... Licensed re-use rights only Inverse problems Tomography Numerical modelling Finite element method Electrical conductivity Inhomogeneous media The paper presents a new method for testing the humidity of brick walls by electrical tomography (Duda et al., 2016 ; Hoła et al...

... 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...

... conditions: (Equation 9) © Emerald Group Publishing Limited 2015 FEM Eddy current Boundary conditions Magnetic vector potential Electrical conductivity Electrical steels are usually categorised as grain oriented and non-grain oriented. The core losses in non-oriented sheets...

... Publishing Limited 2013 Electrical conductivity Dielectric properties Electronic equipment and components Microstrip lines Method of lines Finite metallisation thickness The increase of the strip thickness can enlarge the area of the conductor cross section (S) directly, which in turn...

... v_k≤12 per cent. The value of mean square deviation is calculated from the following formula: Equation 2 where: n – the number of specimens taken. Boundary‐elements method Electrical conductivity Inhomogeneous media Inverse problems Numerical modelling Tomography...

... 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...

... 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...

... 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...

... to the difficulties in containing the touch and step voltages under the permissible values stated by CENELEC HD 637‐S1 are more serious. © Emerald Group Publishing Limited 2009 Electric power systems Electrical conductivity Electric power transmission Inside urban areas the earthing systems...

... integral tables (Gradsteyn and Ryzhik, 2000 ; Prudnikow et al., 1992) do not contain solutions to this kind of integral. © Emerald Group Publishing Limited 2009 Integral equations Integration Eddy currents Electrical conductivity Subject of our investigation are the eddy...

... (T_{Curie) above which ferromagnetic materials loose their magnetic features. Electron beam welding Finite element analysis Metals Electrical conductivity The application of highly accelerated electrons as a tool for material processing in fusion, drilling and welding processes and also}...

... Z_s such as (Stoll, 1974): Equation 5   Equation 6 where, vector n is pointing out of the conducting region Ω_c. © Emerald Group Publishing Limited 2008 Electrical conductivity Modelling Surface conductivity Electrical impedance Finite element formulations using...

... Electrical conductivity Simulation Non‐linear dynamic system theory has been used to study some phenomena present in the p‐n‐p‐n‐p structures resulting from their S negative differential conductivity properties (Blicher, 1964 ; Gentry, 1964...

... and e as unknowns instead of the perturbed fields h_p and e_p directly. Another implication is the homogeneous nature of the BCs, equation (6a) or equation (6b). © Emerald Group Publishing Limited 2007 Finite element analysis Electrical conductivity...

... Emerald Group Publishing Limited 2005 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...

...) and μ_p^I(H_{y,rms) and averaging them: Equation 12 Electromagnetism Optimization techniques Numerical analysis Electrical conductivity Shielding problems are often solved by adding passive shields: sheets in conductive and/or ferromagnetic material. In order to design}...

...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...

...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...