This study is aimed at obtaining a relationship between the values defining bead geometry and the... more This study is aimed at obtaining a relationship between the values defining bead geometry and the welding parameters and also to select optimum welding parameters. For this reason, an experimental study has been realized. The welding parameters such as the arc current, arc voltage, and welding speed which have the most effect on bead geometry are considered, and the other parameters are held as constant. Four, three, and five different values for the arc current, the arc voltage, and welding speed are used, respectively. So, sixty samples made of St 52-3 material were prepared. The bead geometries of the samples are analyzed, and the thickness and penetration values of the weld bead are measured. Then, the relationship between the welding parameters is modeled by using artificial neural network (ANN) and neurofuzzy system approach. Each model is checked for its adequacy by using test data which are selected from experimental results. Then, the models developed are compared with rega...
In this study, a three-dimensional dynamic model o f a milling machine is proposed. The cutting f... more In this study, a three-dimensional dynamic model o f a milling machine is proposed. The cutting forces of the face milling process were obtained according to the cutting parameters by means of computer simulations and experiment. Th e cutting forces excited the dynamic model of the system. Relative displacements of the contact point of the cutting tool and the workpiece were obtained by using forced vibration a nalysis. These displacements affected machining accuracy of the milling machine. Therefor , adial and axial electromagnetic bearings were designed for the active control of th e system and they were adapted on the spindle of the milling machine. Thereby the electro magnetic force produced around the rotating spindle reduced vibration amplitude of the cutting tool. The system was operated with and without active control and both these cases were co mpared. It was revealed that active control diminished cutting tool vibrations and improved mac hining performance.
In this study, at first the applications of Rapid Process (RP) in Turkey are investigated in gene... more In this study, at first the applications of Rapid Process (RP) in Turkey are investigated in general. After that, RP studies on Automotive manufacturing sector are investigated. The available cases on RP in Turkey are evaluated comparatively with other ...
In this study, a distributed multi-agent system (DMAS) for sheet metal forming is proposed. The s... more In this study, a distributed multi-agent system (DMAS) for sheet metal forming is proposed. The system consists of functional agents such as die design agent, knowledge management agent, validation and verification agent, product description agent, operation planning ...
This study explains an Internet-Based Mechatronic Laboratory which has been setup as a solution f... more This study explains an Internet-Based Mechatronic Laboratory which has been setup as a solution for problems encountered in the practical training of technical education. The study consists of five sections. In the first section, the problem is defined and the ...
In this study, an intelligent system model that can evaluate experimental material properties and... more In this study, an intelligent system model that can evaluate experimental material properties and safety factors is developed. The model contains Artificial Intelligence Technologies such as Artificial Neural Network (ANN) and Fuzzy Logic. It consists of sub modules into interaction. Also, the model can obtain more precision values than interpolation techniques used to classical design. The study contributes to define safety factors, design criterions and safety stress according to a new approach based on information technologies. So, this study can be seen as one of the sub modules of Intelligence Multi Agent System and it can be integrated with Multi Agent System Model for design. Also, it can be used for classical design studies so that results can be quickly obtained. It is expected that this approach will be widely used by designers.
... Machine Design. Date Published: 2004-03-08. Paper Number: 2004-01-1250. DOI: 10.4271/2004-01-... more ... Machine Design. Date Published: 2004-03-08. Paper Number: 2004-01-1250. DOI: 10.4271/2004-01-1250. Author(s): Durmus Karayel - Sakarya Univ. Sinan Serdar Ozkan - Sakarya Univ. Fahri Vatansever - Sakarya Univ. Abstract. ...
Traktörler tarım sektöründe çok yaygın bir şekilde kullanılmakta olan ara&c... more Traktörler tarım sektöründe çok yaygın bir şekilde kullanılmakta olan araçlardır. Müşteri talepleri ve sektördeki teknolojik eğilimler değerlendirildiğinde, traktör kullanım esnasında sürücünün en fazla zorlandığı ve zaman kaybettiği noktalardan birisinin mekanik kumanda kol sistemleri olduğu ortaya çıkmıştır. Bununla beraber, çalışmış olduğum traktör fabrikasındaki Kabinli tarla modeli traktörlerimizde direksiyon altı shuttle kolu sürücünün sol tarafta bulunmaktadır. Ayrıca Kabinli traktörümüzde bulunan debriyaj sistemi hidroliktir. Debriyaja tam basılmadan shuttle kolu hareket etmemektedir. Ayrıca kabinde içerisinde bulunan yan yolcu koltuğu da sürücünün sol tarafında bulunmaktadır. Bu durumda kabin içerisinde sürücü ile bir yan yolcu olduğunda direksiyon altı shuttle kolu ergonomik olarak kullanımı uygun değild...
This study aims to design a new energy absorber (damper) to protect structures against impact loa... more This study aims to design a new energy absorber (damper) to protect structures against impact loads and against sudden transition from resonance region. It is an adaptation of interference fit process in machine elements for designing of damper based on the principles of Coulomb friction. There are a lot of investigations of dampers based on Coulomb friction. In this study, pre-stress is obtained by interference fit. It is different from other studies and is original in this respect. There is a contact pressure between the shaft and the hub in the interference fit joints and frictional force occurs with the beginning of the relative motion in the axial direction. Thus, the damaging energy is absorbed from the system. The quantity of damping ratio depends directly on the tolerances of the shaft and the hub and can be easily adjusted. This is another advantage of the friction damper with interference fit compared to similar dry friction dampers.
Öz Teknolojinin gelişmesine paralel olarak kamera sistemlerinde yüksek düzeyde kaliteyi öngören l... more Öz Teknolojinin gelişmesine paralel olarak kamera sistemlerinde yüksek düzeyde kaliteyi öngören lensler tasarlanmıştır. Ancak bu lensler yapısal olarak her ne kadar görüntü kalitesinde başarılı olsalar da üzerinde tahribat meydana gelmiş görüntülerin ayırt edilmesinde herhangi bir ek özellik mevcut değildir. Esasen bu tür tahribatların giderilmesi için yapay zeka teknikleri kullanmak mümkündür. Bu çalışmada, yapay sinir ağları kullanarak üzerinde tahribat meydana gelmiş görüntülerin morfolojik görüntü işleme teknikleri ile birleştirilerek tahribatın derecesine göre orijinal görüntüye yakınsaması ele alınmıştır. Ayrıca bu amaca ulaşmak ve kullanımı kolaylaştırmak amacıyla geliştirilen arayüz sayesinde eğitim ve test verilerinin yanı sıra ağı oluşturmak için kullanılacak parametrelerin kolaylıkla hazırlanan algoritmaya entegrasyonu sağlanmaktadır. Abstract The lenses providing high quality for camera systems are designed as parallel with developing technologies. These lenses do not have any additional functionality to distinguish damaged images while they are successful with regard to image quality. Essentially, artificial intelligence techniques can be used to eliminate such damaged cases. In this study, convergence to original image of the damaged images according to the degree of damage using together artificial neural networks and morphological image processing techniques are discussed. Also, it is provided to be integrated training and test data with used algorithm thanks to developed interfaces to achieve goal and to facilitate use. In addition, this interface is used to be entered the training parameters to the system.
This study is aimed at obtaining a relationship between the values defining bead geometry and the... more This study is aimed at obtaining a relationship between the values defining bead geometry and the welding parameters and also to select optimum welding parameters. For this reason, an experimental study has been realized. The welding parameters such as the arc current, arc voltage, and welding speed which have the most effect on bead geometry are considered, and the other parameters are held as constant. Four, three, and five different values for the arc current, the arc voltage, and welding speed are used, respectively. So, sixty samples made of St 52-3 material were prepared. The bead geometries of the samples are analyzed, and the thickness and penetration values of the weld bead are measured. Then, the relationship between the welding parameters is modeled by using artificial neural network (ANN) and neurofuzzy system approach. Each model is checked for its adequacy by using test data which are selected from experimental results. Then, the models developed are compared with regard to accuracy. Also, the appropriate welding parameters values can be easily selected when the models improve.
This study is aimed at obtaining a relationship between the values defining bead geometry and the... more This study is aimed at obtaining a relationship between the values defining bead geometry and the welding parameters and also to select optimum welding parameters. For this reason, an experimental study has been realized. The welding parameters such as the arc current, arc voltage, and welding speed which have the most effect on bead geometry are considered, and the other parameters are held as constant. Four, three, and five different values for the arc current, the arc voltage, and welding speed are used, respectively. So, sixty samples made of St 52-3 material were prepared. The bead geometries of the samples are analyzed, and the thickness and penetration values of the weld bead are measured. Then, the relationship between the welding parameters is modeled by using artificial neural network (ANN) and neurofuzzy system approach. Each model is checked for its adequacy by using test data which are selected from experimental results. Then, the models developed are compared with rega...
In this study, a three-dimensional dynamic model o f a milling machine is proposed. The cutting f... more In this study, a three-dimensional dynamic model o f a milling machine is proposed. The cutting forces of the face milling process were obtained according to the cutting parameters by means of computer simulations and experiment. Th e cutting forces excited the dynamic model of the system. Relative displacements of the contact point of the cutting tool and the workpiece were obtained by using forced vibration a nalysis. These displacements affected machining accuracy of the milling machine. Therefor , adial and axial electromagnetic bearings were designed for the active control of th e system and they were adapted on the spindle of the milling machine. Thereby the electro magnetic force produced around the rotating spindle reduced vibration amplitude of the cutting tool. The system was operated with and without active control and both these cases were co mpared. It was revealed that active control diminished cutting tool vibrations and improved mac hining performance.
In this study, at first the applications of Rapid Process (RP) in Turkey are investigated in gene... more In this study, at first the applications of Rapid Process (RP) in Turkey are investigated in general. After that, RP studies on Automotive manufacturing sector are investigated. The available cases on RP in Turkey are evaluated comparatively with other ...
In this study, a distributed multi-agent system (DMAS) for sheet metal forming is proposed. The s... more In this study, a distributed multi-agent system (DMAS) for sheet metal forming is proposed. The system consists of functional agents such as die design agent, knowledge management agent, validation and verification agent, product description agent, operation planning ...
This study explains an Internet-Based Mechatronic Laboratory which has been setup as a solution f... more This study explains an Internet-Based Mechatronic Laboratory which has been setup as a solution for problems encountered in the practical training of technical education. The study consists of five sections. In the first section, the problem is defined and the ...
In this study, an intelligent system model that can evaluate experimental material properties and... more In this study, an intelligent system model that can evaluate experimental material properties and safety factors is developed. The model contains Artificial Intelligence Technologies such as Artificial Neural Network (ANN) and Fuzzy Logic. It consists of sub modules into interaction. Also, the model can obtain more precision values than interpolation techniques used to classical design. The study contributes to define safety factors, design criterions and safety stress according to a new approach based on information technologies. So, this study can be seen as one of the sub modules of Intelligence Multi Agent System and it can be integrated with Multi Agent System Model for design. Also, it can be used for classical design studies so that results can be quickly obtained. It is expected that this approach will be widely used by designers.
... Machine Design. Date Published: 2004-03-08. Paper Number: 2004-01-1250. DOI: 10.4271/2004-01-... more ... Machine Design. Date Published: 2004-03-08. Paper Number: 2004-01-1250. DOI: 10.4271/2004-01-1250. Author(s): Durmus Karayel - Sakarya Univ. Sinan Serdar Ozkan - Sakarya Univ. Fahri Vatansever - Sakarya Univ. Abstract. ...
Traktörler tarım sektöründe çok yaygın bir şekilde kullanılmakta olan ara&c... more Traktörler tarım sektöründe çok yaygın bir şekilde kullanılmakta olan araçlardır. Müşteri talepleri ve sektördeki teknolojik eğilimler değerlendirildiğinde, traktör kullanım esnasında sürücünün en fazla zorlandığı ve zaman kaybettiği noktalardan birisinin mekanik kumanda kol sistemleri olduğu ortaya çıkmıştır. Bununla beraber, çalışmış olduğum traktör fabrikasındaki Kabinli tarla modeli traktörlerimizde direksiyon altı shuttle kolu sürücünün sol tarafta bulunmaktadır. Ayrıca Kabinli traktörümüzde bulunan debriyaj sistemi hidroliktir. Debriyaja tam basılmadan shuttle kolu hareket etmemektedir. Ayrıca kabinde içerisinde bulunan yan yolcu koltuğu da sürücünün sol tarafında bulunmaktadır. Bu durumda kabin içerisinde sürücü ile bir yan yolcu olduğunda direksiyon altı shuttle kolu ergonomik olarak kullanımı uygun değild...
This study aims to design a new energy absorber (damper) to protect structures against impact loa... more This study aims to design a new energy absorber (damper) to protect structures against impact loads and against sudden transition from resonance region. It is an adaptation of interference fit process in machine elements for designing of damper based on the principles of Coulomb friction. There are a lot of investigations of dampers based on Coulomb friction. In this study, pre-stress is obtained by interference fit. It is different from other studies and is original in this respect. There is a contact pressure between the shaft and the hub in the interference fit joints and frictional force occurs with the beginning of the relative motion in the axial direction. Thus, the damaging energy is absorbed from the system. The quantity of damping ratio depends directly on the tolerances of the shaft and the hub and can be easily adjusted. This is another advantage of the friction damper with interference fit compared to similar dry friction dampers.
Öz Teknolojinin gelişmesine paralel olarak kamera sistemlerinde yüksek düzeyde kaliteyi öngören l... more Öz Teknolojinin gelişmesine paralel olarak kamera sistemlerinde yüksek düzeyde kaliteyi öngören lensler tasarlanmıştır. Ancak bu lensler yapısal olarak her ne kadar görüntü kalitesinde başarılı olsalar da üzerinde tahribat meydana gelmiş görüntülerin ayırt edilmesinde herhangi bir ek özellik mevcut değildir. Esasen bu tür tahribatların giderilmesi için yapay zeka teknikleri kullanmak mümkündür. Bu çalışmada, yapay sinir ağları kullanarak üzerinde tahribat meydana gelmiş görüntülerin morfolojik görüntü işleme teknikleri ile birleştirilerek tahribatın derecesine göre orijinal görüntüye yakınsaması ele alınmıştır. Ayrıca bu amaca ulaşmak ve kullanımı kolaylaştırmak amacıyla geliştirilen arayüz sayesinde eğitim ve test verilerinin yanı sıra ağı oluşturmak için kullanılacak parametrelerin kolaylıkla hazırlanan algoritmaya entegrasyonu sağlanmaktadır. Abstract The lenses providing high quality for camera systems are designed as parallel with developing technologies. These lenses do not have any additional functionality to distinguish damaged images while they are successful with regard to image quality. Essentially, artificial intelligence techniques can be used to eliminate such damaged cases. In this study, convergence to original image of the damaged images according to the degree of damage using together artificial neural networks and morphological image processing techniques are discussed. Also, it is provided to be integrated training and test data with used algorithm thanks to developed interfaces to achieve goal and to facilitate use. In addition, this interface is used to be entered the training parameters to the system.
This study is aimed at obtaining a relationship between the values defining bead geometry and the... more This study is aimed at obtaining a relationship between the values defining bead geometry and the welding parameters and also to select optimum welding parameters. For this reason, an experimental study has been realized. The welding parameters such as the arc current, arc voltage, and welding speed which have the most effect on bead geometry are considered, and the other parameters are held as constant. Four, three, and five different values for the arc current, the arc voltage, and welding speed are used, respectively. So, sixty samples made of St 52-3 material were prepared. The bead geometries of the samples are analyzed, and the thickness and penetration values of the weld bead are measured. Then, the relationship between the welding parameters is modeled by using artificial neural network (ANN) and neurofuzzy system approach. Each model is checked for its adequacy by using test data which are selected from experimental results. Then, the models developed are compared with regard to accuracy. Also, the appropriate welding parameters values can be easily selected when the models improve.
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