Low frequency eddy current finite element model validation and benchmark studies

Journal Article · Thu Jun 23 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3591875· OSTI ID:21511637

Cherry, M; Knopp, J ^[1]; Mooers, R; Boehnlein, T ^[2]; Aldrin, J C ^[3]; Sabbagh, H A ^[4]

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1. Materials and Manufacturing Directorate, Air Force Research Laboratory (United States)
2. University of Dayton Research Institute, Dayton, OH (United States)
3. Computational Tools, Gurnee, IL (United States)
4. Victor Technologies, LLC, Bloomington, IN (United States)

A finite element method (FEM) model was created to calculate the change in impedance of a coil due to the presence of a notch in a plate. The rectangular notches were created via electrical discharge machining (EDM) in a thick aluminum plate and were positioned at normal and oblique angles (10, 20, and 30 degrees) with respect to the vertical axis of the coil. The FEM method was chosen for this model due to its ability to solve problems in complicated geometries with the use of irregular mesh elements to discretize the solution domain. The change in impedance was calculated from the field variables in the simulation for each probe position along the parallel axis of the plate. The error between the model and the experimental data was approximately 5% for the majority of cases. The validated model was used to investigate more complex problems.

• OSTI ID: 21511637
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1335; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ALUMINIUM
BENCHMARKS
CALCULATION METHODS
CURRENTS
EDDY CURRENTS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC IMPEDANCE
ELEMENTS
FINITE ELEMENT METHOD
IMPEDANCE
MATHEMATICAL SOLUTIONS
METALS
NUMERICAL SOLUTION
PLATES
SIMULATION