorter fibers (2, 4, and 6 mm) mixed with polymer-epoxy. The results indicate that panels made from NFRPC with continuous fiber lengths of 200 mm exhibit higher cutting force values (253,650 N) compared to epoxy panels without fibers (235,288 N), suggesting that a significant force is required to sever the continuous fibers within the NFRPC. Conversely, the incorporation of short coconut fibers measuring 2, 4, and 6 mm reduces the cutting forces on the composite panels. However, excessive surface roughness in the final hole quality can be detrimental, primarily due to issues of delamination and fiber pull-out. © 2024 The Authors
Department of Mechanical Engineering, Universitas Syiah Kuala, Jl. Syech Abdurrauf No. 7, Darussalam, Banda Aceh, 23111, Indonesia; Oil Palm and Coconut Research Center, Universitas Syiah Kuala, Darussalam, Banda Aceh, 23111, Indonesia; Department of Physic Education, FKIP Universitas Syiah Kuala, Darussalam, Banda Aceh, 23111, Indonesia; Department of Mechanical Engineering, Universitas Abulyatama, Banda Aceh, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Department of Mechanical Engineering, Universitas Halu Oleo, Indonesia; Universitas Bina Bangsa Getsempena, Indonesia
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