Materials Literature
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Partial discharge (PD) measurement is an established condition monitoring technique used to assess the deterioration of high voltage insulation systems such as power transformers and gas-insulated switchgear. Two popular monitoring techniques employ radiated RF measurements and conventional apparent charge measurement…
In order to design an efficient air-conditioning system, the specifics of the transient thermal and physiological responses of a human body to the hygrothermal environment should be taken into account. This response will strongly depend on the behavior of heat and moisture transport, and moisture accumulation in the c…
Variable Frequency Microwave (VFM) technology has reduced the full cure temperatures of 350degC for PI films to as low as 175degC with only one hour cycle times. PBO films, with standard cure temperatures of 350-380degC, can be fully cured at 185-200degC in one hour with VFM. The resulting VFM cured film properties ar…
Abstract It is known that for painted metals the presence of hydrosoluble species within the layer of atmospheric corrosion products, mainly chlorides and sulphates, beneath the coating promotes osmotic blistering and underfilm metallic corrosion when the concentration of the soluble salts exceeds a critical level. Ho…
Miessiite, a new mineral species of ideal composition Pd11Te2Se2, is cubic, space group Fd 3 m (#227), a 12.448(2) A, V 1929.0 (4) A3, Z = 8. The strongest six lines of the X-ray powder-diffraction pattern [ d in A(I)( hkl )] are: 2.395(80)(511,333), 2.197(100)(440), 1.875(25)(622), 1.555(25)(800), 1.305(25)(931) and…
Abstract Two sets of water‐soluble poly(phenylene vinylene)s were synthesized and their optical properties were studied. The aqueous solubility of all these polymers is rendered by pendant sulfonate groups. One set of polymers (polymer I series) contains, in addition to the sulfonate pendants, dimethoxy substituents,…
Abstract In this study, the Taguchi method, a powerful tool to design optimization for quality, is used to find the optimal process parameters of pulse cathodic protection system for the calcareous deposits' formation. An orthogonal array, main effect and the signal‐to‐noise (S/N) ratio are employed to investigate the…
Optimization of Crystallization Characteristics for Phase-Change Optical Disk with Ag–Ge–Sb–Te Recording Film, Hirotsune, Akemi, Terao, Motoyasu, Miyauchi, Yasushi, Miyamoto, Makoto, Tokushuku, Nobuhiro, Tamura, Reiji
In this paper, a detailed analysis of the dispersion characteristics of metamaterial transmission lines, based on the lumped element T-circuit model is carried out. One of the main relevant characteristics of these artificial lines is the possibility to tailor the phase response. This leads to unique properties which…
Polymer stabilization (PS), in which mesogenic monomers doped in a liquid crystal (LC) medium are photocured by UV light, is an attractive technique because the physical property of LCs can be improved and furthermore new characteristics may arise. In this study, we have investigated the effects of polymer doping on t…
Abstract Charged nano‐colloidal particles self‐assemble and display ordered arrays or other structures at liquid interfaces. We used Monte Carlo (MC) simulations to examine the effect of long‐range repulsive collective inter‐particle interactions on structural—transitions from liquid‐like to crystal‐like. We used the…
This article is part of an extended study concerning the reactivity of acetylenic systems at high pressure and aims to the investigation of the high pressure synthesis and stabilization of polyacetylenic chains. The data for diphenylacetylene (DPA) are interpreted by establishing a comparison with the results obtained…
In this study, a series of plain knitted fabrics are produced on a flat knitting machine with glass fiber yarns for composite reinforcement. Their geometrical and dimensional properties are experimentally investigated. The influences of the loop length, fabric tightness factor, and yarn linear density on the number of…
Ferroelectric Bi3.25La0.75Ti3O12 (BLT) thin films were deposited on SrRuO3 (SRO) and Pt electrodes by pulsed laser deposition. The data retention characteristics of the BLT films on different electrode materials were characterized. The experimental results are well fitted by a stretched exponential decay model, indica…
The dielectric ceramics of BaTi1−3xCuxNb2xO3 (BTCN) with x=0.0, 0.1, 0.2, and 0.3 were prepared by chemical route with the help of soluble tartarate complexes of Ti4+ and Nb5+ ions. It was found that the substitution of Cu2+ and Nb5+ at the Ti site of BTCN ceramics caused a diffused phase transition. Discontinuous gra…
At normal pressure six structural forms of solid selenium are known. The three red monoclinic allotropes (-, -and -) consist of Se 8 rings and differ in the intermolecular packing of the rings in the crystals. The gray metallic trigonal crystalline selenium (t-Se) is formed by helical polymeric chains with the transco…
The phase formation is investigated and the phase diagram of the Ho 2 O 3 -SrAl 2 O 4 system is constructed. A ternary compound, namely, Ho 2 SrAl 2 O 7 , is revealed. It is established that this compound undergoes incongruent melting.
Ruifrancoite, Ca 2 (□,Mn 2+ ) 2 (Fe 3+ ,Mg,Mn 2+ ,Fe 2+ ,Al) 4 Be 4 (PO 4 ) 6 (OH) 4 (OH,H 2 O) 2 ·4H 2 O, monoclinic, is a newly recognized member of the roscherite group. It occurs as a late vug-filling mineral in albite and muscovite, closely associated with cyrilovite and meurigite in a granite pegmatite at the Sa…
In this paper, we introduce two kinds of magnetization type, and investigate the effect of its direction on the iron loss in brushless DC (BLDC) motor using a 2-D time-stepped voltage source finite-element method (FEM). The iron losses consist of hysteresis and eddy current loss is calculated from the time variation o…
This paper focuses on testing silicone rubber (SiR) and ethylene-propylene-diene monomer (EPDM) blends which are applied as outdoor high voltage insulating materials. The study undertakes an investigation of the properties of aged specimens of SiR, EPDM and a blend of SiR/EPDM materials by exposure to ultra-violet rad…