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<p>This study seeks to develop and assess a new hybrid natural composite reinforced with sorghum stalk particles (SSp) and Acacia caesia fibers (ACF) by examining its mechanical and physical properties, alongside microstructural analysis. The composite specimens were fabricated using the hand lay-up technique to ensure effective integration of the reinforcements within the matrix. Adding 12 wt% SSp to the test samples decreased their density by 40%, and as the fiber content grew, so did its water absorption (WA). Highest tensile strength (29.42&#xa0;MPa) and modulus (3.83 GPa) were observed in the sample with 4 wt% and 12 wt% of SSp, respectively. At 12 wt% SSp, the maximum flexural strength and modulus were reached, while the highest impact strength of 106.14&#xa0;J/m was observed at 8 wt% SSp. The addition of AC (18 wt%) fiber reinforcement to the SSp reinforced composite resulted in an improvement. The findings indicate that the incorporation of SSp and ACF enhances composite performance, with a reduction in density and an increase in water absorption at higher fiber content. Mechanical properties showed overall improvement, with tensile strength reaching its peak at lower reinforcement levels, flexural properties at higher content, and impact strength at intermediate levels. The developed composite demonstrates significant potential as a lightweight, cost-effective, and sustainable material for engineering applications.</p>

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Investigation of strength, durability, and water resistance of sorghum stalk particles reinforced with Acacia caesia fiber composites

  • 期刊论文

  • 发表日期：

    2026年5月7日

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  • C. Gnanavel,
  • Sandeep V,
  • Ruby Pant,
  • S. Magibalan,
  • Sathish Kannan,
  • D. S. Balaji

摘要

This study seeks to develop and assess a new hybrid natural composite reinforced with sorghum stalk particles (SSp) and Acacia caesia fibers (ACF) by examining its mechanical and physical properties, alongside microstructural analysis. The composite specimens were fabricated using the hand lay-up technique to ensure effective integration of the reinforcements within the matrix. Adding 12 wt% SSp to the test samples decreased their density by 40%, and as the fiber content grew, so did its water absorption (WA). Highest tensile strength (29.42 MPa) and modulus (3.83 GPa) were observed in the sample with 4 wt% and 12 wt% of SSp, respectively. At 12 wt% SSp, the maximum flexural strength and modulus were reached, while the highest impact strength of 106.14 J/m was observed at 8 wt% SSp. The addition of AC (18 wt%) fiber reinforcement to the SSp reinforced composite resulted in an improvement. The findings indicate that the incorporation of SSp and ACF enhances composite performance, with a reduction in density and an increase in water absorption at higher fiber content. Mechanical properties showed overall improvement, with tensile strength reaching its peak at lower reinforcement levels, flexural properties at higher content, and impact strength at intermediate levels. The developed composite demonstrates significant potential as a lightweight, cost-effective, and sustainable material for engineering applications.