Dual Nano‐Reinforcement Approach for Optimizing Tensile Performance in Glass Fiber‐Reinforced Epoxy Laminates

ABSTRACT The development of high‐performance composite materials with superior mechanical properties is vital for advanced structural applications, where both strength‐to‐weight ratio and mechanical reliability are critically important. Incorporating nanoscale reinforcements into polymer matrices presents a promising strategy to overcome the inherent limitations of conventional fiber‐reinforced composites by enabling tailored mechanical responses at the micro‐ and nanoscale levels. In this context, this paper studies the influence of dual nanopowder reinforcement on the tensile properties of glass fiber‐reinforced epoxy (GFRE) composites. Two types of nanopowders, halloysite nanotubes (HNTs) and carbon nanopowders (CNPs), were incorporated as nanofillers at a total concentration of 2% weight percentages (wt), with varying ratios. The combination of these nanofillers was employed to take advantage of their complementary effects, allowing the hybrid system to enhance load transfer, improve toughness, and optimize overall tensile performance compared to single nanofiller composites. Specimens were fabricated using the hand lay‐up technique. The mechanical properties evaluated included ultimate tensile strength (), failure strain (), tensile modulus (E), and modulus of toughness (). Also, statistical analysis based on Weibull distribution was conducted to assess the reliability and variability of the tensile performance. A complex proportional assessment (COPRAS) method was employed to determine the optimal configuration. The findings exposed a significant synergistic effect arising from the hybrid nanofillers system, resulting in notable enhancements in tensile properties compared to composites reinforced with individual nanofillers. The COPRAS results further indicated that the H1.75‐C0.25 combination exhibited the best tensile performance.