Topologically Controlled Composite Materials with High Energy Absorption Capability

Executive Summary

Composite materials are a well-established technology in applications requiring high-performance such as sports, aerospace, or defense. However, conventional fiber reinforced composites are prone to severe delamination, cracking, and fiber breakage upon projectile impact. This lack of toughness is a critical limitation on the possible uses of the composite. MSU researchers have developed a new composite material based on small angle lamination (~15 degrees) with macroscopic curvature to give an increase in fiber bridging and increased toughness. 

Description of Technology

The technology is a composite structure comprising multiple layers where some of the layers are oriented between 5 and 15^o from the first and a portion of has a curved shape when cured, whereby an additional skin layer is also attached to the curved shape. This leads to increased fiber bridging and improved toughness of the composite structure.

Benefits

• Usability: Due to its superior impact resistance this material can be utilized for many applications for which commercially available composites cannot be used. 
• Versatility: The light, tough composite material can be formed into curved and thin shapes greatly enhancing possible uses.
• Composite structure doubles energy absorption capability
• Improved impact resistance from projectiles

Applications

• Armored ground vehicles, equipment
• Armor for ballistics applications, protective gear
• Aircraft and marine
• Sporting goods

Patent Status

Granted US patent 7,807,258

Inventors

Dr. Dahsin Liu, Peter Schulz

Tech ID 

TEC2006-0125