Examining several aspects of reinforced coir, sugarcane, and glass fiber hybrid composites with CoFe₂O₄ and NiFe₂O₄ fillers for structural uses

Department of Mechanical Engineering, Mangalam College of Engineering, Ettumanoor, Kerala, India

^* Corresponding author: vishnuprasad.v@mangalam.in

Published online: 7 January 2026

Abstract

The mechanical and dielectric characteristics of coir and sugarcane fibers are investigated in this work using epoxy composites augmented with NiFe and CoFe metallic fillers. The strength, stiffness, and deformation behavior of four distinct compositions—C1-Coir with NiFe, C2-Coir with CoFe, S1-Sugarcane with NiFe, and S2-Sugarcane with CoFe—were assessed using tensile and flexural testing. With C1 showing the maximum strength of 160.215 N/mm² and S1 showing the highest tensile modulus of 2859.09 N/mm², indicating an improvement in stiffness, the results show that coir-based composites have higher tensile strength. These results demonstrate the promise of composites made of sugarcane and coir as sustainable substitutes for structural applications that need to balance stiffness and strength. More charge storage capacity is shown by a higher dielectric constant in CoFe GFRP (~2.03 pF). The Q factor of NiFe GFRP is much greater, at about 13.4. Their performance for industrial applications in lightweight structures and electromagnetic shielding could be improved by further optimizing fiber-metal interactions and resin composition.