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Eddy currents COMSOL Multiphysics?

Eddy-current testing

Current transformer

Magnetic induction tomography

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Eddy current testing is a widely used non-destructive technique in the metal industry for inspecting electrically conductive materials. COMSOL Multiphysics software has been used to model and experimentally validate the eddy current testing process, showing reliable results that are in harmony with experimental data . The optimization of eddy current transducers, which are used in non-destructive testing, has been studied using a method that involves three toroidal air cored coils . COMSOL has also been used to analyze the accuracy and relevant elements of eddy current simulations, providing insights for NDE specialists . Additionally, transient finite element analysis using COMSOL has been employed to analyze the effects of eddy currents in the operation and design of transformers . Furthermore, COMSOL Multiphysics has been used to establish a measurement model for magnetic induction tomography, demonstrating its effectiveness in simulating the MIT sensor .

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Open access•Journal Article•DOI Magnetic Induction Tomography Simulation Analysis Based on Comsol Multiphysics Soft Jingwen Wang, Xu Wang, Dan Yang, Kaiyang Wang, Ye Zhou - Show less +4 more 01 Jul 2018 2 Citations	The paper mentions that a three-dimensional finite element model has been developed in COMSOL Multiphysics to research the eddy current distribution and induced voltage in the sensor.
Proceedings Article•DOI Eddy currents benchmark analysis with COMSOL Javier I. Etcheverry, Daniel H. Ziella - Show less +1 more 18 Feb 2014 1 Citations	The paper discusses the results obtained using COMSOL for a set of benchmark cases in eddy currents. It analyzes the accuracy of the results and provides information on the simplicity, computer requirements, and problems faced when solving.
Open access Transient Electromagnetic-Thermal FE-Model of a SPICE-Coupled Transformer Including Eddy Currents with COMSOL Multiphysics 4.2 Holger Neubert, Thomas Bödrich, R. Disselnkötter, Abb Ag - Show less +3 more 01 Jan 2011 8 Citations	The paper discusses the effects of eddy currents in a transformer and includes them in the electromagnetic and thermal finite element modeling and transient simulation using COMSOL Multiphysics.
Open access•Journal Article•DOI Optimization of the eddy current transducer using COMSOL Multiphysics® and MATLAB® software Konrad Dudziak, Krzysztof Stawicki, Andrzej Brykalski - Show less +2 more 01 Jan 2018 1 Citations	The paper discusses the use of COMSOL Multiphysics software for simulating electromagnetic phenomena in the eddy current transducer used in nondestructive testing.
Book Chapter•DOI Simulation of Electromagnetic Systems by COMSOL Multiphysics S. Khelfi, B. Helifa, I. K. Lefkaier, L. Hachani - Show less +3 more 26 Nov 2019	The paper discusses the use of COMSOL Multiphysics software to model and validate non-destructive testing by eddy currents.

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What is electromagnetism?4 answersElectromagnetism is a branch of science that deals with the interactions between electric charges, whether they are stationary or in motion. It is described by four vector quantities: the electric field E, the electric displacement D, the magnetic field H, and the magnetic flux density B. Electromagnetic waves, which include visible light and other forms of radiation, are produced by oscillating electric and magnetic fields. Electromagnetic fields can have natural or man-made sources, and they can have various effects on biological systems. Electromagnetism is fundamental to understanding the physical laws that govern the behavior of electric charges and the interactions between them.

What are the applications of eddy current testings in carbon fiber reinforced polymer?5 answersEddy current testing has various applications in carbon fiber reinforced polymers (CFRPs). One application is the detection of defects in CFRPs, such as crack defects and interfacial debonding. Another application is the detection of delamination damage in CFRP composites. Eddy current testing can also be used to identify artificial defects in CFRPs by analyzing changes in the frequency of the output signal. Additionally, eddy current testing can be used for automatic defect detection and visualization of delamination inside CFRPs. Overall, eddy current testing is a valuable nondestructive testing method for detecting various types of defects and damage in carbon fiber reinforced polymers.

What is the best book about "eddy current damping"?5 answersEddy current damping is a topic that is covered in several papers. Cortés et al. propose a Zener viscoelastic model for explaining the damping originated in a solid vibrating in a magnetic field. Cheah and Sodano discuss the advantages of using magnetic dampers for suppressing excessive vibration in rotating systems. Wu et al. propose eddy current damping as a mechanism for reducing vibrations in magnetically actuated neurosurgical tools. You-Yu presents an eddy current type damping mechanism that uses a magnetic braking unit to generate eddy currents and braking force. Ebrahimi et al. develop a novel eddy current damper consisting of a conductor and an array of magnets, which dissipates vibration through motional eddy currents and Joule heating. These papers provide valuable insights into the concept of eddy current damping.

Magnetic fields of coil-core electronic magnets?5 answersThe abstracts provide information on various aspects of magnetic fields in coil-core systems. Popov proposes a three-loop model for calculating average nonuniform electric and magnetic fields in a cylindrical coil-ferromagnetic core system. Van Casteren et al. discuss the inclusion of relative permeability and currents in the equations for magnetic fields using the extended charge method, resulting in a significant reduction in calculation time. Nardi et al. present a study on the practical implementation of transverse magnetic fields in electron beam therapy, including calculations of magnetic fields produced by different coil configurations and their impact on dose distribution. Qun studies the magnetic field distribution characteristics of coils with thick turns and multi layers, deriving an equation for calculating magnetic induction intensity near the axis. Franzen analyzes the generation of uniform magnetic fields using circular coils, finding the optimum shape of the coil cross section for generating very uniform fields.

How can eddy currents be used to control the flow of fluids?5 answersEddy currents can be used to control the flow of fluids by utilizing various devices and techniques. One approach involves the use of a valve with repelling magnets and shuttle magnets that create eddy currents in a tube, resulting in a biasing force that controls the movement of the shuttle and regulates the flow of the fluid. Another method utilizes a device with warped blades that form a non-zero angle of attack and a leading-edge sweep angle, allowing for control of fluid properties and attenuation of pressure waves. Additionally, an eddy pump coupled with a controller can dispense a predefined quantity of fluid, reducing the risk of overloading or inefficiencies. Eddy current modeling can also be employed in non-destructive testing of conducting materials, providing a means to measure and control fluid flow. Furthermore, an eddy flow sensor utilizes the displacement of a sensing rod caused by fluid flow to generate inducted electromotive force, which can be used to measure and control the flow of the fluid.

What is electromagnetic?2 answersElectromagnetic refers to the combination of electric and magnetic fields. It is generated when charged particles are at rest or in motion. Electric fields depend on the presence of positive and negative charges, while the rate of change of charge generates current, which in turn produces a magnetic field. Electromagnetic radiation is a form of energy that travels through space in the form of waves. It includes various types of energy such as light, X-rays, and microwaves, all of which exhibit wavelike properties. Electromagnetism is one of the fundamental interactions of nature and is responsible for the interaction of electrically charged particles. It manifests as electromagnetic fields and is involved in various phenomena encountered in daily life. The electromagnetic field, particularly in the nonionizing range, is a physical phenomenon that is not directly sensed by humans but can be detected through its effects, such as wireless transmission and heating of objects.

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