Studies on fracture mechanics of self-healing epoxy nanocomposite-based carbon nanotube and glass fibers

Composite materials represent a cutting-edge formulation, combining two or more components to achieve multifunctional performance tailored for a range of multidisciplinary applications. In this study, it was focused on the fabrication of epoxy resin with glass fiber to produce a composite material. Furthermore, it explored the incorporation of carbon nanotubes (CNTs) into this formulation, paving the way for the development of self-healing composite sheets capable of withstanding bullet impacts. Characterization of the formulated composites involved a comprehensive comparative analysis utilizing attenuated total reflectance Fourier transform infrared spectroscopy (AT-FTIR) to assess chemical composition, alongside topographical studies employing scanning electron microscopy (SEM) and atomic force microscopy (AFM) to evaluate surface morphology as well as the thermal analysis study. Mechanical properties were rigorously analyzed using coherent gradient sensing (CGS) and mechanical testing methodologies. Our findings unveiled a remarkable compatibility between the epoxy resin and glass fibers in the presence of CNTs, indicating a synergistic enhancement in composite performance. Moreover, the remarkable self-healing capability post-bullet impact was substantiated through SEM imaging and advanced imaging techniques, affirming the efficacy of CNTs incorporation in bolstering composite resilience and durability.