Abstract
Recently, a novel nanoporous materials functionalized liquid (NMFL) system was developed to reduce the incident stress wave and keep it lower than the safety threshold efficiently. The inner surface of the nanopores is nonwettable to the liquid phase by applying special surface treatment. When the nanoporous particles are immersed into the liquid, due to the capillary effect, the nanopores remain empty. The blast wave front, typically with the rising time around 100 μs, can generate high local pressure which compresses the liquid into the nanopores in a few microseconds. A significant amount of the incident energy is converted into heat due to the interfacial tension. Moreover, a considerable fraction of the incident energy can be “captured” through a non-dissipative process due to the small ligament length and the effective multilayer structure with large impedance mismatch of the nanoporous structure.
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Acknowledgments
The concept generation, the theoretical analysis, and the system design were supported by the National Science Foundation under Grant No. ECCS-1028010. The experimental investigation was supported by the Army Research Office under Grant No. W91CRB-11-C-0112, and the materials preparation was supported by DARPA under Grant No. W91CRB-11-C-0112.
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Lu, W. (2016). Novel Protection Mechanism of Blast and Impact Waves by Using Nanoporous Materials. In: Song, B., Lamberson, L., Casem, D., Kimberley, J. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-22452-7_25
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DOI: https://doi.org/10.1007/978-3-319-22452-7_25
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