Yazar "Baykasoğlu, Cengiz" için listeleme
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Kafes yapı dolgulu hibrit tüplerin enerji sönümleme performanslarının sonlu elemanlar yöntemi kullanılarak incelenmesi
Çetin, Erhan; Baykasoğlu, Cengiz (2019)İnce cidarlı tüplerin enerji sönümleme performanslarının iyileştirmesine yönelik literatürde birçok farklı yaklaşım önerilmiştir. Bu bağlamda farklı tipte malzemeler, kesit geometrileri, desenler vb. önerilmiş ve bu yapıların ... -
Kafes yapı dolgulu ince cidarlı tüplerin çarpışma davranışlarının sayısal olarak incelenmesi
Çetin, Erhan (Hitit Üniversitesi Fen Bilimleri Enstitüsü, 2020)İnce cidarlı tüpler pasif araç güvenlik sistemlerinde çarpışma enerjisi sönümleyici elemanlar olarak sıklıkla kullanılmaktadır. Son yıllarda oldukça popüler olan metal eklemeli imalat teknolojileri ince cidarlı metal ... -
Li-doped fullerene pillared graphene nanocomposites for enhancing hydrogen storage: A computational study
Deniz, Celal Utku; Mert Balaban, Hümeyra; Baykasoğlu, Cengiz (Elsevier, 2021)Hydrogen physisorption in lithium doped fullerene pillared graphene nanocomposites (Li-FPGNs) having tunable pore structures were examined under different temperature and pressure conditions via grand canonical Monte Carlo ... -
Monte Carlo simulations of hydrogen adsorption in fullerene pillared graphene nanocomposites
Mert Balaban, Hümeyra; Deniz, Celal Utku; Baykasoğlu, Cengiz (Taylor & Francis Ltd, 2020)The objective of this study is to investigate the hydrogen storage performances of three-dimensional periodic fullerene pillared graphene nanocomposites (FPGNs) consisting of covalently bonded fullerene units between ... -
Multi-objective crashworthiness optimization of lattice structure filled thin-walled tubes
Baykasoğlu, Adil; Baykasoğlu, Cengiz; Çetin, Erhan (Elsevier Ltd, 2020)Thin-walled tubes have been mostly used in passive vehicle safety systems as crash energy absorber. With the use of additive manufacturing technology, it is possible to produce novel filler materials to further enhance the ... -
Multiple objective crashworthiness optimization of circular tubes with functionally graded thickness via artificial neural networks and genetic algorithms
Baykasoğlu, Adil; Baykasoğlu, Cengiz (SAGE Publications Ltd, 2017)The objective of this paper is to develop a multiple objective optimization procedure for crashworthiness optimization of circular tubes having functionally graded thickness. The proposed optimization approach is based on ... -
Optimal design of truss structures using weighted superposition attraction algorithm
Baykasoğlu, Adil; Baykasoğlu, Cengiz (Springer, 2020)In this paper, a recently developed swarm based metaheuristic algorithm called weighted superposition attraction (WSA) is implemented for sizing optimization of truss structures first time in literature. The WSA algorithm ... -
Predicting energy absorption parameters of aluminum lattice structures filled tubes via artificial neural networks
In this paper, the energy absorption parameters of aluminum body centered cubic lattice structures filled thin-walled tubes under axial loading are predicted via artificial neural networks (ANNs). Different tube thickness, ... -
Predicting microstructure evolution during directed energy deposition additive manufacturing of Ti-6Al-4V
Baykasoğlu, Cengiz; Akyıldız, Öncü; Candemir, Duygu; Yang, Qingcheng; To, Albert C. (American Society of Mechanical Engineers (ASME), 2018)Laser engineering net shaping (LENS) is one of the representative processes of directed energy deposition (DED) in which a moving heat source having high-intensity melts and fuses metal powders together to print parts. The ... -
A process-microstructure finite element simulation framework for predicting phase transformations and microhardness for directed energy deposition of Ti6Al4V
Baykasoğlu, Cengiz; Akyıldız, Öncü; Tunay, Merve; To, Albert C. (Elsevier, 2020)This paper presents a process-microstructure finite element modeling framework for predicting the evolution of volumetric phase fractions and microhardness during laser directed energy deposition (DED) additive manufacturing ... -
Quasi-static axial crushing behavior of thin-walled circular aluminum tubes with functionally graded thickness
Erdin, Muhammed Emin; Baykasoğlu, Cengiz; Tunay Çetin, Merve (Elsevier Ltd, 2016)In this paper, the crushing behavior of circular aluminum thin-walled tubes with functionally graded thickness (FGT) are investigated experimentally. To this aim, three different thickness grading patterns are introduced ... -
Rollover crashworthiness analysis of a railroad passenger car
Rollover of railroad passenger cars is one of the most serious accidents having high rates of injuries and fatalities. Therefore, the railroad passenger car structures should satisfy the rollover crashworthiness requirements ... -
Sandwiched graphene-fullerene composite: A novel 3-D nanostructured material for hydrogen storage
Öztürk, Zeynel; Baykasoğlu, Cengiz; Kırca, Mesut (Elsevier Ltd, 2016)The main objective of this paper is to investigate hydrogen storage capacity of a novel carbon based nanoporous material composition that is built up by covalently sandwiched fullerene units between parallel graphene sheets. ... -
Tensile behavior of heat welded CNT network structures
Çelebi, Alper Tunga; Kırca, Mesut; Baykasoğlu, Cengiz; Muğan, Ata; To, Albert C. (Elsevier, 2014)In this study, a computational investigation on the mechanical properties of random carbon nanotube (CNT) networks is reported. For this purpose, atomistic models of 3-D CNT network structures are generated by an automated ... -
Thermal-stress analysis of ceramic laminate veneer restorations with different incisal preparations using micro-computed tomography-based 3D finite element models
Çelebi, Alper Tunga; İçer, Esra; Mert Eren, Meltem; Baykasoğlu, Cengiz; Muğan, Ata; Yıldız, Esra (Elsevier Ltd, 2017)Main objective of this study is to investigate the thermal behavior of ceramic laminate veneer restorations of the maxillary central incisor with different incisal preparations such as butt joint and palatinal chamfer using ... -
Weighted superposition attraction-repulsion (WSAR) algorithm for truss optimization with multiple frequency constraints
Baykasoğlu, Adil; Baykasoğlu, Cengiz (Elsevier Science Inc, 2021)Structural optimization of truss structures under multiple frequency constraints is a highly nonlinear and complex optimization problem with non-convex solution space. The optimization method used to solve mentioned problem ... -
Yönlendirilmiş enerji bırakımlı eklemeli imalat süreçlerinde meydana gelen metalurjik faz dönüşümlerinin sonlu elemanlar yöntemi kullanılarak benzetilmesi
Baykasoğlu, Cengiz; Akyıldız, Öncü; Tunay, Merve (2019)Son yıllarda popülerlik kazanmış olan eklemeli imalat teknolojileri kullanılarak önceden imalatı veya tamiri oldukça zor veya imkânsız olan yapısal parçalar metalik, seramik, polimer ve karma malzemeler kullanılarak imal ...