Materials Literature
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Brain parenchymal extravasation of contrast has been described after infusion of larger amounts of iodinated X-ray contrast agent. We describe a case in which a patient after infusion of 500 ml iomeprole 350 mg/ml developed neurological symptoms and a subsequent cerebral computed tomography (CT) scan was interpreted a…
The radiation-induced disordering and amorphization are considered. These phenomena are not connected with the fluxes of impurity atoms and radiation defects. The criteria for radiation amorphization which is connected with the degree of mixing of the alloy components, are discussed.
In 2010, the Department of Energy (DOE) Chief of Nuclear Safety and Office of Health, Safety and Security (HSS), with the support of industry experts in atmospheric sciences and accident dose consequences analysis, performed detailed analyses of the basis for the dry deposition velocity (DV) values used in the MACCS2…
Thick nanoporous oxide films exhibiting interference colors were grown on AISI 304L stainless steel by triangular current scan method in 5 M H2SO4 + 2.5 M H2CrO4 using different electrolysis times. The nanocrystalline spinel oxide films thus obtained were electrochemically characterized by cyclic voltammetry at 1 mV•s…
Models and mechanisms of intrinsic radiation defect formation in the metals and alkali-halide crystals are considered. The effect of irradiation conditions (temperature, absorbed dose, etc.) on the formation of the primary and secondary defects, fomation of the aggregate radiation defects (voids), and affection of hea…
The purpose of this work was to study both the performance and the effectiveness of using long carbon fiber reinforced concrete (LCFRC) in impact loading. Materials studied include four square concrete panels with fibers, two panels with reinforcement, and two panels with plain concrete. Two different types of long ca…
In this study, the wrinkle effect on the tear propagation direction was studied by LEFM based approaches and by cohesive zone failure analysis. A rectangular tensile membrane configuration and a corner-loaded square membrane configuration both having a slant center-cut were considered. The membrane was modeled using s…
Advances toward the development of light-weight fully electric aerospace structures lead to the need of replacing on-board batteries with lighter and more efficient energy storage devices and systems. Here a novel self-rechargeable multifunctional carbon fiber composite is presented. The composite has the capability t…
Gamma uranium–molybdenum alloys have been considered as the fuel phase in plate type fuel elements for material test reactor (MTR) reactors, mainly owing to their acceptable performance under irradiation and metallurgical processing. Regarding their usage as a dispersion phase in aluminum matrix, it is necessary to co…
The surface properties of boron-doped nanocrystalline diamond (BDND) films were investigated in regard to their electrochemical response to phenol, 4-chlorophenol and 4-nitrophenol. The films were produced using Hot Filament CVD technique on Si substrate with a gas mixture of CH4/H2/Ar. The morphology and quality of t…
This paper reviews the thirty year operating history of the Pittsfield Resource Recovery Facility with emphasis on the fifteen year period between 1996 and 2011. It is a sequel to previous papers published by the co-author in the 1982 and 1996 Proceedings of the ASME National Waste Processing Conferences. The first of…
Potentiodynamic curves were measured in electrolytes of 0.2Mol/L NaOH with the addition of compounds used in conventional and in recently developed anodizing baths. The curves showed as a characteristic behavior passivity breakdown at about +3V, high current densities of magnesium dissolution, followed by secondary pa…
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Corrosion inhibitors are compounds that reduce or eliminate corrosion. The ability of a molecule to act as corrosion inhibitor can be attributed to the presence of S, N and O atoms in the molecule. Best inhibition efficiency is attributed to compounds with S atoms. This paper reports the study of parabanic acid and a…
This paper is focused on the development of multi-component polyamide 11 (PA11) nanocomposite formulations with enhanced fire retardant (FR) properties for application in selective laser sintering (SLS). Test specimens of PA11 containing various percentages of intumescent FR additive, montmorillonite (MMT) clay, and c…
In this paper we further investigate acoustic energy as a tool to enhance the recovery rate of a self healing material. Time reversal is the method used for the focusing of acoustic energy at a recovering location. Our recent tests, which have produced promising results, included applying acoustic time reversal in an…
Various configurations of aramid sleeves consolidating unidirectional fiberglass composite rods were tested for compression strength after impact. Cylindrical specimens were radially impacted at 5 J (3.7 ft-lbs) or 10 J (7.4 ft-lbs), and compared to undamaged control specimens. These structural elements represent loca…
these two inelastic materials provides the possibility of developing residual stress fields in the composite. These stress fields could be used to apply a prestress on the ceramic phase which takes advantage of the superior mechanical response exhibited under compressive loadings. To explore the development of these r…
Adhesively bonded joints used on spacecraft are subject to thermal cycling in orbit. Effect of this ageing is investigated in terms of polyepoxy adhesive properties and corresponding assemblies. A simplified isothermal ageing model is used to understand effect of temperature and secondary vacuum. Vacuum involves the s…
Conductive hybrid coatings are an alternative for the production of multifunctional coatings, enabling wide application in industry for metal surface finishing. Recently, the use of pre-treatments using the sol-gel process has become an attractive area of study, due to its high efficacy against corrosion, low cost and…