Makale Koleksiyonu by İSTE Author "Ünal, Emin"
Now showing items 1-11 of 11
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Design of a linear to circular polarization converter integrated into a concrete construction for radome applications
Öztürk, Murat; Sevim, Umur Korkut; Altıntaş, Olcay; Ünal, Emin; Akgöl, Oğuzhan; Karaaslan, Muharrem; Sabah, Cumali (Cambridge University Press, 2021)In this paper, we present a linear to circular polarization converter integrated in a concrete structure to eliminate signal transmission problem originated from the concrete buildings in microwave regime. Two polarization ... -
Determination of physical properties of concrete by using microwave nondestructive techniques
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Applied Computational Electromagnetics Society (ACES), 2018)Determination of the electrical properties of concretes with different water/cement ratios and investigation of the relationship between their electrical and mechanical properties is a promising technique towards improving ... -
An electromagnetic non-destructive approach to determine dispersion and orientation of fiber reinforced concretes
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Karaaslan, Muharrem; Ünal, Emin (Elsevier, 2019)Including fibers in concretes improves their mechanical properties such as flexural strength, impact load resistance and limited crack propagation. The dispersion, orientation and types of the fibers placed in the concretes ... -
Experimental verification of phononic crystal based on square arrays of cylindrical holes against seismic vibrations in full-scale systems: modeling, sensing and signal processing of seismic vibrations
Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Karaaslan, Muharrem; Özer, Zafer; Akgöl, Oğuzhan; Mert, Bayram Ali; Ünal, Emin (Springer, 2021)In this study, phononic crystals reducing the earthquake effects will be determined and prototypes will be constructed which can give the opportunity to reduce the effects of seismic waves. Furthermore, test results will ... -
Experimental work on mechanical, electromagnetic and microwave shielding effectiveness properties of mortar containing electric arc furnace slag
Öztürk, Murat; Akgöl, Oğuzhan; Sevim, Umur Korkut; Karaaslan, Muharrem; Demirci, Mustafa; Ünal, Emin (Elsevier, 2018)It is well known that one of the widely used structural materials is ordinary cement mortar. Whereas the mechanical properties are sufficient as structural materials, its shielding effectiveness and prevention properties ... -
Farklı Konfigürasyonlarda Çelik Metamalzemeler Kullanarak Sismik Etkilerin Azaltılması
Kaçın, Selçuk; Sevim, Umur Korkut; Öztürk, Murat; Karaaslan, Muharrem; Demirci, Mustafa; Akgöl, Oğuzhan; ünal, Emin; Özer, Zafer; Başar, Mustafa Tunahan; Alkurt, Maide Erdoğan; Alkurt, Fatih Özkan; Mert, Bayram Ali; Kaya, Şeyda (Türk deprem araştırma dergisi (Online), 2021)Depremlerin yıkıcı etkilerini azaltmak için yapılan çalışmalar, son zamanlarda üzerinde durulan araştırma konuları arasındadır. Bu çalışmada, kare, üçgen, sinüs ve daire olmak üzere dört farklı saha dizisinde çelik met ... -
Investigation of the mechanic, electromagnetic characteristics and shielding effectiveness of concrete with boron ores and boron containing wastes
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Elsevier, 2020)In this study, mechanical properties electromagnetic (EM), and shielding effectiveness of concrete samples containing boron product and wastes was investigated in details. In order to increase shielding effectiveness of ... -
Metamaterial sensor application concrete material reinforced with carbon steel fiber
Dalgaç, Şekip; Karadağ, Faruk; Ünal, Emin; Özkaner, Vedat; Bakır, Mehmet; Akgöl, Oğuzhan; Sevim, Umur Korkut; Delihacıoğlu, Kemal; Öztürk, Murat; Karaaslan, Muharrem; Sabah, Cumali (World Scientific Publ Co Pte Ltd, 2020)In this paper, a rectangular split ring resonator-type metamaterial (MTM) sensor application is demonstrated in order to examine concrete materials. First, different types of concrete materials including carbon steel fiber ... -
A Nondestructive Method for Determining Fiber Content and Fiber Ratio in Concretes Using a Metamaterial Sensor Based on a V-Shaped Resonator
Akgöl, Oğuzhan; Ünal, Emin; Bağmancı, Mehmet; Karaaslan, Muharrem; Sevim, Umur Korkut; Öztürk, Murat; Bhadauria, Avanish (Springer, 2019)A micro sensor based on a V-shaped resonator (VSR) is implemented for the purpose of determining fiber content and ratio in construction materials as a nondestructive method. Concrete is investigated as the construction ... -
Optimizing the Gain and Directivity of a Microstrip Antenna with Metamaterial Structures by Using Artificial Neural Network Approach
Sağık, Metin; Altıntaş, Olcay; Ünal, Emin; Özdemir, Ersin; Demirci, Mustafa; Çolak, Şule; Karaaslan, Muharrem (Springer, 2021)The purpose of this study is to improve the gain and directivity of the microstrip patch antenna by means of metamaterial (MTM) structures. As it is known, antennas have power densities in a certain direction, and the ... -
Seismic metamaterials for low-frequency mechanical wave attenuation
Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Mert, Bayram Ali; Özer, Zafer; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Springer, 2021)In this study, a triangular array of cylindrical holes was shown to function as a local resonator to seismic metamaterials against the vibration generator loading in the geophysics concept. The field test showed that the ...
