Comparative Study of Epoxy-based Composites Reinforced with Glass Fibre, Natural Fibre, Graphene, Aramid Fibers and Investigation on the Effect of Fibre Orientation on the Strength of Polymer Composite

This study provides a comprehensive comparative analysis of epoxy-based composites reinforced with four distinct types of fibers- glass fiber, natural fiber, graphene, and aramid fiber. The research aims to explore and contrast the mechanical, thermal, and physical properties of these composites to determine their suitability for various industrial applications. Glass fiber-reinforced composites are known for their high strength-to-weight ratio, excellent corrosion resistance, and cost-effectiveness, making them popular in automotive and aerospace industries. Natural fiber composites, offer environmental benefits due to their biodegradability and renewability, but their mechanical performance often lags behind synthetic counterparts. Graphene, a novel material with exceptional mechanical properties, thermal conductivity, and electrical conductivity, is evaluated for its potential to significantly enhance the performance of epoxy composites. Despite its promising properties, challenges such as dispersion and cost need to be addressed. Aramid fibers, renowned for their high tensile strength, impact resistance, and thermal stability, are widely used in ballistic applications, protective clothing, and highperformance composites. The methodology involves preparing composite samples by embedding these fibers in an epoxy matrix using standard manufacturing techniques. Various tests are conducted to assess tensile strength, flexural strength, impact resistance, thermal stability. Results indicate that while glass fiber composites offer a balanced performance with cost efficiency, graphene-reinforced composites exhibit superior mechanical and thermal properties. Natural fiber composites, though environmentally friendly, demonstrate lower performance metrics. Aramid fiber composites, while highly durable and heat resistant, are more expensive, limiting their widespread application. This comparative study highlights the trade-offs between different fiber reinforcements in epoxy-based composites, providing valuable insights for material selection in specific applications. The findings aim to guide engineers and material scientists in optimizing composite design for enhanced performance and sustainability. Further this study investigates the effect of fiber orientation on the mechanical and thermoelastic properties of epoxy-based composites reinforced with glass, natural, graphene, and aramid fibers [1]. The orientations considered are 30°, 45°, 60°, and 90°, and their performance is compared across different types of reinforcement.