Browsing by Author "Yapıcı, Güney Güven"
Now showing items 41-60 of 88
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Elevated temperature mechanical characteristics and fracture behavior of a novel beta titanium alloy
Sajadifar, Seyed Vahid; Maier, H. J.; Niendorf, T.; Yapıcı, Güney Güven (MDPI, 2023-02-03)In the present work, the elevated-temperature deformation characteristics and microstructural evolution of a Ti-5V-5Mo-5Cr-4Al alloy in solution-treatment conditions were studied under a tensile load at temperatures in the ... -
Evaluating the mechanical behavior of ARB processed aluminum composites using shear punch testing
Aljashaami, Dhyai Hassan Jawad; Ghobadlou, Ali Hosseinzadeh; Mısırlı, Mustafa; Yapıcı, Güney Güven (Trans Tech Publications Ltd, 2020)Multi-layered metal composites have received considerable attention due to their improved mechanical and physical properties. In this study, Al6061/Al2024 composite was processed by accumulative roll bonding (ARB) as a ... -
Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy
Şimşek, Görkem Muttalip; Ipekoglu, M.; Yapıcı, Güney Güven (Springer Nature, 2020-08-02)Successful short-term implementation of nickel-titanium (NiTi) alloys as implants has been a motivation for the development of long-term applications. However, rendering these as safe implant materials is challenging. The ... -
Fabrication and mechanical characterization of polypropylene clay nanocomposites
Zakaria, A. Z.; Salahi, Salar; Yapıcı, Güney Güven (Trans Tech Publications Ltd, 2021)Investigating the influence of process parameters is vital to enhance the mechanical properties of nanoparticle reinforced polymer composites. Nanocomposites of polypropylene/nanoclay are prepared by the extrusion method. ... -
Fatigue behavior of friction stir welded joints of pure copper with ultra-fine grains
Salahi, Salar; Yapıcı, Güney Güven (Elsevier, 2015)In order to determine the long term durability of friction stir welded joints with ultra-fine grained microstructure, investigation of the mechanical response with specific emphasis on fatigue behaviour is critical. In ... -
Fatigue characteristics of continuous welded rails and the effect of residual stress on fatigue-ratchetting interaction
Mansouri, Deniz; Şendur, Polat; Yapıcı, Güney Güven (Taylor & Francis, 2020-03-16)The importance of ratchetting-fatigue interaction is garnering interest due to complex failure mechanism of rail welds under cyclic loading. The objective of this paper is to investigate the fatigue characteristics of ... -
Finite element analysis in a cloud computing environment
Muhtaroğlu, Nitel (2019-01-04)In this thesis, the challenges faced and lessons learned while establishing a large-scale high performance cloud computing service that enables online mechanical structural analysis and many other scientific applications ... -
Formation of nano-sized compounds during friction stir welding of Cu–Zn alloys: effect of tool composition
Heidarzadeh, A.; Radi, Amin; Yapıcı, Güney Güven (Elsevier, 2020-12)For the first time, the origin of tool composition effect on microstructure and mechanical properties of the friction stir welded joints has been disclosed. For this aim, nanoindentation, orientation image microscopy, and ... -
Fracture behavior of ultrafine-grained titanium under tension at elevated temperatures
Sajadifar, Seyed Vahid; Maier, H. J.; Yapıcı, Güney Güven (ASME, 2020-10-01)This investigation focused on the deformation response and microstructural changes of severely deformed titanium during post-severe plastic deformation tension, at temperatures of 300–600 °C and at strain rates of 0.001–0.1 ... -
Graphene as a piezoresistive material in strain sensing applications
Irani, F. S.; Shafaghi, A. H.; Tasdelen, M. C.; Delipinar, T.; Kaya, C. E.; Yapıcı, Güney Güven; Yapıcı, M. K. (MDPI, 2022-01-12)High accuracy measurement of mechanical strain is critical and broadly practiced in several application areas including structural health monitoring, industrial process control, manufacturing, avionics and the automotive ... -
Hardness and wear resistance of roller burnished 316L stainless steel
Tugay, İbrahim Orhun; Ghobadlou, Ali Hosseınzadeh; Yapıcı, Güney Güven (Elsevier, 2021)This study investigates the effects of roller burnishing on the microstructure, surface microhardness, and wear resistance of 316L stainless steel. Experimental design based on the Taguchi orthogonal array was employed to ... -
High temperature characteristics of Al2024/SiC metal matrix composite fabricated by friction stir processing
Ghobadlou, Ali Hosseinzadeh; Yapıcı, Güney Güven (Elsevier, 2018-07-25)In the present study, friction stir processing (FSP) is used for the synthesis of an aluminum metal matrix composite (MMC) reinforced by SiC particles. MMC specimens with reinforced microstructures exhibited significant ... -
High temperature deformation behavior of 4340 steel: activation energy calculation and modeling of flow
Sajadifar, Seyed Vahid; Yapıcı, Güney Güven; Ketabchi, M.; Bemanizadeh, B. (Elsevier, 2013-12)The 4340 steel is extensively utilized in several industries including automotive and aerospace for manufacturing a large number of structural components. Due to the importance of thermo-mechanical processing in the ... -
High temperature flow response modeling of ultra-fine grained titanium
Sajadifar, Seyed Vahid; Yapıcı, Güney Güven (MDPI AG, 2015)This work presents the mechanical behavior modeling of commercial purity titanium subjected to severe plastic deformation (SPD) during post-SPD compression, at temperatures of 600-900 °C and at strain rates of 0.001-0.1 ... -
High temperature mechanical characteristics of friction stir processed light alloys
Ghobadlou, Ali Hosseinzadeh (2018-08)Friction stir processing (FSP) is a recently developed process for surface modification of light alloys that has expanded into applications other than microstructure refinement by the concept of fabricating metal matrix ... -
Hot deformation behavior of ultra-fine grained pure Ti
Sajadifar, Seyed Vahid; Yapıcı, Güney Güven (Trans Tech Publications, 2013-11)In the present study, compression tests were performed at a strain rate of 0.001 to 0.1 s(-1) and in the range of 600 degrees C to 900 degrees C to investigate the high temperature deformation behavior and flow stress model ... -
Improvement of the fatigue performance of an ultrafine-grained Nb–Zr alloy by nano-sized precipitates formed by internal oxidation
Niendorf, T.; Maier, H. J.; Canadinc, D.; Yapıcı, Güney Güven; Karaman, I. (Elsevier, 2008-04)The formation of nano-sized precipitates in an ultrafine-grained Nb–Zr alloy was investigated. ZrO2 precipitates induced by internal oxidation during heat treatment at low homologous temperatures significantly intensify ... -
An in-silico corrosion model for biomedical applications for coupling with in-vitro biocompatibility tests for estimation of long-term effects
Šušteršič, T.; Şimsek, Görkem Muttalip; Yapıcı, Güney Güven; Nikolić, M.; Vulović, R.; Filipovic, N.; Vrana, N. E. (Frontiers Media, 2021-09-07)The release of metal particles and ions due to wear and corrosion is one of the main underlying reasons for the long-term complications of implantable metallic implants. The rather short-term focus of the established ... -
Influence of heat treatment parameters on the functional behavior and corrosion performance of a shape memory wire actuator
Şimsek, Görkem Muttalip; Yapıcı, Güney Güven (Trans Tech Publications Ltd, 2020-04)In the present study, the effect of heat treatment parameters on the functional response, corrosion behavior and microstructural evolution of NiTi shape memory alloys were investigated. Various heat treatment regimes were ... -
Influence of warm rolling and aging on the microstructural evolution and mechanical behavior of AZ31 magnesium alloy
Mısırlı, Mustafa; Ghobadlou, Ali Hosseinzadeh; Yapıcı, Güney Güven (American Institute of Physics Inc., 2019)The microstructural evolution and tensile properties of AZ31 after warm rolling and different aging methods and conditions were investigated. The warm rolling was conducted on the as-received AZ31 after homogenization at ...
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