Navy

Performance-Tailored Woven Fabric Technologies for Enhanced Dynamic Energy Absorption

Fabric architectures to improve the performance, survivability, damage tolerance, and dynamic energy absorption of woven fiber in a broad array of applications

Materials
Crimp-imbalanced weaves (A) improve performance of existing fibers. Composites of multiple crimp-balanced (B) and crimp-imbalanced layers provide enhanced ballistic & puncture protection as well as enhanced fatigue resistance

Crimp-imbalanced weaves (A) improve performance of existing fibers. Composites of multiple crimp-balanced (B) and crimp-imbalanced layers provide enhanced ballistic & puncture protection as well as enhanced fatigue resistance

The US Naval Undersea Warfare Center, Division Newport (NUWCDIVNPT) has designed, tested, and patented applications of crimp imbalanced (CI) fibers to improve the performance of existing woven materials.  The technology has demonstrated 20% improvements in the dynamic energy absorption capabilities of commercially-available products in dry woven fabrics and woven composite laminates.  Both single-ply CI layers, and crimp-imbalanced gradients (CIG) consisting of multiple layers of stacked woven fabrics incorporating CI and crimp balanced (CB) fibers, demonstrate improved performance and damage tolerance by increasing the number of active fibers and extending the engagement time of those fibers in order to reduce fiber failures during dynamic loading events.

The Navy’s technology offers a simple modified woven architecture to increase the performance of existing commercially available fibers without adding weight.  Increased performance in certain applications could result in reduced weight as additional layers become unnecessary.  CIG architectures provide both ballistic and puncture protection, and can enhance composite resistance to fatigue failures.  Dry materials applications of CI fabrics are highly desirable due to the level of comfort imparted by excellent flexibility and drapability characteristics.

 

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