Effect of alumina nanoparticles on the strain field distribution of carbon fiber-reinforced polymer nanocomposites

In this study, the effect of adding alumina nanoparticles on the mechanical behavior and strain field distribution of carbon fiber-reinforced polymer (CFRP) composites were investigated. Composite laminates were fabricated with a fiber-to-resin weight ratio of ۶۰:۴۰ using SE-۰۰۲ carbon fabric and CR۱۲۲ epoxy resin. After preparing the reference samples, γ-phase alumina nanoparticles with various weight fractions were incorporated into the polymer matrix. The specimens were then subjected to uniaxial tensile loading, and the strain fields were analyzed using the Digital Image Correlation (DIC) technique. The tensile test results indicated an improvement in the mechanical performance of the fabricated specimens compared with those without alumina nanoparticles. The best mechanical performance was observed in specimens containing ۰.۵ wt% alumina nanoparticles. DIC analysis revealed that increasing the nanoparticle content led to a more uniform strain distribution and a reduction in local stress concentrations. Overall, the results of this study confirmed that the addition of alumina nanoparticles enhances the mechanical performance of carbon fiber-reinforced polymer composites.

کلیدواژه ها:

Alumina nanoparticles ، Carbon fiber reinforced polymers ، Digital Image Correlation ، Tensile behavior