High-performance ballistic protection using polymer nanocomposites

High-performance ballistic protection using polymer nanocomposites 

GAO and T. YU, The Hong Kong University of Science and Technology, People s Republic of China 

Key words ballistic fibers, micro-Raman spectroscopy, nanotechnology, reinforcement mechanisms, reinforcing polymer nanocomposite fibers. 

Projectiles may impact targets at a wide range of velocities due to the in-boie dynamics of the projectile, flight distances, and so on. And different velocities have different physical impacts on solid targets. At very low velocities ( 250 m/s), 

Even without penetration, modem pistol bullets contain enough energy to cause blunt force trauma under the impact point. Vest specifications will typically include both penetration resistance requirements and limits on the amount of impact energy that is delivered to the body. Vests designed for bullets offer little protection against blows fi om sharp implements, such as knives, arrows or ice picks, or from bullets manufactured of non-deformable materials, that is, those containing a steel core instead of lead. This is because the impact force of these objects stays concentrated in a relatively small area, allowing them to puncture the fiber layers of most bullet-resistant fabrics. 

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