Eddy-current inspection modelling of symmetrical work-pieces using three-dimensional probes based on a mixed numerical/modal formulation

2014 ◽  
Author(s):  
Anastassios Skarlatos ◽  
Christophe Reboud
Keyword(s):  
Eddy Current ◽  
Three Dimensional ◽  
Eddy Current Inspection

scholarly journals System for 3D Visualization of Flaws for Eddy Current Inspection

10.14311/818 ◽  
2006 ◽  
Vol 46 (2) ◽  
Author(s):  
A. Dočekal ◽  
M. Kreidl ◽  
R. Šmíd
Keyword(s):  
Eddy Current ◽  
3D Visualization ◽  
Three Dimensional ◽  
Single Frequency ◽  
Scanning System ◽  
Data Processing Method ◽  
Eddy Current Inspection ◽  
Novel Method ◽  
The Fourier Transform ◽  
Automated Scanning

This paper presents a novel method for 3D visualization of flaws detected during Eddy Current (EC) inspection. The EC data was acquired using an automated scanning system equipped with precise eddy current probe positioning. The method was tested on a single frequency instrument with an absolute probe. The EC inspection procedure is implemented statically by registering the operating point of the instrument at each equidistant point on a tested object.The paper describes a data processing method based on the Fourier transform enabling 3D visualization of flaws. This three-dimensional image of the result of a scan enables the position of flaws to be determined, and the size and bevel (angle to the surface) of each detected flaw to be estimated. This research investigated flaws rising from the surface of the tested object, and flaw depth was not evaluated in this work. This method of visualization is simple to implement and is currently targeted for application in EC scanning devices. 

MESSINE, a Parametric Three-Dimensional Eddy Current Model

2000 ◽  
Vol 12 (1) ◽  
pp. 65-86 ◽  
Author(s):  
R. La ◽  
B. Benoist ◽  
B. de Barmon ◽  
M. Talvard ◽  
R. Lengelle ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Model ◽  
Three Dimensional

scholarly journals An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 78
Author(s):  
Tomislav Strinić ◽  
Bianca Wex ◽  
Gerald Jungmayr ◽  
Thomas Stallinger ◽  
Jörg Frevert ◽  
...  
Keyword(s):  
Eddy Current ◽  
Three Dimensional ◽  
Eddy Current Loss ◽  
Theoretical Background ◽  
Air Gap ◽  
Magnetic Flux Density ◽  
Pump Impeller ◽  
Current Loss ◽  
Faraday’S Law ◽  
Transient Simulations

A sealless pump, also known as a wet rotor pump or a canned pump, requires a stationary sleeve in the air gap to protect the stator from a medium that flows around the rotor and the pump impeller. Since the sleeve is typically made from a non-magnetic electrically conductive material, the time-varying magnetic flux density in the air gap creates an eddy current loss in the sleeve. Precise assessment of this loss is crucial for the design of the pump. This paper presents a method for calculating the eddy current loss in such sleeves by using only a two-dimensional (2D) finite element method (FEM) solver. The basic idea is to use the similar structure of Ampère’s circuital law and Faraday’s law of induction to solve eddy current problems with a magnetostatic solver. The theoretical background behind the proposed method is explained and applied to the sleeve of a sealless pump. Finally, the results obtained by a 2D FEM approach are verified by three-dimensional FEM transient simulations.

scholarly journals Three-Dimensional Analytical Modeling of an Eddy-Current-Based Non-Contact Speed Sensor

2021 ◽  
pp. 1-1
Author(s):  
Arda Tysz ◽  
Tibor Stolz ◽  
Annette Muetze ◽  
Michael Flankl ◽  
Spasoje Miric ◽  
...  
Keyword(s):  
Eddy Current ◽  
Analytical Modeling ◽  
Three Dimensional ◽  
Speed Sensor
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