Ballistic Evaluation of Carbon Nanotube Sheet Material in Multifunctional Applications
Abstract
This thesis sought to determine if the addition of commercially produced CNT sheets to thin carbon fiber panels improved the ballistic properties of the panel. The difference between 0 and 4 CNT sheets was studied. The hypothesis was that integrating CNT sheets into the laminate would increase the projectile energy absorbed by the panel and reduce the impact damage to the panel. Damage to the panel was assessed through delamination area and EMI shielding degradation. Projectile energy absorption was measured through residual velocity measurement and ballistic limit modeling. A gas gun shooting half inch steel ball bearings was used to model high speed debris impact on the panel. This study found that the addition of one or two CNT sheets provided a marginal increase of up to 0.7 joules of projectile energy reduction by the panel. In general it was not found that the CNT sheets significantly contributed to the ability of the panel to stop a projectile at the quantities studied. It was found that with four CNT sheets in the panel, the EMI shielding after impact at 350 ft/s was improved by as much as 40 dB over the panel with no CNT sheets.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 2019
- Accession Number
- AD1073755
Entities
People
- Casey M Keilbarth
Organizations
- Air Force Institute of Technology