Title

Effect Of Nanoparticles With Differing Morphologies On Energy Absorption Of Ballistic Composites

Abstract

Composite armor is widely used in both civilian and military applications in order to achieve high levels of ballistic protection while minimizing the amount of weight required. There is a wide range of fibers and resins employed in order to optimize against particular threat levels and maintain flame, smoke and toxicity standards. In hard armor applications, energy absorption is largely accomplished through delamination between plies of the composite laminate. This energy absorption can be enhanced through the use of nano-particle additives in the resin system. In order to understand the mechanisms of energy absorption in composite armor panels during ballistic events, a number of dynamic testing conducted on thermoset panels with nano-particle fillers of various morphologies is presented. Three different nano-particles are utilized, specifically, multi-walled carbon nanotubes, graphene, and core shell rubber particles. The difference in surface area, aspect ratio and molecular structure between the tube, platelet and spherical nano-particles causes energy absorption through different failure mechanisms. This can change the impact performance of composite panels enhanced with the nano-particle fillers. Composite panels made through the use of dispersing the various nano-particles in a non-contact planetary Thinky mixer, are evaluated through various dynamic and static testing, including unnotched cantilever beam impact (ASTM D4812)[2], and mixed mode fracture toughness (ASTM D6671-06)[3] tests. The results from these tests allow for a theoretical understanding of ballistic performance of the various nano-particles. Copyright 2013 by Aurora Flight Sciences.

Publication Date

8-12-2013

Publication Title

International SAMPE Technical Conference

Number of Pages

214-233

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84881175202 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84881175202

This document is currently not available here.

Share

COinS