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    Evaluating the Parameters for Electrode Wear Rate in Electrical Discharge Machining of H13 Steel
    (Selçuk Üniversitesi, 2023 Nisan) Yaka, Harun; Malo, Yusuf
    In this study, H13 steel, which is widely used in mold making, was processed by the electroerosion method. A copper electrode with a diameter of 12 mm was used in the experiments. Taguchi L18 experiment list was created by using 3 different cutting parameters. At the end of the experiments, electrode wear rates (EWR) were found by controlling the initial and final weights of the electrode. Ampere (A) was the most effective parameter for electrode wear. According to the analysis of variance (ANOVA) results, Amper's contribution rate was 63.99%. At the end of the study, Regression analysis was performed, and a mathematical model was developed for the electrode wear rate.
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    Friction Stir Welding (FSW) and Friction Stir Spot Welding (FSSW) on polycarbonates: A review
    (Selçuk Üniversitesi, 2024) Aslan, İbrahim; Yaka, Harun
    In recent years, it is seen that the use of polymers has become widespread in the field of manufacturing. This means that polymers are as important as metals in the manufacturing sector. Polycarbonates, which are thermoplastic polymers, are widely used, especially in automotive, construction and health fields. Today, it is well known that polycarbonate can be bonded in a variety of ways, including bonding and welding. In this study, an investigation was made on the application of polycarbonate polymers in friction stir welding (FSW) and friction stir spot welding (FSSW), which can properly join the same or different types of materials and have economic advantages. In this paper, the studies in the literature on the joining of polycarbonate materials with each other or with other materials by FSW and FSSW are reviewed and discussed by specifying the production parameters and details used. Thus, a single point of reference is provided for researchers working in the field. In this paper, useful findings have been shared and useful for researchers to get an idea about the joinability of polycarbonate polymers with FSW and FSSW with different materials that have not been tried before.