TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7149

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Author: search.filters.author.Tanoğlu, MetinLanguage: search.filters.language.en

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  • Article
    Stab and Ballistic Performances of Aramid Fabrics Impregnated With Silica Based Shear Thickening Fluids
    (Niğde Ömer Halisdemir Üniversitesi, 2021) Çolpankan Güneş, Oylum; Tanoğlu, Metin; Yıldız, Sema; Güneş, Mehmet Deniz; Şenel, Fikret; Tanoğlu, Metin; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    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
  • Article
    Citation - WoS: 11
    Citation - Scopus: 13
    Effect of Cnt Incorporation on Pan/Ppy Nanofibers Synthesized by Electrospinning Method
    (TÜBİTAK, 2020) İnce Yardımcı, Atike; Selamet, Yusuf; Tanoğlu, Metin; Tanoğlu, Metin; Yılmaz, Selahattin; Yılmaz, Selahattin; Selamet, Yusuf; 03.02. Department of Chemical Engineering; 03.10. Department of Mechanical Engineering; 04.05. Department of Pyhsics; 03. Faculty of Engineering; 04. Faculty of Science; 01. Izmir Institute of Technology
    In this study, carbon nanotubes (CNTs) added polyacrylonitrile/polypyrrole (PAN/PPy) electrospun nanofibers were produced. Average diameters of the nanofibers were measured as 268 and 153 nm for 10 and 25 wt% of PPy contents, respectively. A relatively higher strain to failure values (23.3%) were observed for the low PPy content. When as-grown CNTs (1 and 4 wt%) were added into the PAN/PPy blends, disordered nanofibers were observed to form within the microstructure. To improve the interfacial properties of CNTs/PAN/PPy composites, CNTs were functionalized with H2SO4/HNO3/HCl solution. The functionalized CNTs were well dispersed within the nanofibers and aligned along the direction of nanofibers. Therefore, beads formation on nanofibers decreased. The impedance of the nanofibers was found to decrease with the PPy content and CNT addition. These nanofibers had a great potential to be used as an electrochemical actuator or a tissue engineering scaffold.