Bu çalışmada kokil kalıba döküm yöntemiyle üretilen Zn-15Al-3Cu-1Si alaşımına T5 ve T7 ısıl işlemleri uygulandı. Alaşımın dökülmüş ve ısıl işlem görmüş durumlardaki numunelerinin içyapıları taramalı elektron mikroskobu (SEM) ve enerji dispersif spektrometresi …
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520 results for “Differential transform method, transmission conditions, approximation solution”
Ahşap; geçmişten günümüze kullanımı tercih edilen doğal bir malzemedir. Doğal yapısı nedeniyle kullanıldığı mekân veya ürünlerde sağladığı rahatlık ve huzur hissi ile estetik katkıları başka bir hammadde ile doldurulamamıştır. Mobilyanın yapımında kullanılacak…
This study aims to investigate the effect of pitching motion of a NACA 0012 airfoil on the lift and drag coefficients at different reduced frequencies for a flow over the airfoil at Reynolds number of 5x105. A two-dimensional computational analysis was perform…
The cell temperature of a photovoltaic (PV) module increases with increasing irradiation rate, and this increment adversely affects the output power or the electrical efficiency of the PV module. Therefore, in the present study, a series of experiments are p…
Bu çalışmada, yedeksiz tamir edilebilir tek üniteden oluşan bir sistem incelenmiştir. Ünite çalışmaya başlar fakat bir süre sonra bozulur ve tamire gider. tamirden sonra tekrar sisteme geri döner ve çalışmaya başlar. Bu sistem için iki durum mevcuttur. Birin…
This study was focused on earthquake induced tsunamis to prepare source parameters for accurate estimations of what would be the maximum heights and the shortest time of the arrival of the tsunami waves in Aegean Sea coastal areas of Turkey. Since the earthq…
Visually, the space, art branches of the body with the most self-finds, live. Cinema is also one of the most comprehensive arts offering to the designers. Science fiction films, which are one of the most impressive film genres, are seen as the most important…
It is known that 25% to 40% of fresh fruit and vegetables produced is discharged rot before they reach consumers in turkey. In order to prevent this deterioration and maintain quality, it is possible to maintain a certain period of time in cold storage condi…
In this study, a thermoelectric generator (TEG) system is designed for the generation of electricity from solar energy. A temperature difference between surfaces of TEG must be achieved for electricity generation. Heating is provided by a solar-powered two-p…
Rubble of destroyed buildings in Turkey is a growing environmental problem, in Ankara only, there are 12 landfills to collect and store them. Adobe is a world common building material; many studies inferred its environmental qualities. This study examines th…
Field crops such as barley, wheat, sugar beet and geen lentils constituted the largest share of agricultural activities in Yozgat province which majority of livelihood is agriculture. Converge and extend of horticultural crops and their cultivation is very i…
Gelişen teknoloji ve artan nüfusun etkisiyle enerji tüketimi giderek artmaktadır ve bu durum tüm dünyada olduğu gibi ülkemizde de önemli bir problem olarak karşımıza çıkmaktadır. Fosil enerji kaynakları gün geçtikçe azalmaktadır ve bu nedenle araştırmacılar …
Complexity in the behavior of asphalt binders are further escalated with geopolymer (fly ash and the alkali liquid) modification thus, making it difficult to predict the performance of the binder accurately. This study employs artificial neural network model…
Cherry trees do not reproduce from seed. Desirable cultivars are grafted onto rootstocks which is generally clonally propagated. Many cherry rootstocks have been released around the world and a wide range of cherry rootstocks is available for growers. The cu…
Renewable energy can be produced by using kinetic energy of the flowing water such as rivers, ocean currents and tidal flows. The kinetic energy can be transformed to the power by hydrokinetic turbines. There are many different designs of hydrokinetic turbin…
In industrial robots, projected torque is increasing depending on the extending reach length and payload. This requires selection of powerful engines particularly on the second axis. Since arm's rigidity becomes more important as the expected positioning preci…
Contact pressure is very critical for wear test. In order to make true wear experiment, counter body, surface, wear load, surface roughness, and the hardness of materials should be selected correctly. Maximum contact pressure forms at hertz point. In this stud…
Nowadays, rapid developments in the field of information technology and the use of the internet are becoming widespread depending on the living conditions we are in. The young population has become an important part of the lives of university students in parti…
In this study, environmental conditions and algal structure of Sevindikli and Sipahiler Ponds were investigated. For the study, water samples were taken seasonally in January -2018 March, water quality, flora and fauna and other environmental parameters were o…
Increasing number of motor vehicles together with economic development brings serious air pollution problems. Especially, Particle Matter emissions from Internal Combustion Engines are difficult to control and highly dangerous for human health. Both Europa and…