ÖZETMalzemenin çekme gerilmesinin değeri çeşitli konularda bilgi vermektedir. Örneğin
malzemenin seçimi, kalitesi ve farklı kuvvetler altındaki davranışı hakkında bilgi verir. Bu çalışmada akım darbeli gaz altı ark kaynak yöntemiyle kaynak yapılmış 53 numunenin çekme gerilmeleri incelenmiştir. Kullanılan deney verileri bir literatür çalışmasından seçilmiştir. Çekme gerilmesi ve bu değeri etkileyen sekiz giriş değeri için birçok matematiksel model yazılmıştır. Matematiksel modellerden R² training, R² testing, and R² validation değerleri hesaplanmış ve en iyi sonucu veren matematiksel model seçi ...Daha fazlası
ABSTRACTIn this study, the effect of local heating on the weld line formation in a plastic injection mold was studied by using acrylonitrile butadiene styrene (ABS) and polypropylene 20 glass fiber (PP GF20) plastic material. An aluminum 6000 insert was fitted into the injection mold to set temperatures for local heating. The three parameters with three levels were selected for injection molding process parameters as insert temperature, mold temperature, and melt temperature and to produce mechanical tests specimens with weld lines and non-weld lines. L9 orthogonal array was arranged for the T ...Daha fazlası
ABSTRACTThe oil and natural gas reside in microscopic pores of subsurface rock layers called a reservoir rock. Besides there always at least two phases exist in oil and gas reservoirs. Therefore, the flow and displacement of oil into the production wells are influenced significantly by capillary forces. Due to the capillary and surface forces, the recovery of oil always remains at low percentages usually between 20 to 40. In order to increase the recovery factor several secondary and enhanced oil recovery techniques have been developed and implemented. The two secondary recovery methods namely ...Daha fazlası
ABSTRACTOrganic-inorganic (hybrid) dental filling composite resins are becoming increasingly popular as a result of their aesthetic quality, good mechanical properties, optimum wear resistance, and ease of use. However, dental composites have relatively high brittleness, low strength, and durability, which limits applications. Dental filling composites containing nanoparticles have been developed in recent years to address the drawbacks of dental composites. These composites have high filling percentages and provide high strength and durability to the resin. However, the characteristics of the ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.