Materials Literature
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In this work, the effect of particle size on dielectric, electrical and thermal properties of highly charged (50 wt.%) h-BN micro and nano-filled Ultra High Molecular Weight Polyethylene (UHMWPE) samples was investigated. The dielectric properties of the composite samples were characterized using dielectric spectrosco…
Processing and characterisation of depleted UO2-based Simulated Spent Nuclear Fuel (SIMFuel), which aims to replicate both chemistry and microstructure of Spent Nuclear Fuel (SNF) discharged from a UK Advanced Gas-cooled Reactor (AGR) after a prolonged cooling time is described in this thesis. Thirteen fission product…
The effect replacing Fe atoms with Sc atoms has on the spatial spin-modulated structure and electrical and magnetic hyperfine interactions of 57 Fe nuclei in BiFeO 3 multiferroic is studied by means of Mössbauer spectroscopy. The temperature dependences of the parameter of anharmonicity and hyperfine parameters of the…
R dos Reis, C Ophus, J Ciston, P Ercius, U Dahmen; Towards Identification of Oxygen Point Defects by Means of Position Averaged CBED, Microscopy and Microa
Extensive experimental work in the area of polymer nanocomposites has been done over the past two decades to explore their potential. In this study, a range of related polymer nanocomposite materials was prepared using a solvent blending method, using dichloromethane (DCM), toluene (TOL) and chlorobenzene (CB) to diss…
Edward R White, Ashley Howkins, Charlotte K Williams, Milo S P Shaffer; Investigating the Origin of Luminescence in Zinc Oxide Nanostructures With STEM-Cat
Crosslinked polyethylene (XLPE) has been the cable insulation material of choice in many different transmission and distribution applications for many years and, while this material has many desirable characteristics, its thermo-mechanical properties have consequences for both continuous and emergency cable ratings wh…
BACKGROUND: Patients with spinal cord injury (SCI) deal with various restrictive factors regarding their clothing, such as disability and difficulty with access to shopping centers. OBJECTIVE: We designed a questionnaire to assess attention to clothing and impact of its restrictive factors among Iranian patients with…
Power utilities are constantly increasing their demand for on-line monitoring systems able to dynamically assess the condition of their electrical assets, in order to perform cost-effective maintenance. The power transformers connected to the transmission and distribution networks represent a wide population of electr…
ResumoCopolímeros reticulados à base de divinilbenzeno vêm sendo extensivamente empregados como suportes de catalisadores e complexantes de íons metálicos, adsorventes de compostos orgânicos e fases estacionárias em separações cromatográficas. A introdução de grupos biocidas a estes materiais é relatada em patentes de…
Bi-axially oriented PEN film has superior performance in terms of dielectric strength, mechanical strength, heat resistance, anti-hydrolysis, etc. Thus, it has been widely used for energy storage applications, such as capacitors and batteries. In this paper, we attempted to increase the dielectric strength of PEN film…
In this article, a novel environmental friendly polyester-imide impregnating resin was developed by combining polyester-imide, novel active cross-linking monomer and effective initiator-inhibitor system. The new resin has excellent processing abilities, suitable for usual dipping, VPI, and dip-rolling machines. The co…
We have proposed and designed a current-driven optical gate switch using a Si waveguide and phase-change material. The ON-state loss and the power consumption of the optimized structure are 0.63 dB and 60 mW, respectively.
Functionalization of rubber latex is used to improve some weak properties. One method of functionalization is chemical modification by a photo-catalytic reaction. In this work, the functionalization of styrene-butadiene rubber (SBR) and skim latex were carried out under UV irradiation in the presence of TiO2 film, whi…
The results of the influence of preliminary thermal cyclic deformation and subsequent hardening heat treatment on the microstructure and mechanical properties of hot-rolled sheet steel 10 are presented. It is shown that the use of preliminary thermal cyclic deformation of the steel 10 stock material results in a fine-…
The purpose of this research was to investigate the changing patterns of the 3D rail residual stress as it accumulates on different portions of the rail manufacturing process. These patterns are of interest for manufacturers and railroad companies but also could serve as initial fields for various further numerical an…
Failure of weld joints under single and cyclic pulsating loading conditions is under consideration. A weld joint is modeled by three-layer composite. Stepwise propagation of the internal I mode crack under cyclic loading is investigated. Delamination of bimaterial composed of two structured materials is considered whe…
Silica and carbon black have been widely used as the main reinforcing fillers for improving the properties of natural rubber (NR). In a silica-filled rubber compound, it is known that the low compatibility between NR and silica affects the mechanical properties of rubber products. In order to overcome this drawback, t…
The work presents studies of a new ceramic-metallic material. The base is a ZrO2-Mo cermet which is modified with metallic Mo or Mo85Re15 alloy coating. The structure and microstructure of Mo85Re15 alloy powders and the composite were characterized. The annealing procedure was found to influence phase composition of p…
This paper presents a new energy approach based on the concept of a volume stain-energy-density factor useful to deal with the general problem of brittle fracture for sharp V-notches under mixed-mode I and II. The basic assumption is that the fracture occurs when the volume strain energy density factor arrive at its c…