Materials Literature
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In this paper, a size-dependent microscale plate model is developed to describe the bending, buckling and free vibration behaviors of microplates made of functionally graded materials (FGMs). The size effects are captured based on the modified strain gradient theory (MSGT), and the formulation of the paper is on the b…
In the temperature-concentration phase diagram of most iron-based superconductors, antiferromagnetic order is gradually suppressed to zero at a critical point, and a dome of superconductivity forms around that point. The nature of the magnetic phase and its fluctuations is of fundamental importance for elucidating the…
On the use of surrogate models in the analytical decompositions of refractive index gradients obtained through quasiconformal transformation optics, Campbell, Sawyer D, Nagar, Jogender, Brocker, Donovan E, Werner, Douglas H
Abstract The oxidation of 10–10′ singly linked corrole dimers with DDQ at low concentration in CHCl 3 afforded meso–meso, β–β, β–β triply linked 2 H ‐corrole dimers (with two inner NH groups in each corrole unit), which exhibited characteristic 1 H NMR and absorption spectra attributable to their nonaromatic electroni…
IEEE Std. 516-2009 and IEC 61472-2013 present Minimum Approach Distance (MAD) requirements for tools to perform live maintenance safely, provided that the tool has no continuous film of moisture or measurable contamination present on its surface. However, four separate "clean" FRP hot-stick flashover incidents occurre…
The deformation of an elastic polyurethane rim is investigated experimentally. An empirical formula is derived for the dynamic-toughening coefficient of polyurethane, with allowance for the hardness and load rate.
The form factors for star-branched polymers with linear branches or with looping branches are calculated. The effect of chain swelling excluded volume is incorporated through an excluded volume parameter approach. The form factor for ring polymers is also included, since it is nicely derived as a special case. Further…
The possibility of prevulcanizing natural rubber latex via ultraviolet (UV) irradiation was investigated using 2-hydroxy-2-methyl-1-phenylpropanone as the photoinitiator and 1,9-bis(acryloyloxy)nonane as the coagent. Effects of the following process variables were assessed on the tensile strength and the cross-link de…
Theoretical analysis and experimental study were conducted to clear the partial discharge (PD) between moving charged metal particles and electrodes in insulation oil under flow state and AC condition. The rise time of the PD pulse current is tens of nanoseconds, which is not affected by velocity and voltage. The domi…
Quartz crystal microbalance with dissipation (QCM-D) and dual polarization interferometry (DPI) were used to investigate fibrinogen (Fib) adsorption behavior on different surfaces by changing the pH value. Moreover, integrin adhesion to the adsorbed Fibs was studied using DPI. Qualitative and quantitative studies of p…
This paper attempts to establish the grey correlation between the breakdown voltage of air gap and its energy storage status before discharge inception. A new method is presented for the breakdown voltage prediction of short air gaps. This method is based on an orthogonal design array and support vector machine (SVM).…
In recent years, polymer based composites have become more popular in many scientific researches as well as many commercial programs. Growing global, environmental and social concern, the high rate of depletion of petroleum resources and new environmental regulations has forced the search for new types of composites a…
BACKGROUND: Gadolinium-doped ceria is an attractive electrolyte material for potential application in solid oxide fuel cells (SOFCs) operating at intermediate temperatures typically with 10%-20% substitution of Ce+4 by Gd+3. In particular, 10% gadolinium-doped ceria seems to have the highest values of conductivities a…
Recent studies show that CF3I is possible to take the place of SF6used in gas insulated switchgear (GIS) as insulating gas. H2O is one of the key factors influencing the categories and quantities of decomposition products of SF6 in discharge. The process of decomposition of CF3I and the influence from H2O on the insul…
It is important to estimate the current magnitude and charge amount of a partial discharge (PD) in a gas‐insulated switchgear (GIS). In this study, electromagnetic fields generated by a PD in an 84 kV‐class three‐phase GIS for testing have been measured with a voltage probe installed on the outer surface of an insulat…
A new testing instrument was developed to measure the high-temperature constitutive relation and strength of materials under an oxidative environment up to 1800 °C. A high temperature electric resistance furnace was designed to provide a uniform temperature environment for the mechanical testing, and the temperature c…
Analytical expressions for densities of states of free graphene-like A N B 8–N compounds and flat and buckled epitaxial monolayers on a metallic substrate have been obtained by the tight-binding method using a low-energy approximation. Characteristic features of the densities of states as functions of the layer–substr…
A molecular theory of both elastic constants and the flexoelectric coefficients of bent-core nematic liquid crystals has been developed taking into account dipole-dipole interactions as well as polar interactions determined by the bent molecular shape. It has been shown that if polar interactions are neglected, the el…
Mechanical properties are substantiated, that are the most vulnerable to maintenance material deterioration of under prolonged operating time, accompanied by intense damage. The opposite behavior of relative elongation and contraction indicates the intensity of scattered damage of the operated metal. Reducing the perc…
Vps75 is a histone chaperone that has been historically characterized as homodimer by X-ray crystallography. In this study, we present a crystal structure containing two related tetrameric forms of Vps75 within the crystal lattice. We show Vps75 associates with histones in multiple oligomers. In the presence of equimo…