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We produced RE-123 infiltrated by Sm123 superconductors by the melt growth method. The samples have been investigated in terms of X-ray diffraction (XRD)analysis, AC susceptibility, levitation force, and a magnetic stiffness calculation. The X-ray diffraction analysis showed that the Sm123 and Y123 phases were insufficiently grown at the selected sintering temperature of 1040 °C. The transition temperature of the IP Sample is 94.28 K from the AC Susceptibility (at 1 KHz and 4 Oe applied AC field)measurement. The magnetic stiffness was calculated using our newly designed vertical magnetic levitation force measurement system. It has a Nb-Fe-B permanent magnet (~0.5T)at 77 K with the Zero Field Cooled process. The magnetic stiffness was calculated using the data of the levitation force. The descending experimental results showed that the most significant F 0 was contained in the sample I5 (F 0 = 9.034 N)and the largest constant b value was determined in the sample IP (b = 0.3320 mm -1 ). But in the ascending results, the most significant F 0 is 8.604 N, and the largest constant b is 0.3047 mm -1 , both calculated in the IP sample. Considering the oxygen content effects on the magnetic stiffness, one can infer that it has been positively affected by an increase in the Sm123 infiltration. These results indicatethat the produced samples could be applied to bearing systems, magnetic sensors and other technological applications. © 2019 The Physical Society of the Republic of China (Taiwan), This research received financial support from the Research Fund of Niğde Ömer Halisdemir University (project no: FEB 2012/09 ).

In recent years, there has been a great deal of interest in lightweight vehicle design due to regulations about reducing fuel consumption and emissions. Lightweight design of vehicle components is one of the most important research topics in vehicle design. Developing the optimum structure in the early stages of design process is very important for minimizing the vehicle weight and production costs. In this paper, an automobile hinge component has been developed using PA66 GF60 glass fiber-reinforced polyamide composite materials instead of conventional steel. The automobile hinge component has been conceived using computer aided design software. Topology optimization was made under specific loadings subject to the constraints of finite element method analysis. As a result of this study, optimum dimensions of the component have been obtained and the weight of the component has been reduced via structural topology optimization techniques while satisfying displacement and stress conditions. The results show that composite materials are an important alterative in lightweight vehicle design.

In this work, we have especially focused on investigating the nano Boron doping effect into the Sm-Ca-Cu-O Ceramic [ 1 , 2 ]. The samples produced suitable with nominal composition selected as Sm1.75 Ca (2.20-x) B x Cu 3.4 O y (x = 0.0; 0.4, 0.8 and 1.0). This effect investigated through the TG/DTA, XRD, and SEM results. Lattice parameters (a, b, and c) got from the crystallographic knowledge, and they carefully calculated. The crystallographic growth seen because of the changing at the intensity of x-ray diffraction peaks. Increasing the Boron doping in the matrix have produced the crystal growth at especially SmBP and SmB10 samples, peaks intensity at 29° (220) Miller indices, has increased from 1.602 to 10.883, respectively. Namely, with increasing B-doping resulted in a transformation of the phase. In this way (at Boron free sample) it has achieved the orthorhombic phase transformation to the tetragonal phase created in the matrix.

Bu çalışmada, Ankara ili, Polatlı ilçesi, Temelli beldesine bağlı Kuşçu ve Macun köyleri arasında yüzlek veren Paleojen yaşlı birimlerin, Pelecypoda ve Gastropoda sınıfına ait örneklerle paleontolojikve biyostratigrafik özellikleri araştırılmıştır. Macun köyü batısından Kuşçu köyü doğusuna doğru alınan7 adet ölçülü stratigrafik kesit sonucu toplam 52 metre kalınlıkta istif ölçülmüştür. İstifte Pelecypodasınıfına ait 7 ve Gastropoda sınıfına ait biri yeni olmak üzere 16 tür tanımlanmıştır. Yapılan çalışmada, tanımlanan faunanın paleocoğrafik ve stratigrafik yayılımı incelendiğinde Tanesiyençağına ait olup, Kırkkavak Formasyonuna dahil edilmesinin uygun olacağı sonucuna varılmıştır. Faunanınpaleoekolojik özelliklerine göre de ortamın kıyı fasiyesinde geliştiği ve sığ, sıcak bir deniz özelliğisunduğu saptanmıştır.