Kaftancıoğlu, Utku

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https://hdl.handle.net/20.500.14411/7250
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Kaftancıoglu,U.
K., Utku
U., Kaftancioğlu
U.,Kaftancioglu
Kaftancioglu,U.
K.,Utku
U., Kaftancioglu
U., Kaftancıoğlu
Utku, Kaftancioglu
U.,Kaftancioğlu
Kaftancioğlu, Utku
Kaftancıoğlu,U.
U.,Kaftancıoğlu
Utku, Kaftancioğlu
Kaftancıoğlu, Utku
Utku, Kaftancıoğlu
Kaftancioglu, Utku
Job Title
Araştırma Görevlisi
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utku.kaftancioglu@atilim.edu.tr
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Mechanical Engineering
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  • Thumbnail Image
    Conference Object
    Citation - Scopus: 6
    Development of Ni-al/Nb2al Composites for Aircraft Engine Applications Produced by a Combined Method: Sintering + Forging
    (Springer, 2023) Kaftancıoglu,U.; Zambelis,G.; Gatamorta,F.; Miskioglu,I.; Bayraktar,E.
    In this study, the microstructural formation and static/dynamic compression behaviour of the recycled Ni-Al/Nb2Al/ZrO2 matrix-hybrid composites reinforced with Nb and ZrO2 will be studied. It is intended to be an alternative to traditional alloys/composites used in the aeronautical industry. These composites are generally produced by using combined sintering + forging processes. The static and dynamic properties will be evaluated in detail, considering the relevant scanning electron microscopy (SEM) microstructures, including the distribution of reinforcement elements. © 2023, The Society for Experimental Mechanics, Inc.
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    Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Lifetime Prediction of Single Crystal Nickel-Based Superalloys
    (Mdpi, 2025) Kasar, Cagatay; Kaftancioglu, Utku; Bayraktar, Emin; Aslan, Ozgur
    Single crystal nickel-based superalloys are extensively used in turbine blade applications due to their superior creep resistance compared to their polycrystalline counterparts. With the high creep resistance, high cycle fatigue (HCF) and low cycle fatigue (LCF) become primary failure mechanisms for such applications. This study investigates the fatigue life prediction of CMSX-4 using a combination of crystal plasticity and lifetime assessment models. The constitutive crystal plasticity model simulates the anisotropic, rate-dependent deformation behavior of CMSX-4, while the modified Chaboche damage model is used for lifetime assessment, focusing on cleavage stresses on active slip planes to include anisotropy. Both qualitative and quantitative data obtained from HCF experiments on single crystal superalloys with notched geometry were used for validation of the model. Furthermore, artificial neural networks (ANNs) were employed to enhance the accuracy of lifetime predictions across varying temperatures by analyzing the fatigue curves obtained from the damage model. The integration of crystal plasticity, damage mechanics, and ANNs resulted in an accurate prediction of fatigue life and crack initiation points under complex loading conditions of single crystals superalloys.