... dampness but show changes in electrical resistance, capacitance or radio wave reflection/absorption in the substrate, depending on the type of electrical moisture meter in use. They also tell us that certain salts and electrically conducting materials will give erroneous and misleading results: all...

... The external factors can influence the discharge magnitude and discharge repetition rate via affecting the electrical conductivity of the material: DC PD is more frequent and with higher discharge magnitude when the cavity is closer to the conductor or the current through the conductor is higher. Both DC PD...

... conductivity than a healthy tissue. The paper aims to the new recently developed magnetoacoustic tomography with magnetic induction (MAT-MI) which can be deployed for electrical conductivity imaging of low-conductivity objects. Solving a test problem by using an analytical method is a useful exercise to check...

... both electric field and charge dynamics under DC conditions into consideration. The effects of loading level or current through the conductor, cavity location and material properties on partial discharges have also been studied. Findings Electrical conductivity is important in determining...

... field, the following expression is obtained: (Equation 7) Now, (5) can be written as: © Emerald Group Publishing Limited 2015 FEM Eddy current Boundary conditions Magnetic vector potential Electrical conductivity Electrical steels are usually categorised as grain...

.... The substrate of microstrip line is alumina and its thickness is 0.254 mm, accordingly the width of the strip is 0.26 mm. Five groups of microstrip lines are made whose strip thicknesses are set as 0.5, 1, 1.5, 2, 2.5 μm, respectively. © Emerald Group Publishing Limited 2013 Electrical...

... of specimens taken. J. Sikora can be contacted at: sik59@wp.pl © Emerald Group Publishing Limited 2012 Boundary‐elements method Electrical conductivity Inhomogeneous media Inverse problems Numerical modelling Tomography Brick wall dampness testing plays a major role...

... is to study the use of saline solution for modifying the electrical conductivity of the tissue in order to obtain a more uniform lesion. Design/methodology/approach A numerical analysis using finite element method on a simplified model of the porta hepatis is performed. The tumor tissue is divided...

... this kind of tubular electrode. Design/methodology/approach Data concerning electrical conductivity and dimension of the damaged tissue after RF ablation procedure were obtained from ex vivo samples. Next, numerical models using 3D finite element method were obtained reassembling the conditions...

... applications. © Emerald Group Publishing Limited 2009 Flow Image processing Capacitance Electrical conductivity Electrical tomography, in the form of electrical capacitance tomography (ECT) or electrical resistance tomography (ERT), can be applied for the non‐invasive imaging...

... for the analytical treatment of earthing systems interconnected through BBC, that takes into account also the conductive effect. © Emerald Group Publishing Limited 2009 Electric power systems Electrical conductivity Electric power transmission Inside urban areas the earthing systems...

... Publishing Limited 2009 Integral equations Integration Eddy currents Electrical conductivity Subject of our investigation are the eddy currents inside a rectangular bar made from conductive material. First investigations on this topic have been done by measurements (Schwenkhagen, 1927...

... Limited 2009 Electron beam welding Finite element analysis Metals Electrical conductivity Using identity ∇ ·  J =0 and electric potential definition E =−∇V, we transform equation (1) to the following equation: Equation 12 where T is temperature calculated in HT...

... of surface impedance condition with the 3D finite element magnetic scalar potential formulation is well known. The originality is to take into account holes (multiply connected conductors). © Emerald Group Publishing Limited 2008 Electrical conductivity Modelling Surface conductivity Electrical...

... parameterized analyses on the signal form and the conductor characteristics. © Emerald Group Publishing Limited 2007 Finite element analysis Electrical conductivity A precise consideration of the skin and proximity effects in conductors is usually important for the sources themselves as well...

... on the anodic voltage. As we will see, this equation allows continuous bifurcation: non‐uniform spatial current density distributions can arise from the homogeneous steady state J=0. © Emerald Group Publishing Limited 2007 Electrical conductivity Simulation Non‐linear dynamic...

... Electric fields Electrical conductivity Electrical properties Gases Geometric planes and solids There can be some gas voids having different dimensions and geometric shapes in different types of isolation constructions which are produced with assorted technological methods. The gas voids mostly...

... to the linear case, the shielding factor depends on H₀. © Emerald Group Publishing Limited 2005 Electromagnetism Optimization techniques Numerical analysis Electrical conductivity Shielding problems are often solved by adding passive shields: sheets in conductive...

...F. Ferraioli; A. Formisano; R. Martone Purpose Electrical resistive tomography (ERT) is a non‐destructive testing technique based upon the reconstruction of the electrical conductivity profile inside a body from measurement made on its boundary. In the literature about the inverse problems the ERT...

...P. Di Barba; E.R. Mognaschi; M.E. Mognaschi; A. Savini Purpose The purpose of the paper is to define a methodology for identifying the electric conductivity and permittivity of lossy dielectric materials employed in a class of small dielectric motors, knowing the motor torque. Reference is made...