Lightweight Ballistic Panel With Aluminum Honeycomb Core

The patent employs a composite structure consisting of a metal core (such as aluminum alloy) combined with a ballistic composite material layer. The metal core provides structural strength and rigidity, while the ballistic composite layer (made from high-performance fibers like aramid, polyethylene, or polypropylene) provides ballistic resistance. This composite approach achieves effective penetration resistance while significantly reducing weight compared to traditional solid metal armor.

The ballistic composite layer is strategically positioned on the threat-facing side of the panel where ballistic resistance is most needed, while the metal core provides structural support throughout. This localized application of different materials optimizes weight distribution and ensures ballistic protection is concentrated where most required, rather than uniformly distributing mass throughout the entire panel.

The patent removes adhesive resins from the ballistic composite structure entirely. Instead of using resin-bonded fiber mats, the design employs mechanically interlocked high-performance fibers that derive their structural integrity from fiber-to-fiber friction and mechanical entanglement. This extraction of the harmful adhesive component eliminates the fire safety issue while maintaining the necessary structural integrity through alternative mechanical bonding mechanisms.

The design accepts that the ballistic layer may be consumed or degraded during ballistic events, and relies on the permanent metal core structure to maintain overall panel integrity. The ballistic composite is designed as a sacrificial element that absorbs impact energy through fiber deformation and breakage, while the metal core remains intact and can be replaced if needed, rather than requiring fire-resistant adhesives to preserve permanent bonding.

The patent divides the panel into discrete, manufacturable components: a metal core structure and separate ballistic composite layers. These segments can be manufactured independently using standard fabrication processes for metal forming and composite layering, then assembled together. This segmentation allows each component to be optimized and manufactured separately, reducing overall manufacturing complexity while maintaining the ballistic performance of a seamless structure through proper interface design.

The patent addresses the seam issue by extending the ballistic composite layer beyond the edges of the metal core, creating an overlapping configuration. This dimensional extension into the peripheral region ensures that ballistic threats approaching at angles or targeting seam areas are still intercepted by the composite material, effectively compensating for the presence of seams without requiring complex seamless joining processes.