Materials Literature
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This thesis is concerned with developing a new approach to high voltage transformers condition monitoring, which involve partial discharge (PD) measurement and localisation within high-voltage transformer windings. This is an important source of information for both diagnosis and prognosis of the health of power trans…
This research examines the effect of solid oxide fuel cell (SOFC) operating conditions on carbon deposition in nickel/yttria-stabilized-zirconia (Ni/YSZ) anodes and the effect of carbon deposition on impedance spectra of polarized SOFCs. Although Ni/YSZ anodes are susceptible to degradation from carbon deposition, Ni/…
Stem-succulent halophytes of the genus Tecticornia (commonly known as samphires; sub-family Salicornioideae; family Amaranthaceae, formerly Chenopodiaceae) dominate the margins of the numerous ephemeral salt lakes of inland Australia. These are stressful environments, often typified by aridity, extreme soil salinity a…
Energy and material losses due to friction and wear in mechanical systems account for huge economic and environmental burdens.Approximately one-third of the world's primary energy consumption is attributed to friction; in addition, about 80% of the equipment failure is caused by wear in friction processes.Even relativ…
Abstract Oxide materials might form the basis for the next technological revolutions in fields such as electronics, photovoltaics or heterogeneous catalysis by enabling the production of inexpensive, high capacity and fast nonvolatile memories, neuromorphic computers and control systems, and efficient energy conversio…
Pyrochlore-type oxygen-rich Ce2Zr2O8 phase was prepared successfully by graphite reduction method. With the oxygen[U8]-defective Nd2Zr2O7 substituting for the oxidized precursor phase CeZrO3.5+Δ was carried out the structure comparative analysis with Ce2Zr2O8. The X-ray diffraction (XRD), Raman spectroscopy (Raman), i…
Abrasive jet machining is an effective machining process for processing a variety of Hard and Brittle Material. And has various distinct advantages over the other non-traditional cutting technologies, such as, high machining versatility, minimum stresses on the work piece, high flexibility no thermal distortion, and s…
The impact of recent changes to the ASTM Standard E722 is investigated. The methodological changes in the production of the displacement kerma factors for silicon has significant impact for some energy regions of the 1-MeV(Si) equivalent fluence response function. When evaluating the integral over all neutrons energie…
We study the Allen-Cahn equation \n \nut = ϵ2uxx + f(u) + ϵγW \n \nwith an additive noise term ϵγW for small ϵ > 0, and in particular the limit ϵ → 0. This is a reaction-diffusion equation, where f (∙) is the negative derivative of a symmetric double-well potential. \n \nWe study this equation in the interval (0, 1) w…
The chapter combines analytical (statistical-thermodynamic and kinetic) with numerical (Kubo-Greenwood-formalism-based) approaches used to ascertain an influence of the configurations of point (impurities, vacancies) and line (grain boundaries, atomic steps) defects on the charge transport in graphene. Possible substi…
In spite of the vast array of modelling techniques and force fields available, the study of the phase behaviour, structure, microstructure, and dynamics of mixtures remains a challenging task. A systematic coarse-graining (CG) methodology is employed in this thesis involving the parameterisation of force fields using…
Drilling efficiency is governed by rock cuttings removal by hydraulic forces. The mechanical force introduced by the drill bit removes the rock chips from the parent rock. The chips will be held down until the downward forces due to overburden pressure are overcome. The turbulent jet that flushes away these chips cons…
Our skin is the furthest outpost of the nervous system and a primary sensor for harmful and innocuous external stimuli. As a multifunctional sensory organ, the skin manifests a diverse and highly specialized array of mechanosensitive neurons with complex terminals, or end organs, which are able to discriminate differe…
The high stiffness of nanoparticles combined with a tremendous surface to volume ratio, due to their nano-scaled dimensions, make them potential candidates for mechanical reinforcement in polymeric matrices.In particular, toughening is achieved at very low filler concentrations.However, the dominating toughening mecha…
The torsion of a long elastic bar possessing a normal cross-section bounded by a nephroid is considered by means of anexpansion in polar harmonics, in conjunction with boundary collocation method and the boundary representation of harmonicfunctions.Three types of nephroids are investigated and comparison is carried ou…
Development of environmentally friendly materials that could be involved in the biosphericcycling is one of the key issues of the present time due to both environmental hazard caused by accumulation of synthetic materials in the biosphere and the needs of modern biomedical technologies.The study analyzes the state of…
Two zinc(Ⅱ) complexes [Zn3(T3)(BDC)3(H2O)3]·4H2O(1) and [Zn3(T3)2(H2O)6]·(BDC)3·12H2O(2) have been synthesized by reactions of tri(4-triazolylphenyl)amine(T3) and terephthalic acid (1,4-H2BDC) as auxiliary ligand using solvothermal and slow diffusion method. The complexes were characterized by IR, single crystal and p…
This paper represents a series of online monitoring data from a 500kV bushing on a converter station's transformer. An online monitoring system with a novel tgd measuring method has been successfully used for bushing tgd supervision. Long term data acquisition is evaluated for the insulation integrity of the bushing.…
The current state of the laser induced fluorescence - light detection and ranging (LIF LIDAR) technique for in situ assessment of algal communities and higher plants and its prospective as a cost-effective tool for algae and vegetation mapping and monitoring are discussed.
Microstructure analysis plays an important role in the reliability study of copper Through-Silicon Vias (TSVs). While conventional 2-dimensional (2D) Electron Back-Scatter Diffraction (EBSD) is a useful technique, 3-dimensional (3D) EBSD characterization provides a more accurate picture of the TSV microstructure. Info…