Mekanik bilyalı öğütmeyle yüksek etkinlikte fotokatalitik $TiO_2$ tozu ve nano boyutlu titanya sol üretimi

Photocatalytic properties of silver loaded titanium dioxide powders produced by mechanical ball milling Aysin, Başak; Öztürk, Abdullah; Park, Jongee; Department of Metallurgical and Materials Engineering (2012) Silver (Ag) was loaded to three different kinds (P-25, NT-22, and TiO(OH)2) of titanium dioxide (TiO2) powders through adding three different quantities (4.6, 9.2, and 13.8 ml) of silver nitrate (AgNO3) solution by mechanical ball milling process. X-Ray diffraction analysis suggested that Ag was loaded on the TiO2 powders in the form of silver oxide (AgO). SEM, particle size, and BET surface area analyses revealed that TiO2 particles agglomerated after ball milling, resulting in the decrease of specific sur...
Thermal imaging based on mechanical vibrations Yılmaz, Şener; Azgın, Kıvanç; Department of Mechanical Engineering (2022-8-19) The thesis proposes a digital, resonance readout method based on a lock-in based digital phase locked loop (DPLL) mechanism, which is designed, simulated, implemented and tested using a Xilinx made Field Programmable Gate Array (FPGA). Implementation is performed using a hardware descriptive language (VHDL) on low level. Certain digital signal processing algorithms such as lock-in detection, DPLL, DDS and CORDIC are implemented, simulated and tested. Moreover, the design is shown to be capable of resonating...
Effect of mechanical vibration on the microstructure and the mechanical properties of 7075 aluminum alloy produced by semi-solid melting method Poyraz, Cemre Metin; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2019) This study aims to understand the effect of the semi-solid melting process parameters such as casting temperature and vibration frequency on the mechanical, thermal and microstructural properties. For this purpose, rheocasting of 7075 aluminum alloy with and without B4C as 7075 matrix composite were carried out at various temperatures in between 620-635oC under different vibration frequencies in the range of 15-35 Hz. For this purpose, rheocasting experiments were carried out successfully Microstructure, th...
In vivo indenter experiments on soft biological tissues for identification of material models and corresponding parameters Petekkaya, Ali Tolga; Tönük, Ergin; Department of Mechanical Engineering (2008) Soft biological tissues, being live and due to their physiological structures, display considerably complex mechanical behaviors. For a better understanding and use in various applications, first study to be carried out is the tests made particularly as in vivo. An indenter test device developed for this purpose in the METU, Department of Mechanical Engineering, Biomechanics Laboratory is operational. In this study, in order to carry out precise and dependable tests, initially, various tests and improvement...
Modeling and experimental verification of dynamic characteristics antenna structure under mechanical shock using MDOF model Özçelik, Yunus Emre; Ciğeroğlu, Ender; Çalışkan, Mehmet; Department of Mechanical Engineering (2015) Antenna structures used in electronic warfare, radar, naval, satellite, spacecraft systems encounter mechanical shock from various sources such as near miss under water explosion, pyrotechnic and ballistic shocks. Since most antenna structures have larger dimension in longitudinal direction and experience high requency, high amplitude shock energy, geometric nonlinearity becomes crucial to predict dynamic behavior in real life. In this thesis, an antenna structure is modeled by Euler-Bernoulli beam theory i...

Citation Formats

M. Timuçin, A. Öztürk, J. Park, and G. Karakaş, “Mekanik bilyalı öğütmeyle yüksek etkinlikte fotokatalitik $TiO_2$ tozu ve nano boyutlu titanya sol üretimi,” 2012. Accessed: 00, 2020. [Online]. Available: https://app.trdizin.gov.tr/publication/project/detail/TVRJeU16UTA.