Characterization of cyclic crask growth behaviour of nickel base superalloys at elevated temperatures

Arslan, Gürsoy


Characterization of BPN Pyrotechnic Composition Containing Micro- and Nanometer-Sized Boron Particles
Koc, Suzan; Ulaş, Abdullah; Yilmaz, Nil Ezgi (Wiley, 2015-10-01)
The effect of micro- and nanometer-sized boron particles on boron-potassium nitrate (BPN) ignition composition was investigated in this paper. As a starting point, thermochemical calculations were made to determine the most promising ignition compositions. Both stoichiometric and fuel-rich formulations of BPN were produced to observe the performance variation due to boron content. Particle morphology of boron particles and the surface structure of the ignition compositions were investigated by SEM. The infl...
Characterization of non-Fickian moisture absorption in thermosetting polymers
Güloğlu, Görkem Eğemen; Altan, M. Cengiz (2015-05-22)
© 2015 AIP Publishing LLC.A recently developed moisture absorption model for thermosetting polymers that combines the non-Fickian, diffusion hindrance effects and three-dimensional anisotropy is introduced. The hindered diffusion model is shown to predict both short term Fickian and long term anomalous moisture absorption behavior often observed in thermosetting polymers and their composites. The salient characteristics of long term moisture uptake such as the equilibrium moisture content and the effect of ...
Characterization of adsorption-desorption properties of oxygen & water on mixed oxides
Ateş, Cihan; Üner, Deniz; Department of Chemical Engineering (2015)
The scope of this study includes the development of a methodology to determine a candidate material for two step thermochemical heat storage applications via fundamental principles of thermodynamics. The feasibility of utilizing stored thermochemical energy to produce CO from CO2 and H2 from H2O was demonstrated theoretically and experimentally. Metal oxide selection criteria were chosen as transport, kinetic and thermodynamic constraints. As a result Co3O4 was considered worthy of further investigation. Th...
Characterization of local flow behaviour in conical spouted beds
Yeniçeri, Ali; Külah, Görkem; Department of Chemical Engineering (2019)
Conical spouted beds are used in various physical and chemical applications such as drying, coating, and pyrolysis of waste plastic and biomass owing to their effective feature of gas-solid contact. To design and operate these units in high efficiency, a complete understanding of the phenomena and detailed investigation of local flow structure are of paramount importance. In this study, the effects of bed design parameters (unit size, conical angle, spouting gas-inlet diameter) and operational conditions (p...
Characterization of p-t-butylstyrene-dimethylsiloxane triblock copolymers in solution
Küçükyavuz, Savaş; Küçükyavuz, Zühal; Erdoǧan, Günseli (Elsevier BV, 1990-2)
Anionically synthesized poly(p-t-butylstyrene)-b-poly(dimethylsiloxane)-b-poly(p-t-butylstyrene) block copolymers containing about 28% by weight p-t-butylstyrene were characterized by using differential refractometry, light scattering and viscosity methods in a good solvent, benzene, and in a selective solvent, methyl ethyl ketone. The unperturbed chain dimensions were estimated. Results were discussed with regard to the conformation of block copolymers in solution.
Citation Formats
G. Arslan, “Characterization of cyclic crask growth behaviour of nickel base superalloys at elevated temperatures,” Middle East Technical University, 1993.