Materials Literature
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The current computer simulation based study aims to elucidate the complex role that the state of aggregation and morphology of the food materials plays in determining their transport behaviour. Using Brownian dynamic simulations, applied to colloidal systems, we simulate the compression of two different dense layers o…
We provide an overview of transient extensional rheometry techniques for wheat flour doughs in which the deformation and material response is well defined. The behavior of a range of model doughs was explored with a Filament Stretching Extensional Rheometer (FISER). The measurements were also compared to data obtained…
We studied crystallization process of isotactic polypropylene (iPP) under shear flow as a function of shear rate using time-resolved wide-angle X-ray scattering (WAXS), small-angle X-ray scattering (SAXS), depolarized light scattering (DPLS), and polarized optical microscopy (POM) to elucidate the formation mechanism…
A facile means for obtaining submicrometer carbon fibers with a nanoporous structure is presented. A mixture of polyacrylonitrile (PAN) and a copolymer of acrylonitrile and methyl methacrylate (poly(AN-co-MMA)) in dimethylformamide was electrospun into submicrometer fibers with a microphase-separated structure. During…
Following the development of the glassy chalcogenide field, new optoelectronic materials based on these materials have been discovered. Several non-oxide glasses have been prepared and investigated in the last several decades, thus widening the groups of chalcogen materials used in various optical electronic and optoe…
This paper presents performance of supercapacitor built from different carbon materials. The general principle of supercapacitor and formula connected with its operation are also described. The role of carbon nanotexture has been underlined selecting carbons prepared by template techniques. It has been demonstrated th…
We investigate geometrically exact generalized continua of micromorphic type in the sense of Eringen. The two-field problem for the macrodeformation φ and the affine microdeformation P ̄ ∈ GL + (3, R) in the quasistatic, conservative load case is investigated in a variational form. Depending on material constants, two…
The designed elaboration of alumina sub-micrometric spherical powder that combines 3D ordered mesoporosity of high accessibility, nanocrystalline structure, and thermal stability up to 900 °C is reported. The strategy used to elaborate such new materials labeled “UPMC1” involves specific block-copolymer templating, al…
The 3-omega method is widely used to measure thermal properties of thin films and interfaces. Generally, one-dimensional heat conduction across the film is assumed and the film capacitance is neglected. The change in the in-phase (real part) temperature response for the film-on-substrate case relative to the substrate…
The distribution of size and frequency of inclusion in samples of surface layer of IF steel 1150 mm× 230 mm casting slab with unsteady casting speed(1.4 m/min to 0.6 m/min and 0.6 m/min to1.4 m/min)has been studied by Original Position Analysis System(OPA- 100). The results show that the distribution rule of size and…
The behavior of liquid level and flowage in 220 mm x 1 300 mm slab mold with casting speed 1. 4 ~2. 4 m/min during submerged nozzle clogging and argon blowing has been studied by water model. The results showed that during nozzle clogging course the streams at both side of nozzle were asymmetric, the size of bubble de…
The flow and solidification status of molten steel with coupling flow field and temperature field in inner- outer couple cooling mold has been simulated by using CFD commercial code Flow-3 d software to get distributing diagrams of flow field and temperature, and free-surface level and shape diagram. The influence of…
The mathematical modeling of finished Φ12. 5 mm rod temperature at water cooling zone and blast cooling zone of 62.7 m controlled cooling line for rod 82B (0. 80 -0. 82C, 0. 6 -0. 9Mn, 0. 016V) has been studied by using commercial FEM software Marc. The comparison between model calculated results and measured results…
The single pass reduction deformation experiments of a Ti-IF steel (0. 009C, 0. 047Ti) at 750 ~ 850 °C with strain rate of deformation 1 -70 s-1have been carried out by THERMECMASTOR-Z thermal simulation machine. Based on obtained stress - strain curves with different temperature and strain rate of deformation, it sho…
The effect of C content(8.39%~14.20%)and TiO₂(0.35%) on fluidity of mold flux-21.98~ 27.93 CaO,32.03～43.20 SiO₂,4.58~5.83 Al₂O₃ at 1120～1200℃has been studied.The results showed that residual carbon in flux and TiO₂ in flux which was produced by Ti oxidation in Ti bearing steel led to worse fluidity of mold flux
The characteristics of 9 kinds of flat air-water nozzles for 4 strand 360 mm×450 mm billet concaster at Panzhihua Steel have been tested by using test device for measuring cold perormance of nozzles for secondary cooling. The test results showed that with nozzles level h was 115 mm and 140 mm and with jetting angle 11…
The 8- stand floating mandrel continuous rolling process of Φ169 mm x6 mm T91 steel seamless tube has been simulated and analyzed by 3- dimensional thermo-mechanical coupled FEM to get distribution of equivalent stress of across section at exit of each pass, as well as change characteristics of rolling force, mandrel…
According to 1:2 ratio,the flow rate in 640 mm×90 mm water model mold with nozzle submerged depth 130~170 mm and outflow inclination of nozzle -30°~10°was tested by Laser Doppler Velocimetry(LDV), and its numerical simulation was carried out by FLUENT software. The results showed that increasing nozzle sub- merged dep…
The behaviour of the anisotropic electrical conductivity of liquid crystal–gold nanoparticle (LC‐GNP) composites consisting of a commercially available room temperature nematic compound doped with alkylthiol‐capped GNPs has been investigated. The nematic–isotropic transition of the composite decreases nearly linearly…
Abstract In the present research, we report for the first time the X‐ray fiber pattern and polarized IR/Raman spectra taken for the uniaxially oriented disorder α form of PLLA, which can confirm the existence of the disorder PLLA α form (α′‐form) and provide some new insight on the structural difference between the or…