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This paper describes the high-velocity performance of composite sandwich panels with different amounts of nano-SiO 2 in this respect. Carbon/fiber epoxy composite face sheets and an M-shaped core were produced by carbon/fiber epoxy composite face sheets and an M-shaped core using the vacuum-assisted resin transfer molding technique. The nanoparticles were added to the resin epoxy matrix as filler with the proportions of 1%, 2%, and 3% of the composite's total weight to increase the mechanical stability of the matrix, particularly impact resistance. The experimental results indicated that incorporating 1u20133 wt% of nano-SiO 2 into the matrix remarkably improved the composite's impact resistance. Moreover, the results found that when the projectile collides with the sandwich panel's core, it stays in the sandwich panel and the output velocity decreases to zero, while when the projectile does not collide with the core does not align with the center is not zero.
Source link: https://doi.org/10.1177/14644207221109879
The paper explores the effect of nano-modification of carbon fiber reinforced plastic on the residual stress-strain state after molding using numerical and analytical techniques. When using a matrix made up of carbon nanoparticles, conclusions are drawn about the likelihood of reducing the residual stress-strain state in structures with asymmetric reinforcement scheme. When using a matrix made of carbon nanoparticles, the results of exploring the remaining stress-strain state of structural elements made of carbon fiber reinforced plastic revealed the possibility of reducing the residual stress-strain state and leash in structures with asymmetric reinforcement scheme.
Source link: https://doi.org/10.46300/9104.2021.15.20
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