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Researchers at Korea Advanced Institute of Science and Technology (KAIST) Report New Data on Impact Engineering [Empirical study of the high velocity...

August 27, 2014



Researchers at Korea Advanced Institute of Science and Technology (KAIST) Report New Data on Impact Engineering [Empirical study of the high velocity impact energy absorption characteristics of shear thickening fluid (STF) impregnated Kevlar ...]

By a News Reporter-Staff News Editor at Journal of Engineering -- New research on Impact Engineering is the subject of a report. According to news reporting originating from Taejon, South Korea, by VerticalNews correspondents, research stated, "The application of shear thickening fluids (STF) allows further enhancement of ballistic resistance without hindering flexibility by the fabric impregnation process. Studies on the effect of STF impregnation on fabric ballistic performance have been limited to the impact velocity range of below 700 m/s."

Our news editors obtained a quote from the research from the Korea Advanced Institute of Science and Technology (KAIST), "Considering the muzzle velocity of modern rifles with high performance cartridges, investigation of the high velocity impact energy absorption characteristics of neat and STF impregnated Kevlar fabric specimens was conducted in this study. 100 nm diameter silica nanoparticles were dispersed in a solution of polyethylene glycol (PEG) and diluted with methanol for effective impregnation to the Kevlar fabric. High velocity impact experiments with projectile velocities between 1 and 2 km/s were conducted using a 2-stage light gas gun. The experiments revealed that the STF impregnation provides substantial energy absorption enhancement in terms of volume, areal density, and fabrication material cost."

According to the news editors, the research concluded: "Thinner shielding configurations with equivalent energy absorption performance was found to be possible through SIT impregnation as the 5 layer STF impregnated Kevlar configuration showed the same energy absorption as the 8 layer neat Kevlar while the energy absorption normalized for areal density and thickness revealed that the STF impregnated Kevlar provides an approximately 70% enhanced specific energy absorption performance over neat Kevlar."

For more information on this research see: Empirical study of the high velocity impact energy absorption characteristics of shear thickening fluid (STF) impregnated Kevlar fabric. International Journal of Impact Engineering, 2014;72():67-74. International Journal of Impact Engineering can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; International Journal of Impact Engineering - www.elsevier.com/wps/product/cws_home/700)

The news editors report that additional information may be obtained by contacting Y. Park, Korea Adv Inst Sci & Technol, Taejon 305701, South Korea. Additional authors for this research include Y. Kim, A.H. Baluch and C.G. Kim.

Keywords for this news article include: Asia, Taejon, South Korea, Impact Engineering

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Source: Journal of Engineering


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