Materials Literature
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During stress wave propagation through a composite material, the wave velocities through the fibre and matrix are different because of the differences in the respective moduli and densities. The stresses and strains generated in the constituent material are accordingly related to the wave velocities. In a typical spli…
The radical formed by muonium addition to diketene has been studied by transverse field muon spin rotation (TF-µSR) and muon avoided level-crossing resonance (µALCR). The TF-µSR spectrum shows that muonium adds to only one site in diketene, and it is clear from the µALCR spectrum that the radical product contains two…
Analyses are made on the characteristics of cooling and undercooled solidification of multi-stage atomized aluminum droplets. Models are established for Newtonian cooling, highly undercooled heterogeneous nucleation and steady-state continuous growth. They are used for numerical simulation of the thermal history of th…
A novel ZnO (zinc oxide)–PANI (polyaniline) composite film on PATP (ρ-aminothiophenol)/Au was prepared by electrochemical-assembly (ECA) and sol–gel technique, and this composite film shows excellent luminescent performance and high photoelectrochemical conversion efficiency, which can be industrially used for lumines…
A non-destructive system using a Hall effect I.C. sensor has been used to measure the distribution of the vertical component of stray magnetic field on the opposite surfaces of a magnetised specimen of high permeability, grain-oriented electrical steel. An optical microscope was used to establish positions of grain bo…
Radyasyon bir kaynaktan elektroman yetik dalgalar veya parçacıklar şeklinde salınan bir enerjidir. Lazer, güneş, radar sistemi, tele vizyon vericileri, x-ışmı makineleri ve radyo aktif kaynaklar gibi birçok radyasyon kaynağı bulunmaktadır. Genellikle insan yararına kul lanılan yapay radyasyon kaynaklarından ve doğ…
The purpose of the present paper consists in finding a more efficient and less expensive decontamination method for surfaces contaminated with Tritium-labelled compounds, being able to provide information for nuclear field specialists. This paper studies the polymeric hydrogel DeconGel, presenting the methods and faci…
An air jet loom equipped with a profile reed and sub-nozzles is able to weave wider fabrics at higher speed than other types. A study on the characteristics of air flow and behavior of the weft yarn in the weft passage area of the profile reed during inserting the weft yarn is very important. The velocity distribution…
Aimed at the measuring means and methods of mechanical parameters, such as stress, fatigue life, and hardness of ferromagnetic materials, this paper applies one of the properties of ferromagnetic materials, that is, magnetic Barkhausen noise effect, and adopts magneto -elasticity noise theory in the research into the…
Surface treatment of nanoscale titania is one of the key steps in commercial production of titania and it can be decided directly the application fields of titania powder.Coating a film of organic or inorganic compound on its surface to avoid the aggregation of the particles is adopted frequently.Principles of surface…
Experimental research on leakage rate of silastic O-ring at simulative space environment is conducted to investigate the effect of compression ratio, temperature, load decay of O-ring and radialization of atomic oxygen on the leakage rate of O- ring. The results show that the leakage rate of O-ring decreases with the…
Single crystals of CaFeO3 have been synthesized at high pressure of 4.5 GPa with a mixture of KClO4, NaCI and CaCl2 as flux and oxidizing agent. The temperature dependence of the resistivity showed a metal-insurating transition at 295 K, corresponding to the charege disproprotionation. A screw-spin type antiferromagne…
A sewing machine consists of four basic mechanisms: a take-up mechanism, a needle-motion mechanism, a material-feeding mechanism, and a bobbin. Its proper operation requires a delicate balance of these mechanisms. This paper introduces a computer-simulation model that represents these mechanisms and uses the model to…
The films colored by a three-step electrolytic coloring method were examined with respect to influence of ultraviolet irradiation using transmission electron microscopy (TEM) and color difference measurement, and the results were compared with those of films colored by a two-step electrolytic coloring method. The thre…
Sol-gel deposited lead zirconate titanate piezoelectric thin films were reactive ion etched in SF6 plasmas. Etch rates increased approximately linearly with cathode power, reaching 65 nm/min at 300 W, Etch rate was independent of SF6 flow rate but increased as pressure was reduced, indicating an etch process that is d…
Partial discharge (PD) is an important cause of insulation degradation in transformers and electrical machines. This paper introduces a kind of fractal image compression (FIC) method used in PD pattern recognition. With classification to domain blocks and quadtree partition to image, the method can compress PD gray in…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. Capone, D. Feinberg, M. Grilli; Crucial role of Jahn–Teller distortions in LaMnO3. AIP Conf. P…
The mechanical properties and deformation behavior of Ti-5Al-2.5ZrELI alloy compared with Ti-5Al-2.5SnELI at 4.2 K, 20 K and 293 K were investigated. The results show that the new titanium alloy Ti-5Al-2.5ZrELI has more consistent properties because of its uniform microstructure and less segregation. It has good elo…
The water-soluble poly(aminoaryloxy-methylamino phosphazene) has been synthesized and investigated as a polymeric carrier species for the covalent attachment of biologically active agents. The cyclic trimeric model systems were utilized for the synthesis of polymeric analogues containing bioactive side groups. The sod…
To date, a fundamental knowledge of flow and compaction mechanisms has been gained by the study of laminates with simple geometries. Since most of the applications of composites involve complex shapes, it is necessary to study their compaction behaviour to develop more accurate theories. In this paper, the flow and co…