Yazar "Erkendirci, Ö. Faruk" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Effect of Inclined Cracks on the Fatigue and Fracture Behavior of Woven Steel/Reinforced Polyethylene Composite
    (SAGE PUBLICATIONS LTD, 2010) Erkendirci, Ö. Faruk; Avcı, Ahmet
    In this study, the fatigue and fracture behavior of woven steel/reinforced high-density polyethylene thermoplastic composite, having a middle tension specimen with inclined through-thickness cracks, under fatigue loading were examined. The composite material was manufactured from bidirectional woven Cr-Ni steel fibers and high-density polyethylene with a fiber volume fraction (V(f)) of 0.04. The separate cracks on the sample are oriented at different angles such as 15 degrees, 30 degrees, 45 degrees, 60 degrees, and 75 degrees. According to each crack geometry, fatigue crack growth was investigated. During the fatigue test, crack initiation, fatigue life, fatigue crack growth rate (da/dN), and stress intensity factor ranges (Delta K(I), Delta K(II), Delta K(Ieq), Delta K(IIeq), and Delta K(eq)) were examined. In addition, strain energy release rate (Delta G) was checked out, since it was also an effective parameter in crack propagation. Crack growth rate was used as a damage parameter related to the crack geometry. In the results, crack growth rate was controlled through stress intensity factor ranges (Delta K) and strain energy release rates (Delta G). Graphs of Delta a/N, da/dN - Delta K and da/dN - Delta G such as material properties under consideration were plotted on log scale. Material constants were determined using Paris-Erdogan equation. Also, Delta G values were determined using linear elastic fracture method and compliance method, and the results were compared.
  • Küçük Resim
    Öğe
    Investigation of the Fracture Behavior of Woven Fiber Glass-Reinforced Low-Density Polyethylene Composite
    (Sage Publications Ltd, 2010) Erkendirci, Ö. Faruk; Avcı, Ahmet; Ekrem, Mürsel
    The fracture behavior of woven fiber glass-reinforced low-density polyethylene thermoplastic composite having a middle tension specimen with inclined through-thickness cracks under static loading is studied in this article. Through the experiments, the topics crack growth, crack opening displacement (COD), stress intensity factors, and fracture toughness are studied. Crack growth amount and COD values are used as a damage parameter factor for crack geometry calculations. The consequent results of the experiments are inspected with J-integral method and stress intensity factor. Load-elongation and load-crack mouth opening displacement, the strain energy release rate-crack growth amount, stress intensity factor-crack growth amount graphics were drawn as the material properties under consideration.