Research on ballistic impact characteristics of carbon/aramid fiber hybrid laminates

doi:10.19936/j.cnki.2096-8000.20231228.013

Abstract

Abstract: In order to explore the impact resistance characteristics of carbon fiber, aramid fiber and carbon/aramid fiber hybrid plates, ballistic impact tests were conducted on T700SC-12K-50C carbon fiber laminate, 1000D629T aramid fiber laminate and two kinds of carbon/aramid fiber hybrid plates respectively, and their ballistic impact characteristics were evaluated through the impact resistance evaluation parameters. At the same time, with the help of CT scanning results, the internal damage of the laminated plate was analyzed, the mechanism of energy absorption was revealed, and the influence of fiber hybrid on ballistic impact characteristics was further explored. The results show that the energy absorption capacity of the flat plate increases with the increase of the projectile incident velocity until the saturation reaches the peak value. When the projectile incident velocity exceeds the ballistic limit, the energy absorption of the flat plate remains stable or slightly decreases with the increase of the incident velocity, while the energy absorption rate gradually decreases. The impact resistance of the pure aramid fiber plate is better than that of the pure carbon fiber plate. Replacing the carbon fiber layer on both sides of the pure aramid fiber plate can improve the overall energy absorption effect, but the impact resistance of the plate decreases when more carbon fibers are replaced. Under the impact of cylindrical projectile, the damage of pure carbon fiber plate is notch type, mainly shear failure, and the damage is concentrated near the impact part of the projectile. The pure aramid fiber plate and carbon/aramid fiber hybrid plate are explosion damage. The shape of the bullet hole is round near the projectile attack surface, while the damage area on the projectile back surface is conical. The damage formation process includes three stages: extrusion deformation, shear penetration and tensile penetration.

Key words: carbon/aramid fiber hybrid plate, ballistic impact test, failure morphology, damage mechanism, composites

CLC Number:

TB332

LIU Yating, XIE Jiang, MOU Haolei, FENG Zhenyu. Research on ballistic impact characteristics of carbon/aramid fiber hybrid laminates[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(12): 96-104.

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