期刊
PHILOSOPHICAL MAGAZINE
卷 93, 期 5, 页码 468-477出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786435.2012.722235
关键词
ballistic impact resistance; elastomer coatings; metal substrates; polyurea
类别
资金
- Office of Naval Research
- [331]
An experimental study was carried out of various factors affecting the ballistic penetration resistance of elastomer/steel bilayers. For blunt penetrators, the contribution of the coating to performance is optimized using the hardest substrates, front surface placement of the elastomer, and (when normalizing by added weight) thin, ca. 23?mm, coatings. These results, none of which are predicted by existing models, evince the marked coupling of coating and substrate in the impact response of the bilayer. We also show that nanoparticle fillers have a modest effect on ballistic performance of polyurea coatings, changing the penetration velocity by a few percent or less. This contrasts with the linear dynamic mechanical behavior, which shows much more significant increases in energy absorption due to nano-reinforcement.
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