Spark plasma sintering (SPS) is a highly efficient method for the preparation of α/β-SiAlON ceramics. However, rapid large-scale ceramic components with reliable mechanical properties difficult via SPS due to their near-insulating properties. In this study, high-performance end mill rods large aspect ratios were successfully prepared SPS. Two different types processes (namely vertical-round-rod...

The main purpose of this study is to perform numerical simulation of nanofluids as the coolant in VVER-440 fuel rod bundle. The fuel rod bundle contains 60 fuel rods with length of 960 mm and 4 spacer grids. In VVER-440 fuel rod bundle the coolant fluid (water) is in high pressure and temperature condition. In the present Thermo-hydraulic simulation, water-AL2O3 nanofluids containing various vo...

In this paper, the finite volume method is developed to analyze coupled dynamic problems of nonlinear thermoelasticity. The major focus is given to the description of martensitic phase transformations essential in the modelling of shape memory alloys. Computational experiments are carried out to study the thermo-mechanical wave interactions in a shape memory alloy rod, and a patch. Both mechani...

The fracture modes of hydroxyapatite (HA) scaffolds fabricated by direct-write assembly (robocasting) are analyzed in this work. Concentrated HA inks with suitable viscoelastic properties were developed to enable the fabrication of prototype structures consisting of a 3-D square mesh of interpenetrating rods. The fracture behavior of these model scaffolds under compressive stresses is determine...

A two-dimensional vesicle of hard rods subject to a shadowing interaction is analy2ed by Monte Carlo simulations. From the mode analysis of the shape fluctuation of the vesicle, the bending rigidity is estimated microscopically and the relation between the rod length and the bending rigidity is studied. A scaling relation of a mean square radius of gyration is investigated and compared with tha...

In an attempt to determine whether the relative contributions of magno-mediated and parvo-mediated inputs to the cortex are significantly altered in the transition from cone to rod vision, VEPs were recorded at different luminance levels (photopic to scotopic) for 2Hz square-wave, isochromatic flicker. The VEP mass response appears capable of reflecting major parvo-mediated contributions even a...

We present a self-consistent technique for the asymptotic analysis of dispersion curves in two-dimensional (2D) metallic photonic band gap (PBG) structures representing square and triangular arrays of metal rods. The technique is applicable for the structures with rod radii (a), which are small compared to the distance between the rods (b) and to the wavelength (λ). The induced current and char...

A variety of papers have studied color at low-light levels in different illuminants. This paper reviews these results and adds new experiments using long-wave-rich illumination, appropriate for rod and long-wave cone interactions. The experimental results agree with and extend previous results. Since these experiments use illuminates more appropriate for rod-cone interactions they measure a muc...

We report an experimental and theoretical study to optimize the geometry of far-IR photoconductive detectors with diffraction-limited throughput. Factors considered in this optimization include internal optical path relative to measured absorption length, photoconductive gain, uniformity of illumination, cosmic ray cross section, and compatibility of the design with the requirements of 1and 2-D...