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20132
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Yazar: Karakuzu, Ramazan × Erişim Hakkı: info:eu-repo/semantics/closedAccess ×

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  • Küçük Resim
    Öğe
    Transverse impact and axial compression behaviors of glass/epoxy pipes subjected to seawater and impact loading
    (SAGE, 2013-07) Deniz, Mehmet Emin; Karakuzu, Ramazan; İçten, Bülent Murat
    This article investigates the effects of seawater and impact loading on the impact behavior and compressive strength of impacted glass/epoxy composite pipes. The specimens were immersed into artificial seawater at laboratory conditions for 3, 6, 9, and 12 months. First, the impact tests were carried out on composite pipes at room temperature, and then, the axial compression tests were performed. The results of immersed samples were compared with that of reference specimens (dry). Seawater effect on the force-deflection behavior and failure mechanism is more than impact energy with increase in pipe diameter, while impact energy effect is more dominant than seawater effect for small diameters of the pipe. Compressive strength generally reduces with increase in seawater immersion time and specimen diameter except for the highest diameter.
  • Küçük Resim
    Öğe
    Failure pressure and impact response of glass-epoxy pipes exposed to seawater
    (Elsevier, 2013-06-13) Deniz, Mehmet Emin; Özdemir, Okan; Özen, Mustafa; Karakuzu, Ramazan
    In this paper, the effect of seawater on failure pressure and impact behaviors of polymer-matrix composites (PMCs) was investigated, experimentally. E-glass fiber and epoxy resin-based composite pipes consist of six layers with ±55 winding angle. The composite pipes were manufactured using filament winding technique. Test samples, dry and immersed in artificial seawater having salinity about 3.5% during 3, 6 and 9 months (according to ASTM D1141) in laboratory, were subjected to static pressure tests before and after impact test. Tests were carried out to determine reduction in failure pressure at room temperature. The test results were compared with those of non-impacted and dry condition samples to study the variation of the residual failure pressures at different impact energies and environmental cases. Results show that the seawater and transverse impact have significant effects on the failure pressures of the composite pipes.