improving ballistic performance of polyurethane foam by nanoparticle reinforcement
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ID: 233866
2009
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Abstract
We report improving ballistic performance of polyurethane foam by reinforcing it with nanoscale TiO2 particles. Particles were dispersed through a sonic cavitation process and the loading of particles was 3 wt% of the total polymer. Once foams were reinforced, sandwich panels were made and impacted with fragment simulating projectiles (FSPs) in a 1.5-inch gas gun. Projectile speed was set up to have complete penetration of the target in each experiment. Test results have indicated that sandwich with nanophased cores absorbed about 20% more kinetic energy than their neat counterpart. The corresponding increase in ballistic limit was around 12% over the neat control samples. The penetration phenomenon was also monitored using a high-speed camera. Analyses of digital images showed that FSP remained inside the nanophased sandwich for about 7 microseconds longer than that of a neat sandwich demonstrating improved energy absorption capability of the nanoparticle reinforced core. Failure modes for energy absorption have been investigated through a microscope and high-speed images.
| Reference Key |
uddin2009journalimproving
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|---|---|
| Authors | ;M. F. Uddin;H. Mahfuz;S. Zainuddin;S. Jeelani |
| Journal | The Journal of clinical investigation |
| Year | 2009 |
| DOI |
10.1155/2009/794740
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