Materials Literature
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Recently, a support method termed ‘sacrificial support’ was proposed as a potential additional method to prevent rockburst damage, based on observations made after rockburst events in a mine. The philosophy behind a sacrificial support system is that: under dynamic loading conditions support, in the form of a liner, m…
RESUMO Vibrações transversais apresentam potencial para avaliação da madeira devido a alta precisão, baixo custo e rapidez, mas sua aplicação em madeira termorretificada ainda é pouco estudada. O objetivo deste trabalho foi avaliar as propriedades físicas e mecânicas de madeira termorretificada de Eucalyptus urophylla…
In this paper, silver-bearing antibacterial duplex stainless steels were prepared by adding Ag or Cu-Ag alloy particles. The microstructure, mechanical properties and fracture morphology were investigated in detail by OM, ESEM and tensile testing machine. Tensile tests indicate that the tensile fractures of Ag-bearing…
The finite element method is employed to simulate the microstructural evolution through grain coarsening within capillary liquid bridge. Liquid and solid phase domains will be represented with curved interfaces defined by the discrete set of points. Numerical method for simulation of grain coarsening will be based on…
The structural analysis methods are used to study the features of the local structure of nonstoichiometric strontium ferrites with a high concentration of oxygen vacancies depending on the degree of substitution by highly charged cations and external conditions. The ways of structure adaptation for the compositions wi…
The coke drum with a side channel at the beginning of cooling was simulated numerically using ANYSY, and the time history of the stress and strain fields were also acquired with indirect coupling method. The calculation results indicate that temperature stress and bending stress caused by the cold spots will cause bul…
Ultrafiltration (UF) processes are often used as pretreatment before more retentive/costly processes, such as nanofiltration and reverse osmosis. This study shows the results of low-biofouling nanocomposite membranes, loaded with casein-coated silver nanoparticles (casein-Ag-NPs). Membranes were cast and imbedded with…
In this paper, cushion process of the cylinder airbag in airdrop equipment landing system has been simulated. Based on the finite element theory, the finite element model of the airbag cushioning system is modeled by using the dynamic analysis software LS-DYNA in ANSYS, and the air bag cushion process is simulated by…
a,b a * ,a ( a 100871) ( b 610500) , DZP (5,5)(ORR) . , ORR O 2 OOH H 2 O 2 . , ORR . ORR O OH -4.33 eV -2.21 eV, (Pt)
In these experiments, we improve the quality of electrons injected along a shock-induced density downramp. We demonstrate that beam ellipticity and steering are influenced by the shock front tilt, and we present simple models to explain these effects. By adjusting the shock front angle, we minimize the beam’s off-axis…
The paper reports the effects of machining parameters on performance of biodegradable magnesium calcium alloy implant in terms of surface roughness, microstructure, microhardness, chip morphology and degradation rate in face milling using CVD diamond like carbon coated carbide inserts. The result shows that the corros…
Tris(3-bromo-acetylacetonato) chromium(III) as an inert and very stable complex with a good leaving group was synthesized using as-prepared Cr(acetylacetonate)3. Highly ordered nanoporous silica (LUS-1), with some great features, was functionalized with 3-aminopropyltriethoxysilane. Then the as-prepared product was mo…
Asian Journal of Chemistry, a Multidisciplinary Chemistry Journal is an Peer Reviewed International Journal and publishes from India. The journal has been established since January 1989 on a firm foundation of International Quality Research. This Journal encompasses all branches of chemistry and its sub – disciplines…
Fibre orientation is a major factor influencing composite performance; research, largely on synthetic fibre composites, supports that the best mechanical performances are achieved in composites when fibres are aligned in the loading direction. Generally, with short natural plant fibre (SNPF) composites, randomly orien…
The oxide dispersion strengthening stainless steel of Fe-11.5wt%Cr and Fe-11.5wt%Cr-1%ZrO 2 alloy by mechanical alloying method were synthesized by planetary ball milling. The methods employed for study were designing of Fe-11.5wt%Cr and Fe-11.5wt%Cr-1%ZrO 2 proportion of composition alloy which is plotted to Schaffle…
The cold gas dynamic spray was used to prepare the Al 2 O 3 -Cu alloys coating on Al, Cu and steel substrate in this study with the mixture of pure Al 2 O 3 powder and pure copper powder. The influence rule of coating performance for different ratios was analyzed. The results showed that at a relatively high substrate…
In the treatment of abdominal organs using high intensity focused ultrasound (HIFU), the patient’s ribs are in the pathway of the HIFU beams which could result in acoustic distortion, occasional skin burns and insufficient energy delivered to the target organs. To provide full characterization of HIFU field with the i…
TiB2 based self-lubricating ceramic composites with the addition of different content of h-BN were prepared by hot pressing technique and their mechanical properties were tested. Friction and wear experiments are conducted on a MMW – 1A configuration control universal friction and wear testing machine. Friction and we…
This paper introduces a high intensity focused ultrasound system for ablation using switch-mode power amplifiers with harmonic cancellation technique eliminating the 3rdharmonic and all even harmonics. The efficiency of the amplifier is optimized by choosing different parameters of the harmonic cancellation technique.…
This paper describes the methodology adopted to perform a CFD analysis with the aim to study thermal striping in T-junctions with liquid sodium; in particular, a portion of the Phenix reactor's secondary circuit has been taken into account, by implementing a detailed 3D model of both fluid and solid domain; RANS and L…