A5053756126- Non-Destructive Testing Techniques
- Electromagnetic Scattering and Analysis
- Magnetic confinement fusion research
- Electromagnetic Simulation and Numerical Methods
- Superconducting Materials and Applications
- Ultrasonics and Acoustic Wave Propagation
- Particle accelerators and beam dynamics
- Geophysical Methods and Applications
- Electrical and Bioimpedance Tomography
- Wireless Power Transfer Systems
- Welding Techniques and Residual Stresses
- Energy Harvesting in Wireless Networks
- Magnetic Properties and Applications
- Microwave Imaging and Scattering Analysis
- Advanced Antenna and Metasurface Technologies
- Fusion materials and technologies
- Electromagnetic Compatibility and Measurements
- Numerical methods in engineering
- Geophysical and Geoelectrical Methods
- Numerical methods in inverse problems
- Microwave and Dielectric Measurement Techniques
- Advanced Numerical Methods in Computational Mathematics
- Electromagnetic Compatibility and Noise Suppression
- Induction Heating and Inverter Technology
- Advanced Battery Technologies Research
Università degli studi di Cassino e del Lazio Meridionale
2016-2025
Center for Research and Telecommunication Experimentation for Networked Communities
2022-2023
National Agency for New Technologies, Energy and Sustainable Economic Development
2012-2022
University of Naples Federico II
2007-2020
Consorzio CREO (Italy)
2016
Michigan State University
2014
University of Perugia
2008
In a power plant scale fusion reactor, huge amount of thermal produced by the reaction and external heating must be exhausted through narrow area divertor targets. The targets withstand intense bombardment diverted particles where high heat fluxes are generated erosion takes place on surface. A considerable volumetric nuclear also exhausted. To cope with such an unprecedented exhaust challenge, highly efficient cooling capacity is required. Furthermore, fulfill other critical functions as...
Purpose.: We evaluated layer-by-layer retinal thickness in spectral-domain optical coherence tomography (SD-OCT), determined by automated segmentation analysis (ASA) software healthy and early age-related maculopathy (ARM) eyes. Methods.: There were 57 eyes (specifically, 19 under 60 years old, over 60, ARM eyes) recruited into this cross-sectional study. The mean ages 36.78 (SD, ±13.82), 69.89 ±6.14), 66.10 ±8.67) years, respectively, the three study groups. SD-OCT scans transferred a...
Thickness measurements of metallic plates are mandatory in many industrial scenarios. Methods based on Eddy Current Testing (ECT) ideal for fast and accurate online contact–less thickness measurements, making them very attractive the Industry 4.0 scenario. This contribution is focused a specific robust ECT technique proposed past by scientific community. The main limitation its applicability to thin materials only, where material much smaller than overall size probe. Extending range thicker...
Two issues of the resistive wall mode (RWM) control code maturity are addressed: inclusion advanced damping physics beyond ideal MHD description, and possibility taking into account influence 3D features conducting structures on stability control. Examples formulations computational results given, using MARS-F/K codes CarMa code. The MARS-K calculations for a DIII-D plasma shows that fast ion contributions, which can give additional drift kinetic stabilization in perturbative approach, also...
This contribution focuses on the nondestructive evaluation of thickness metallic plates, by means eddy current testing. Specifically, we present a method for reducing/optimizing measurement time approach presented in [8], while keeping high accuracy suitable industrial applications. In [8] key feature estimating plates is value frequency where proper quantity achieves its minimum value. To get measuring plate, this needs to be located an accurate manner. turns, requires "many" measurements...
In this article, we derive low-complexity behavioral analytical models of the mutual inductance between coupling coils wireless power transfer systems (WPTSs), as functions their reciprocal position. These are extremely useful in characterization and design optimization WPTSs. Multiobjective genetic programming algorithm is adopted to generate ensuring an optimal tradeoff accuracy complexity. The training validation datasets needed for generation here obtained by performing numerical full...
In this paper we analyse the effects of three-dimensional ITER conducting structures on resistive wall modes (RWMs) growth rates. particular, a highly detailed description thick blanket modules (BMs) is given, with volumetric mesh including slits, holes, pockets and an anisotropic resistivity to take into account cooling channels. Also other important details vacuum vessel are included, such as outer triangular support, copper cladding, port extensions. To deal resulting huge computational...
This paper concerns fast electromagnetic modeling of volumetric cracks in conductive materials under eddy-current inspection. The underlying numerical method is described. model tested on aluminum structures employed aeronautical manufacture. computational results obtained with the display satisfactory agreement respective experimental and by representing as nonconductive surfaces.
This paper presents a novel homogenization technique to retrieve the effective permittivity of an interconnect embedded in inhomogeneous dielectrics, with arbitrary number conductors. The is based on monotonicity property suitable matrices associated transmission line model. values are obtained by checking index related eigenvalues such matrices. requires only knowledge, at single frequency point, any terminal describing original (e.g., impedance, admittance, or scattering matrices), either...
This article applies monotonicity principle to time constants in pulsed eddy current testing. allows for a non-iterative imaging method defects conducting materials. The source free response testing consists of linear combination exponential decaying waveforms. A major challenge this is accurately estimate the from measurement such responses. Preliminary results estimating dominant are presented. Potentially, information can be used predict size volumetric defect regardless its location,...
We report on further measurements and a numerical solution for proposed benchmark problem involving an eddy-current nondestructive evaluation configuration. This is simplified version of the inspection fastener holes in aircraft structures, comprising combinations plates with through crack. Previously, only line (B-scan) data were provided coil impedance, while this paper, we provide precision surface (C-scan) as well details critical parameters problem. Furthermore, experimental are cross...
This paper is focused on the non-iterative (direct) imaging of conductive materials from magnetic induction tomography data. Specifically, interest surface-breaking defects in so-called small skin-depth regime where (i) skin depth smaller than relevant geometrical size problem and (ii) displacement current still negligible. Under these conditions can be modeled by means an elliptic PDE. Therefore, inverse solved 'monotonicity method', a fast algorithm recently developed authors for solving...
Eddy current imaging is an example of inverse problem in nondestructive evaluation for detecting anomalies conducting materials. This paper introduces the concept time constants and associated natural modes eddy imaging. The monotonicity then described applied to develop a non-iterative method. proposed method has low computational cost which makes it suitable real-time operations. Full 3D numerical examples prove effectiveness realistic scenarios.
The adaptive fast multipole method is combined with a three-dimensional (3-D) eddy-current integral formulation using edge-element-based shape functions to reduce the computational complexity and memory requirements from order N/sup 2/ nearly N, where N number of edge-related unknowns. effectiveness this approach verified reference analysis some 3-D problems practical interest.
Abstract This work is focused on quantitative imaging of defects in conductive materials by means eddy current testing (ECT). By we mean methods based numerical models the interaction between probe and defect(s). The attempt to provide an image defect at variance commercial instruments that generally detect may have limited capabilities extracting its major sizes calibration curves obtained predefined conditions. In addition, probe–defect play a relevant role for computer-aided design probe....
This paper presents the design and optimization of an eddy-current testing system for imaging surface-breaking defects in conductive materials. The reconstruction is obtained by efficient noniterative method, based on monotonicity property that makes approach suitable real-time imaging. extremely difficult, because its performances feasibility can be viewed only many perspectives, leading to a multiobjective problem. main contributions this are: 1) introducing appropriate indexes measuring...
Small dielectric objects may resonate if their permittivity is sufficiently high. The authors show that these resonances have a magnetoquasistatic origin and derive properties by studying the spectrum of an integral operator.
This paper proposes a system-level approach suitable to analyze the performance of dynamic Wireless Power Transfer System (WPTS) for electric vehicles, accounting uncertainty in vehicle trajectory. The key-point is use an analytical behavioral model that relates mutual inductance between coil pair their relative positions along actual derived from limited training data set simulations, by using multi-objective genetic programming algorithm, and validated against experimental data, taken real...
The European Union funded project MICEV aims at improving the traceability of electrical and magnetic measurement charging stations to better assess safety this technology with respect human exposure. paper describes some limits instrumentation used for measurements in stations, briefly presents two new calibration facilities field meters electric power meters. Modeling approaches efficiency exposure assessment are proposed. In latter case, electromagnetic computational codes have been...
This paper is focused on the nondestructive inspection of concrete rebars by using eddy current testing. Many practical low frequency systems are capable locating and estimating size cross-section via calibration charts. Here we develop a quantitative non-ite rative imaging method based numerical model probe-specimen interaction.