Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Çolak, Murat(8)
- Bayram, Sinan(5)
- Öner, Erdal(5)
- Can, Zehra(4)
- Ecem Bayram, Nesrin(4)
- Kolaylı, Sevgi(4)
- Turan, Muhittin(4)
- Demirtaş, Betül(3)
- Dispinar, Derya(3)
- Erbayrak, Engin(3)
- Gumus, Beril Eker(3)
- Kamiloğlu, Aybike(3)
- Türker, Temel(3)
- Yanik, Yusuf(3)
- Yuncuoglu, Ercument Ugur(3)
- Özdemir, Akın(3)
- Şahin, Engin(3)
- Aymelek, Abdullah(2)
- Birinci, Ahmet(2)
- Dertli, Enes(2)
- Ergün, Mustafa(2)
- Eryılmaz Türkkan, Gökçen(2)
- Gerçek, Yusuf Can(2)
- Gul, Volkan(2)
- Gıdık, Betül(2)
- Kahraman, Yusuf(2)
- Kamiloglu, Aybike(2)
- Kara, Yakup(2)
- Keskin, Merve(2)
- Kul, S.(2)
- Malgaca, Levent(2)
- Nabiyev, Vasif(2)
- Oktay, Mine Gül(2)
- Sefaoglu, Firat(2)
- Turhal, Uğur(2)
- Uslu, Emin(2)
- Uyar, Mehmet(2)
- Uzun Yaylacı, Ecren(2)
- Yaylacı, Murat(2)
- Özkök, Aslı(2)
Yayınlar
- DüzeltmeAçık Erişim2020Scopus SJRQ2Correction to: Investigation of the solution for discontinuous contact problem between a functionally graded (FG) layer and homogeneous half-space (Archive of Applied Mechanics, (2020), 90, 12, (2799-2819), 10.1007/s00419-020-01750-y)
Öner, Erdal; Birinci, Ahmet
kUnfortunately, Figs. 5, 6, 8 and 10 have been processed incorrectly. Correct figures are provided in this correction article. The Original article has also been corrected.
AtıfScopus2WoS2OpenAlex2
İncele - MakaleYalnız künye2020Scopus SJRQ2Investigating the Optimum Model Parameters for Casting Process of A356 Alloy: A Cross-validation Using Response Surface Method and Particle Swarm Optimization
Şensoy, Abdullah Tahir; Çolak, Murat; Kaymaz, Irfan; Dispinar, Derya
This study aimed to determine the optimal casting parameters for the maximum fluidity of A356 alloy. Gravity die cast method was used. For this purpose, central composite design (CCD) was performed. The input parameters and their limits for the trial design were selected as pre-heating temperature (100–400 °C), casting temperature (680–760 °C), and cross-sectional thickness (1–10 mm). Using the CCD-based simulation results of the feed distance, a highly correlated full-quadratic regression equation was obtained with the highest R2 (0.99), which then was used as the objective function for the particle swarm optimization (PSO) process. The highest value of the response parameter, flow distance, reached up to 491.19 mm when the input parameters were selected as 400 °C, 760 °C and 10 mm, respectively. The sensitivity analysis has shown that the most effective parameter on the fluidity is the cross-sectional thickness. The response surface method (RSM)-based optimization results have been also validated using the PSO method. Although the higher temperatures have been found to result in better fluidity, there may be some drawbacks to working at higher temperatures such as energy cost and mould life. To determine the optimum input parameters, the RSM model suggested in this study can be modified for any type of casting process. Moreover, especially for a complex-shaped part, the manufacturer can be advised regarding operating conditions such as pre-heating and casting temperatures.
AtıfScopus11WoS9OpenAlex13İncele - MakaleAçık Erişim2020Scopus SJRQ2Investigation of the solution for discontinuous contact problem between a functionally graded (FG) layer and homogeneous half-space
Öner, Erdal; Birinci, Ahmet
In this study, the discontinuous contact problem between a functionally graded (FG) layer, which is loaded symmetrically with point load P through a rigid block, and a homogeneous half-space was solved using the theory of elasticity and integral transform techniques. The shear modulus and density of the layer addressed in the problem vary with an exponential function along with its height. The half-space is homogeneous, and no binder exists on the contact surface containing the FG layer. In the solution, the body force of the FG layer was considered, whereas that of the homogeneous half-space was neglected. The Poisson’s ratios of both the FG layer and homogeneous half-space were assumed to remain constant. Additionally, all the surfaces addressed in the problem were assumed to be frictionless. Using the theory of elasticity and integral transform techniques, the discontinuous contact problem was reduced to two integral equations, wherein the contact stress under the rigid block and the slope of the separation, which occurred at the interface of the FG layer and homogeneous half-space, are unknown. These integral equations were solved numerically for the flat condition of the rigid block profile using the Gauss–Chebyshev integration formula. Consequently, the stress distributions, start–end points of the separation region, and separation displacements between the FG layer and homogeneous half-space were obtained for various dimensionless quantities.
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