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<p>Coconut fiber-reinforced composite plates are emerging as sustainable alternatives to synthetic materials due to their strength, lightweight nature, and vibration-damping properties. Using the hand lay-up method, plates were fabricated with alkaline-treated coconut fibers and epoxy resin, improving fiber-matrix adhesion as confirmed by SEM analysis. Vibrational analysis, combining ANSYS simulations, MATLAB modelling, and experimental modal tests, showed close agreement between results, with minor deviations linked to manufacturing defects like voids. The study also examined how void content impacts density and performance, revealing a 7.38% decrease in density—from 1173.2 (void-free) to 1086.6&#xa0;kg/m<sup>3</sup> (with voids). This highlights the importance of minimizing voids to maintain structural integrity and durability. Overall, the findings validate the developed models and emphasize the potential of these composites for applications requiring reliability and sustainability.</p>

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Effect of manufacturing defects on Vibrational Analysis of Coconut Fiber Reinforced Composite Plate

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • P. U. Pratham Karumbaiah,
  • Pranav Chandra Prathuri,
  • K. N. Tushar,
  • Neil Y. Mehta,
  • M. H. Sachhidananda

摘要

Coconut fiber-reinforced composite plates are emerging as sustainable alternatives to synthetic materials due to their strength, lightweight nature, and vibration-damping properties. Using the hand lay-up method, plates were fabricated with alkaline-treated coconut fibers and epoxy resin, improving fiber-matrix adhesion as confirmed by SEM analysis. Vibrational analysis, combining ANSYS simulations, MATLAB modelling, and experimental modal tests, showed close agreement between results, with minor deviations linked to manufacturing defects like voids. The study also examined how void content impacts density and performance, revealing a 7.38% decrease in density—from 1173.2 (void-free) to 1086.6 kg/m3 (with voids). This highlights the importance of minimizing voids to maintain structural integrity and durability. Overall, the findings validate the developed models and emphasize the potential of these composites for applications requiring reliability and sustainability.