A team at the University of North Carolina found that an inch-thick layer of composite foam could stop a bullet fired. The video clearly shows how the bullet after the shot, instead of piercing through the target made of composite foam, literally shatters into small pieces.
Metallic foam consists of hollow beads of one metal integrated into a substrate of another metal. Despite its low density, the foam has impressive physical characteristics. Foam is not only excellent armor, but also reliable protection against X-rays, gamma and neutron radiation.
Another unique quality of composite foam is its low thermal conductivity. This indicator is 2 times better than that of the metals that are part of it. Military experts are already interested in the new material. It is expected that representatives of the space industry and manufacturers of containers for nuclear waste will show no less interest in it.