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    Öğe
    Aluminum Forming by Vaporizing Foil Actuator Welding
    (2023) Önder, Ganime Tuğba; Kulekci, Mustafa Kemal
    Aluminum, has a wide range of uses, from industry to medical industrial products such as automotive, defense-aviation, and space. Aluminium has become a preferred material in applications where weight needs to be reduced. It is also used as a material in metal cladding and shaping applications. However, the high thermal conductivity coefficient of aluminum may cause some difficulties in the production process. These difficulties due to thermal conductivity may not allow to manufacture of desired products. In this study formability of aluminum with vaporizing foil actuator welding (VFAW) has been investigated as an alternative process to the traditional and solid state welding processes. By using different voltage values and separation distance parameters, the effects of these parameters on the formability of aluminum and copper sheet metal pairs with VFAW were examined experimentally. Experimental data show that voltage value is an important parameter in the VFAW process where a DC capacitor is used. In the VFAW process, where a 375 V voltage value is used, it has been determined that welding occurs in processes performed with three different separation distances (0.4 mm- 0.9 mm -1.5 mm). It was determined that 0.4 mm and 0.9 mm separation distances were effective in joining Al/Cu metal sheets with 0.1 mm thickness.
  • Küçük Resim
    Öğe
    Folyo aktüatör kaynak cihazı tasarımı, prototip imalatı ve uygulamaları
    (2023) Önder, Ganime Tuğba
    Buharlaştırılmış folyo aktüatör kaynağı küçük ölçekli uygulamalar için ön plana çıkan, geleneksel kaynak metotlarının sınırlılıklarını aşmayı başaran bir imalat yöntemidir. Özellikle farklı metallerin sorunsuz birleştirilmesini sağlar ve bu yönüyle üstün bir imalata izin verir. Bu tez çalışmasında, katı hal kaynak yöntemlerinden birisi olan ve dünyada yeni bir patlatma kaynak yöntemi olarak geliştirilen, buharlaştırılmış folyo aktüatör kaynağı için bir prototip tasarlanarak imal edilmiş ve deneysel çalışmalar yapılmıştır. Bu tür inovatif imalat yöntemleri, endüstriyel uygulamalarda ve farklı metal birleştirme ihtiyaçlarında önemli bir rol oynamaktadır. Çalışmamız, imalat teknolojileri araştırmalarına ve bu yeni teknolojinin gelişimine katkı sağlaması açısından önem taşımaktadır. İmal edilen prototipte, doğru akım (DC) kapasitörleri aracılığı ile depo edilen elektrik enerjisi, birleştirme bölgesine yönlendirilerek, aktüatör folyo buharlaştırılmış ve folyo üzerinde istiflenen malzemeler için kaynak işlemi gerçekleştirilmiştir. Kaynaklanmış numunelerde, SEM analizi sonuçları değerlendirilerek yorumlanmıştır. Ayrıca yeni bir teknik olan buharlaştırılmış folyo aktüatör kaynağı için güvenli çalışma adımlarını belirlemek amacıyla risk analizi yapılmış ve yorumlanmıştır.
  • [ X ]
    Öğe
    Mathematical Modeling and Optimization of Milling Parameters in AA 5083 Aluminum Alloy
    (2019) Basar, Gokhan; Kahraman, Funda; Önder, Ganime Tuğba
    An experimental study was carried out to determine the effect of different cutting parameters such as feed,spindle speed and depth of cut on surface roughness in face milling of 5083 aluminum alloy. The mathematicalmodel was developed to estimate surface roughness using Response Surface Methodology. The significantcontribution of cutting parameters was detected by analysis of variance. Statistical analysis indicated that feedand spindle speed have the most considerable influence on surface roughness. After developed mathematicalmodel, desirability function analysis was performed to minimize the surface roughness. The lowest surfaceroughness (0.41 µm) was acquired at a feed of 3008 mm/min, a spindle speed of 5981 rpm and a depth of cut of0.54 mm.
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    Öğe
    Vaporizing Foil Actuator Welding Arc Problems and Precautions
    (2024) Önder, Ganime Tuğba; Kulekci, Mustafa Kemal
    The management of the \"arc\" has an important place in welding methods made with electric discharge and in cases where the arc is not managed correctly, important technical and environmental problems may occur. Vaporizing foil actuator welding (VFAW) is a novel welding method developed particularly for joining metals and operates on the principle of electrical discharge. This study describes the welding prototype of vaporized foil actuator welding and outlines technical changes made during the increase in energy levels. The locations, causes, preventive interventions, and solution proposals for arc problems occurring during the welding process are addressed. Welding operations must be carried out safely and comprehensively. Alongside the welding method, potential safety issues should be identified. Necessary precautions must be taken before, during, and after welding. The safety of the welding method can be ensured by eliminating specific risks.
  • [ X ]
    Öğe
    Vaporizing foil actuator welding prototype manufacturing and applications risk analysis
    (2023) Önder, Ganime Tuğba; Kulekci, Mustafa Kemal
    This study was conducted to examine risk levels for Vaporizing Foil Actuator Welding (VFAW) prototype manufacturing and applications. A risk analysis was carried out by using the L-type matrix method to detect hazards and risks in newly developing VFAW applications. 60 risks were identified for VFAW, 37 of which were high and 23 were moderate. To reduce the risk and occupational accidents to the lowest possible level; a measuring instrument that can continuously monitor current and voltage values, a remote detonation system and a discharge mechanism have been added to the prototype system. Thanks to the measures taken the situations that may result in serious accidents, fire, explosion, loss of limb, and even death that may occur during the experiment have been brought under control and VFAW applications have been made safer.