Materials Literature
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This paper offers a study of oxygen dissolution into a solid, and its consequences on the mechanical behaviour of the material. In fact, mechanical strains strongly influence the oxidation processes and may be, in some materials, responsible for cracking. To realize this study, mechanical considerations are introduced…
In industrial applications, different rubber types are often blended to fine-tune or optimize the property portfolio required for successful performance of articles. Considering the complexity of a rubber blend compound, wherein numerous additives are involved, vulcanization or cure mismatch often occurs as an outcome…
We use the finite-element method for simulating light transmission through a 2D-periodic array of rectangular apertures in a film of highly conductive material. We report results with a relative error of the transmissivity lower than 0.01%. This is an improvement of about one order of magnitude compared to previously…
Electron pairing is central to modern concepts of superconductivity, and provides a basis for the ubiquitous presence of h/2e in the theory and phenomenology. However, the lack of a consistent real-space picture of phonon-mediated pairing suggests that the pairing interpretation may be incomplete or even misleading. A…
Cette thèse a permis de développer un modèle analytique pour la prédiction de la température critique de poutrelle cellulaire fabriquée à base de profilés laminés en situation d'incendie. Ces résultats seront basés sur la mise au point d'un nouveau modèle analytique de poutrelle cellulaire isostatique soumise au feu.…
Capillary Absorption of Metal Nanodroplets by Single-Wall Carbon
Monodisperse FePt nanoparticles with controlled size and geometry have drawn great attention in the last decade for fundamental scientific studies and for their potential applications in advanced materials and devices such as ultra-high-density magnetic recording media, exchange-coupled nanocomposite magnets, biomedic…
Within the Generation IV International Forum (GIF), considerable efforts are devoted in Europe to research and development of the (Very) High Temperature Reactor system. This is one of the six reactor systems which GIF had selected and recommended for further development, in particular for industrial process heat appl…
The solubilities of 1,1′-(propane-1,3-diyl)-bis(3-methyl-1 H -imidazolium-1-yl) dihexafluorophosphate in acetone, 2-butanone, acetophenone, cyclohexanone, acetylacetone, and water were measured at temperatures from (288.55 to 335.25) K by a laser monitoring observation technique at atmospheric pressure. The experiment…
OPC (Optical Proximity Correction) technique is inevitable and getting more complex to resolve finer features on wafer with existing optical lithography technology. Some SRAFs generated with special model-based OPC engines are so sophisticated that we can hardly imagine final patterns on wafer simply by seeing pattern…
We present a quantum-electrodynamical formalism to study the spontaneous emission from dipoles embedded in a non-absorbing and lossless multilayer dielectric structure. In this model the electromagnetic field is quantized by a proper choice of a complete and orthonormal set of classical modes and the analytical expres…
We have grown calcium and oxygen co-doped Y1-xCaxBa2Cu3O7-{\delta} single crystals using self-flux method. A method of fine tuning oxygen content to reach the equilibrium state through in situ monitoring of the conductivity change is established. Structural, compositional and electronic property characterizations of o…
The Kansas Perpetual Pavement experiment includes the construction of four pavement sections on the US-75 highway designed according to the perpetual pavement concept. The sections were instrumented with strain gauges and pressures cells to measure strains and stress at the bottom of the base layer and at the top of t…
North Carolina State University Theses Mechanical and Aerospace Engineering.;North Carolina State University Theses Mechanical and Aerospace Engineering.
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCarbon Nanofibers Synthesized by Catalytic Decomposition of Methane and Their Electrochemical Performance in a Direct Carbon Fuel CellXiang Li, Jiuling Chen, Zhonghua Zhu, Roland De Marco, John Bradley, and Andrew DicksC…
This study examines the effects of cyclic temperature changes on the stress-induced bending of a surface micromachined gold-coated curved diffraction grating. The out-of-plane deformation of the grating is analyzed under different temperature conditions using a finite element model. A numerical and experimental invest…
Using differential scanning calorimetry, the transition enthalpies and temperatures for the bulk smectic-isotropic phase transition have been measured for a series of liquid-crystal compounds. For five compounds, those values were used as parameters in a microscopic mean-field model to predict the temperature dependen…
In this paper, a thermal dynamic numerical method was carried out to model the austenite static recrystallisation behaviour of steel 33Mn2V used in new non-quenched/tempered oil well tubes at different deformation temperatures, strain rates, deformation amounts and initial microstructures. Based on the MARC/AutoForge…
The objective of this work was to enable the safe design of hydrogen pressure vessels by measuring the fatigue crack growth rates of ASME code-qualified steels in high-pressure hydrogen gas. While a design framework has recently been established for high-pressure hydrogen vessels, a material property database does not…
In this article of principle construction of water wells and their regeneration methods are discussed. Commonly occurring reasons of water well obstruction are described and presented. The regeneration process of water wells using ultrasound is examined in detail along with the benefits of using this method. The regen…