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Natural Composites Reinforcement of Empty Bunch Palm Oil Powder for Blower Impellers Manufacturing

Muhammad Rafiq Yanhar, Suhardi Napid, Ahmad Bakhori, Abdul Haris Nasution, Wans Pahlevi

2026encomposite materialsblower impellerpalm oil fibertensile strengthimpact strengthmechanical engineering

Abstract

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The study aims to design and fabricate blower impellers from a natural composite using empty oil palm bunch (EFB) powder as reinforcement and polyester resin as the matrix. Composites were produced with three EFB powder contents: 5%, 10%, and 15% by weight, using an open-mold casting process with BQTN 157 polyester resin and MEKPO catalyst. Mechanical characterization included tensile tests and impact tests to evaluate the effect of powder content on strength. The highest tensile strength (16.127 MPa) was obtained at 15% powder, while the highest elastic modulus (170.85 MPa) occurred at 10% powder; a drop in tensile strength at 10% was attributed to voids and air bubbles in the specimens. Impact testing showed that the 15% powder composite absorbed the greatest impact energy (31.201 J/cm²). Overall, increasing the proportion of EFB powder tended to improve both tensile and impact properties, indicating that EFB powder-reinforced composites are a viable, lightweight, and potentially low-cost alternative material for blower impellers.

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Cite This Work

@article{ddce7925-662c-44ec-88f8-58855596b2b9,
  title={Natural Composites Reinforcement of Empty Bunch Palm Oil Powder for  Blower Impellers Manufacturing  },
  author={Muhammad Rafiq Yanhar and Suhardi Napid and Ahmad Bakhori and Abdul Haris Nasution and Wans Pahlevi},
  year={2026},
  language={en}
}
TY  - JOUR
TI  - Natural Composites Reinforcement of Empty Bunch Palm Oil Powder for  Blower Impellers Manufacturing  
AU  - Muhammad Rafiq Yanhar
AU  - Suhardi Napid
AU  - Ahmad Bakhori
AU  - Abdul Haris Nasution
AU  - Wans Pahlevi
PY  - 2026
LA  - en
ER  -

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