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Stab and Ballistic Performances of Aramid Fabrics Impregnated With Silica Based Shear Thickening Fluids
(Niğde Ömer Halisdemir Üniversitesi, 2021) Çolpankan Güneş, Oylum; Yıldız, Sema; Güneş, Mehmet Deniz; Şenel, Fikret; Tanoğlu, Metin
This study focuses on the production of aramid fabric with improved stab and ballistic resistances treated with shear thickening fluids (STFs). The STFs were prepared by homogenization of various amount of silica particles within the PEG and ethyl alcohol, drying, and grinding steps. The rheological measurements showed that the addition of silica nanoparticles into the PEG, shear thickening behavior was enhanced. As silica concentration increased, the interparticle forces increased and so the friction between particles greatly increased, causing an enhanced shear- thickening property. Quasi-static and dynamic stab resistance tests showed that increasing shear thickening response corresponded to increased stab performance in the STF/aramid targets as compared to untreated aramid fabric. Ballistic test results showed that there was an increment in the ballistic resistance between untreated fabric and STF/aramid composites. It was also found that the flexibility of STF/aramid targets did not decrease significantly compared to the untreated aramid fabric

Mechanical Engineering / Makina Mühendisliği