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All Journal Jurnal Penelitian Rumpun Ilmu Teknik
Raffi Akbar Trisnaputra
Universitas Singaperbangsa Karawang
Computer Science & IT Engineering

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Pengaruh Ukuran Mesh dan Komposisi Serbuk Sabut Kelapa terhadap Karakteristik Lentur Komposit Polyester-Serat Rami untuk Aplikasi Furnitur dan Otomotif Raffi Akbar Trisnaputra; Oleh Oleh; Nanang Burhan
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 5 No. 2 (2026): Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v5i2.7244

Abstract

Furniture and automotive industries require strong, lightweight, and environmentally friendly alternatives to particle board and ABS plastic. This research evaluated the effect of mesh size and coconut coir powder composition on the flexural characteristics of ramie fiber-reinforced polyester composites. Specimens were fabricated by hand lay-up with a constant 5% ramie fiber volume fraction, coir powder volume fractions of 10%, 15%, and 20%, and mesh sizes of 20 and 30. Three-point bending tests followed ASTM D790. The optimum combination was the 20-mesh specimen with 15% coir powder, producing the highest flexural strength of 30.90 MPa and a flexural modulus of 1143.33 MPa. This performance was attributed to a more homogeneous matrix density, which resulted in the fewest voids and no dominant fiber pull-out. All variations exceeded the 18.04 MPa minimum of SNI 03-2105-2006 for high-load furniture panels (Type 18), indicating that the composite is feasible as a particle board substitute. However, its maximum flexural strength remains below the 71 MPa ISO 178 reference for ABS plastic in motorcycle body covers.
Co-Authors Nanang Burhan Oleh Oleh