Materials Literature
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This article describes laboratory research done on strength evaluations for stabilized samples made of tropical fibrous peat. The stabilizing agents used were ordinary Portland cement (OPC) as binding agent and flay ash as additive. Stabilized samples were tested for their strength through unconfined compressive stren…
Structure and Properties of sericinjam sericin extracted was investigated using SDS-PAGE electrophoresis, UV, CD, and DSC. The molecular weight and its distribution of sericinjam sericin showed broad tailing pattern. Circular dichlroism spectra showed that the structure of sericinjam sericin in solution was different…
In this article assumptions for the physical and mathematical general model of the knitting process, referring to both isoand anisostructural warp-knitted fabrics, have been defined. In the course of the simulation and experimental research, the changability tendencies as well as the optimum construction parameters of…
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In order to investigate the mechanism for the intergranular fatigue crack propagation of a low carbon steel in a low pressure hydrogen gas environment, two kinds of examinations were carried out. One was the examination on the effect of cyclic prestrain on the crack growth behavior. The other was the in-situ observati…
The observed loss of shear strength of boron carbide near 22 GPa has been attributed to presence of amorphous material in the shock recovered, and statically/dynamically indented B4C. This work shows presence of amorphization in boron carbide under triaxial stress compression. This evidence is obtained from in‐situ me…
The acidic newsprint paper was covered by chitosan dissolved in water in accordance with nitrogen plasma treatment at atmospheric pressure. Plasma was applied before or after chitosan application. Aging stability of the modified paper was tested by artificial accelerated thermal aging. The mechanical, chemical and str…
Serial impact test datas were fitted with Boltzmann function and hyperbolic tangent function mathematical model separately and the ductile-brittle transition temperature curve were gained.Quality and applicability of these two models were compared and parameters selection of these two models were discussed.The results…
The herein contribution concerns on theoretical and experimental approaches of the effective elastic moduli of multi-phase, fibre and particles, polymeric composites materials from micromechanics theoretical point of view vs. experimental retrieved values. A homogenization concept will be presented in order to predict…
Based on thermodynamic analysis,the Gibbs free energy and critical temperature of the MgO deoxidized reaction by CaC2 has been calculated in this paper.And some experiments for Mg reduction from calcined dolomites by calcium carbide have been done.It is shown that under same condition of temperature and vacuum press t…
The dynamical shear deformation induced hexagonal close-packed （HCP）face-centred cubic （FCC） processes in TiAl/Ti3Al system are investigated by the molecular dynamics method. The details of the dislocation initiation， the microstructure evolution and the force field effect are presented and discussed. The analyses of…
Many eukaryotic signaling proteins are modified by the covalent attachment of long-chain lipids. These highly hydrophobic molecules bind target proteins and facilitate interaction with cellular membranes, lipid molecules and other proteins. Generally, there are three classes of lipids that modify target proteins: myri…
Using AUTODYN-3D [1] Code and Stochastic model to simulate natural fragmentation of PELE impact aluminum target based on Mott distribution.Numerical simulation result of PELE penetration with rotation and impact angle are analyzed,then statistics of fragments number-quality distribution,gauge the azimuth angle and ran…
In order to obtain micro-structured surfaces with nano-surface finish,a three-dimensional diamond fly-cutting system was established based on a 'Nanosys-300' ultra-precision machining system.The effects of the spindle speed,feed rate,as well as the cut depth on the roughness were investigated,respectively.The analytic…
Effect of austenitizing temperature on hydrogen embrittlement sensibility of 25CrNi2MoVNb steel was investigated by means of slow strain rate test on notch tensile specimens.With the increase of austenitizing temperature from 880 to 1200 ℃,the prior austenite grain size of the 25CrNi2MoVNb steel was increased from 6 t…
New medical Mg-Ca alloys were prepared with a view of comprehensive consideration of biology and metallurgy.The mechanical properties of the alloys could meet the requirement of hard tissue implantation to the materials.The surface modification through Zn ion implantation was carried out.The corrosion resistance of th…
It is of scientific and practical importance,to do experimental research on the process of premixed gas explosion in linked vessels.In this paper,different firing positions,initial pressures and initial densities were investigated to obtain their impacts on gas explosion pressure in linked vessels.The results showed t…
Corona determines the electromagnetic environment characteristics of transmission line. In this paper the corona losses calculation method of AC transmission lines based on charge simulation method is improved. The AC conductors are represented by discrete infinite line charges When the value of conductor surface elec…
The 6.35-mm-diameter aluminum spheres were driven by a two-stage light-gas gun to normally penetrate aluminum sheets at the impact velocities of 2.23~5.26 km/s.The flash radiographs of the impact-induced debris clouds were presented and analyzed to describe the features of deformation and fragmentation of the aluminum…
The micromixing characteristics of an opposed-jet reactor have been studied by using the parallel competing iodide-iodate reaction system.The effects of varying the feeding flow rate,concentration of sulfuric acid and impinging angles on the segregation index were investigated and the micromixing time was estimated.Th…