Güncel Gönderiler: Mühendislik Fakültesi
Toplam kayıt 568, listelenen: 401-420
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Broadband LWIR and MWIR metamaterial absorbers with a simple design topology: Almost perfect absorption and super-octave band operation in MWIR band
(OSA - The Optical Society, 2017)Infrared absorbers are essential structures in the design of thermal emitters and thermal infrared imagers. In this study, we propose simple topologies of wideband metamaterial absorbers operating in the long-wave infrared ... -
Efficient and broadband guided wave one-way mode-order conversion with theoretical and numerical analysis
(Optical Society of American (OSA), 2013)In this article, an efficient method of asymmetric conversion of guided modes is investigated. From a basic excitation consisting of (mainly) the lowest-order mode of the input multimode strip waveguide, we achieve a ... -
Ultra-broadband long-wavelength infrared metamaterial absorber based on a double-layer metasurface structure
(OSA - The Optical Society, 2017)In this paper, we report a metamaterial absorber design that achieves a broad absorption band encompassing the whole long-wavelength infrared (LWIR) region. The structure consists of two parallel metasurfaces buried in an ... -
Heat transfer augmentation by swirl generators inserted into a tube with constant heat flux
(2009)A novel conical injector type swirl generator (CITSG) is devised in this study. Performances of heat transfer and pressure drop in a pipe with the CITSG are experimentally examined for the CITSGs' angle (α) of 30°, 45° and ... -
Extraction of soluble β-glucan from oat and barley fractions: Process efficiency and dispersion stability
(Academic Press, 2018)This study comprises laboratory-scale extraction of soluble ?-glucan (BG) from oat (16 and 32% BG) and barley (12 and 32% BG) fractions, investigation of chemical composition and stability of dispersions prepared from water ... -
Effect of steam explosion on enzymatic hydrolysis and baking quality of wheat bran
(Academic Press, 2017)In this study, the effect of steam explosion (SE) treatment on microstructure, enzymatic hydrolysis and baking quality of wheat bran was investigated. Coarse and fine bran were treated at different steam temperatures ... -
First report: Exposure estimates to ochratoxin a through wheat bread and rice intake in Turkey
(Academic Press, 2016)A total of 160 samples of fresh wheat bread and rice from Turkey were analysed for the presence of ochratoxin A (OTA). The samples were analysed using a high performance liquid chromatography coupled with fluorescence ... -
Production of metal matrix composites by the vortex method and investigation of the effect of changing casting temperature on particles ratio of product-composite
(Blackwell Publishing Inc., 2014)In this study, Al-2011 alloyed and Al2O3 particle-reinforced metal matrix composite (MMCs) were produced by using the Vortex method. Immediately after pouring composite to the mold and before full solidification, the ... -
Residual stress analysis snd expansion of plastic zone in simple supported and clamped supported woven Ni-Cr reinforced thermoplastic matrix composite laminated plates
(2007)In this study, a residual stress analysis is carried out on symmetric cross-ply and angle-ply thermoplastic simple supported and clamped supported laminated plates for transverse loading. Low density polyethylene thermoplastic ... -
An elastic-plastic stress analysis of woven Ni-Cr reinforced thermoplastic composite cantilever beam
(2007)In the present study an analytical elastic-plastic stress analysis is carried out for a low-density homogeneous polyethylene thermoplastic cantilever beam reinforced by Ni-Cr steel fibers. The beam is loaded by a constant ... -
Residual stress analysis of aluminum metal matrix composite laminated plates with a square hole
(2009)Metal matrix composites provide new materials with superior properties. They give high strength and stiffness. In this study, a stainless steel reinforced aluminum metal matrix laminated simple supported plate with a square ... -
The inhibition of steel corrosion in acidic solutions by a new Schiff base
(Sociedad Chilena de Quimica, 2016)The inhibition effect of 2,2?- (((thiobis (4,1 phenylene)) bis(azanylylidene)) bis(methanylyidene)) bis(4-methoxyphenol) (BIS-IMIN) on the corrosion behavior of 304-stainless steel (SS) in 0.5 M HCl solution was studied ... -
Preparation and swelling properties of zeolite-poly(2-hydroxyethyl methacrylate-co-acrylic acid) hydrogel composites
(Polish Academy of Sciences, 2016)Zeolite-Poly(2-hydroxyethyl methacrylate (HEMA)-co-acrylic acid (AA)) hydrogel composite materials were synthesized by in situ free radical addition polymerization technique. The swelling values obtained highly for the ... -
Electrical conductivity and corrosion performances of in situ and ex situ AA7075 aluminum composites
(Polish Academy of Sciences, 2017)The present study investigates corrosion behaviors and electric conductivity of AA7075 in situ (TiAl3) and ex situ (B4C) composites produced by powder metallurgy method. In production of in situ composites, various amounts ... -
Corrosion behaviour and electrical conductivity of reinforced TiAl3 and B4C hybrid aluminium composites
(Polish Academy of Sciences, 2017)In this study, corrosion and electric conductivity of aluminum hybrid composites (in situ TiAl3 and ex situ B4C) produced by powder metallurgy are investigated. Hybrid (in situ and ex situ) aluminum composite powders are ... -
Effect of surfactant types on the size of tin oxide nanoparticles
(Polish Academy of Sciences, 2017)In this study, tin oxide (SnO2) nanoparticles were synthesized by hydrothermal method in the presence of hydrazine and ammonia by adding surfactant for 12 h in a Teflon autoclave at 100°C reaction temperature. Tin(II) ... -
Synthesis, characterization and sensing behavior of WO3 nanocrystalline powder for toluene vapor
(Polish Academy of Sciences, 2017)Tungsten oxide (WO3) nanocrystalline powder was successfully synthesized by direct precipitation technique starting from sodium tungstate dehydrate (Na2WO4•2H2O) as precursor at 80°C for 48 h. The morphological characteristics, ... -
The effect of aluminum and ammonium perchlorate content on temperature sensitivity, mechanical properties and performance of HTPB propellants
(The Japan Society for Aeronautical and Space Sciences, 2007)This paper describes the effect of aluminum content variation of HTPB (hydroxyl terminated polybutadiene) propellants on temperature sensitivity, mechanical properties and performance values. Aluminum (Al) content was ... -
An experimental study on combustion, engine performance and exhaust emissions in a HCCI engine fuelled with diethyl ether-ethanol fuel blends
(Elsevier, 2016)In this study, the effects of diethyl ether–ethanol fuel blends on HCCI combustion, engine performance and exhaust emissions were investigated experimentally in a single cylinder, port injection HCCI engine. In the ... -
The use of factorial design for modeling membrane distillation
(2010)A two-level factorial experimental design was used to investigate the influence of the main operating parameters on evaporation flux and soluble solid content of apple juice during concentration through osmotic distillation ...
