| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lewin, Pl
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2022Numerical simulation of lightning strike damage to wind turbine blades and validation against conducted current test datacitations
- 2021Estimation of Contact Resistivity in Lightning Protection Equipotential Bonding Joints of Wind Turbine Bladescitations
- 2021Investigating the Physiochemical Effects of Verdigris Contamination found on a Polymeric Cable Sealing End
- 2020Effect of surfactant molecular structure on the electrical and thermal performance of epoxy/functionalized‐graphene nanocompositescitations
- 2019Effect of temperature on the dielectric properties of hydrofluoroethers and fluorinated ketonecitations
- 2019Understanding the cross-linking reactions in highly oxidized graphene/epoxy nanocomposite systemscitations
- 2019Structural and chemical comparison between moderately oxygenated and edge oxygenated graphene: mechanical, electrical and thermal performance of the epoxy nanocompositescitations
- 2018On the effect of solvent method processing on epoxy resin systemscitations
- 2018Measuring and simulating partial discharge activity in a spherical cavity during electrical ageing processescitations
- 2016Aging mechanisms of X2 metallized film capacitors in a high temperature and humidity environmentcitations
- 2016Dielectric properties of environmental friendly cooling fluidscitations
- 2015Electro-chemical degradation of thin film X2 safety capacitors
- 2015The Effect of Resin Stoichiometry and Nanoparticle Addition on Epoxy/Silica Nanodielectrics
- 2014Passivators, corrosive sulphur and surface chemistry. Tools for the investigation of effective protection
- 2014Numerical modelling of thermal decomposition processes and associated damage in carbon fibre compositescitations
- 2014Exploratory dielectric study involving ultra-low content of Si-C-Al in epoxy
- 2014A Comparison of Electrical Breakdown Characteristics of Composite Materials Prepared With Unmodified Micro and Nano Scale Barium Titanate
- 2013Degradation Behaviour of Solid Insulation Under Cryogenic Conditions
- 2013Applications of Liquid Crystals in Intelligent Insulation
- 2013Impact of Corrosive Sulfur in Transformer Insulation Paper
- 2013Modelling of partial discharge pulses in high voltage cable insulation using finite element analysis software
- 2013Modelling PD in cavities and PD-based degradation mechanisms
- 2012Paper & power: modifying electrical insulation paper
- 2012Two Dimensional Numerical Model to Predict the Thermal-Chemical Degradation of a piece of Carbon Fibre Composite (CFC) due to Laser Ablation
- 2012Applications of Liquid Crystals in Intelligent Insulation
- 2011The thermal and electrical properties of nano-silicon dioxide filled epoxy systems for use in high voltage insulation
- 2011Transport properties and current flow patterns in homogeneous strongly anisotropic materials
- 2011An investigation into improving the breakdown strength and thermal conduction of an epoxy system using boron nitride
- 2011Effects of nanoparticle and stoichiometry on properties of an epoxy system
- 2011Smart Materials as Intelligent Insulation
- 2011Effect of Cross-Linking on the Electrical Properties of LDPE and its Lightning Impulse Ageing Characteristics
- 2001Dynamic AC surface discharge characteristics of PMMA and LDPEcitations
Places of action
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conferencepaper
A Comparison of Electrical Breakdown Characteristics of Composite Materials Prepared With Unmodified Micro and Nano Scale Barium Titanate
Abstract
High permittivity polymer matrix composites (PMCs) have been widely researched, especially in the field of microelectronics. For this study, high permittivity materials were investigated for their potential to form part of a multi-layer electric field detector. The two main requirements for such composites were high permittivity and a dielectric strength comparable to most standard polymers used as dielectric materials.<br/> <br/>Polystyrene was selected as a host polymer due to its high dielectric strength and amorphous structure. Barium titanate, a ferroelectric ceramic from the perovskite family, was selected as a high permittivity filler. Polymer permittivity in PMCs is usually orders of magnitude lower compared to the filler permittivity, although the resultant permittivity of the composite is generally markedly lower than the permittivity of the filler may suggest. This is because very little energy is stored in the ceramic filler, such that any increase in composite permittivity is due to an increase in the average field with the polymer matrix.[1]<br/><br/>Micro and nano scale barium titanate was blended into polystyrene in an effort to discern the initial differences between composites prepared with the two different filler types. It was found that the micro scale barium titanate was well dispersed and from studying SEM micrographs, appeared to have a good particle size distribution. The nanoscale barium titanate was found to be very poorly dispersed in polystyrene, with a wide particle size distributions formed of weakly bound aggregations and some seemingly chemically bonded agglomerations which were regular in shape with a surface texture which was indicative of tightly bound primary particles. Consistent with the differences in particle dispersion within the micro and nano composites, there was a marked difference in AC breakdown strength between the different materials. All electrical breakdown data was analysed using a 2 parameter Weibull distribution. Figure 1 compares the ? values for the micro and nano composites at different filler loadings.<br/>