Materials Literature
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Benchmark problem 10 of the TEAM workshop consists of steel plates around a coil (non‐linear transient eddy current problem). Six computer codes are applied, and 6 solutions are compared with each other and experimental results for eddy current densities as well as flux densities. Some codes were found to give oscilla…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular model for the mechanical properties of elastomers. 2. Synergic effects in bimodal cross-linked networksYves TermoniaCite this: Macromolecules 1990, 23, 5, 1481–1483Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAbsorption method to clean solvent-contaminated process airBjoern L. Armand, Helena B. Uddholm, and Paer T. VikstroemCite this: Ind. Eng. Chem. Res. 1990, 29, 3, 436–439Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 Ma…
Damage production, radiation annealing and stage I recovery in some FCC metals irradiated with ∼ 1 MeV and ∼ 100 MeV ions near 10 K are studied using electrical resistivity measurements. For ∼ 1 MeV light and heavy ion irradiations, the fraction of stage I recovery and the damage efficiency decrease with the PKA media…
Investigations by neutron diffraction and $^{57}\mathrm{Fe}$ M\"ossbauer measurements are reported on the ternary silicides R${\mathrm{FeSi}}_{2}$ (R=r/rPr,Nd) with the orthorhombic structure of the ${\mathrm{TbFeSi}}_{2}$-type (space group Cmcm). This structure, which is closely related to the ${\mathrm{ThCr}}_{2}$${…
The aim of the present investigation is the development of a unifying framework for modeling free-radical suspension and bulk vinyl chloride polymerizations. A fairly comprehensive but realistic model is described that has the ability to predict the rate of polymerization as well as the molecular properties of polymer…
Abstract The development of a quantitative cation‐selectivity model to predict cation‐exchange equilibria has been a desirable but elusive goal in the field of surface chemistry of soil clay minerals. We critically examine several cation‐selectivity models in this study to establish a predictive, quantitative model fo…
The authors consider the modelling of magnetic saturation and hysteresis within finite-element eddy-current calculation procedures. Specific attention is given to time-stepping methods which deal with both saturation and hysteresis and to single-harmonic time-periodic approximations for cycle problems. It is shown tha…
Wood-polymer composites (WPC) of 13 different Malaysian tropical hardwoods and 10 vinyl monomers and mixtures of monomers were prepared by in situ polymerisation using gamma radiation or the catalyst-heat treatment. The polymer loading achievable was found to be dependent on the wood species and the nature of the impr…
Abstract Polyacetylene, which exhibits metallic‐like electrical conductivity upon redox doping, led to the development of a new class of electronic materials. Metallic conductivity in polyacetylene originates from the mobility of charge‐carriers along the highly conjugated π‐electron carbon backbone. On the other hand…
Abstract Auf einen Überblick über Bedeutung und Methoden der Wärmespeicherung in Form sensibler und latenter Wärme folgen die Vor und Nachteile der reversiblen thermochemischen Energiespeicherung im Vergleich zu den konventionellen Energieträgern wie Brennstoffen, d. h. irreversiblen chemischen Energieträgern. Von den…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of potential mechanism-based inactivators of lanosterol 14.alpha.-methyl demethylaseLeah L. Frye and Cecil H. RobinsonCite this: J. Org. Chem. 1990, 55, 5, 1579–1584Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissu…
The water vapour transmission rates (WVTR) through solvent cast polymer films prepared from cellulose acetate, cellulose acetate propionate, and cellulose acetate butyrate have been determined. They were influenced by the relative humidity, the substituent type and the extent of substitution. Increasing the relative h…
The thermodynamic predictions of microstructures in the multicomponent alloys used for duplex stainless steels are discussed in detail in this paper. The production of the duplex ferrite–austenite microstructure by high temperature (1323–1423 K) annealing is considered. Phase diagrams are calculated for Fe–Cr–Ni terna…
Diffraction and absorption losses of plasmon surface waves (PSW) propagating along a metallic grating are investigated numerically as a function of groove depth. A periodicity of diffraction losses is found to exist. The energy flow distribution (EFD) above and inside the grooves is calculated and a similarity between…
Abstract The tensile properties: Young's modulus, ultimate tensile strength, ultimate elongation, the glass transition temperature, and the dynamic mechanical properties (dynamic shear modulus ( G '), loss tangent (Tan δ)), of three epoxy resins (Epon 828, Epon 836, Epon HPT 1071) cured with the disulfide‐containing c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of substituted tetrabenzotriazaporphyrins and a tetranaphthotriazaporphyrin: a route to mono-meso-substituted phthalocyanine analogsClifford C. Leznoff and Neil B. McKeownCite this: J. Org. Chem. 1990, 55, 7, 2186–2190Publication Date (Print):March 1, 1990Publica…
Based on expressions for transient three-phase short-circuit current, the formulas for radial and axial electromagnetic forces acting on transformer windings are derived. The short-circuit forces, include three components: DC component, fundamental-frequency component, and double-frequency component. Using a 17000-kVA…
The smectic-A (Sm-A) to chiral-smectic-C transition has been studied by high-resolution ac calorimetry in seven mixtures of two chiral esters of 2,5-diphenyl pyrimidine (2f+3f) over the range 38.72\ensuremath{\le}${\mathit{X}}_{2\mathit{f}}$\ensuremath{\le}65.30, where ${\mathit{X}}_{2\mathit{f}}$ is the mole percent…
A similar phenomenon of continuation beyond a blow-up point has been found in unsteady Hele-Shaw problems and for one-parameter families of two-dimensional obstacle problems in [23, 21}.