Experimental validation of an eddy current probe for defect detection in thick conducting specimen
P Mahesh Raja,Kavitha Arunachalam,Krishnan Balasubramanian +2 more
- Vol. 1706, Iss: 1, pp 020025
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TLDR
In this paper, the authors presented numerical modeling and experimental measurements of eddy current probe for detecting subsurface defects in 10mm to 15mm conducting specimen, where inner radius(r1), and outer radius (r2), and operating frequency (f) were optimized for deeper penetration in the conducting plate (35 MS/m) for a given coil height and lift off distance.Abstract:
This paper presents numerical modeling and experimental measurements of eddy current (EC) probe for detecting subsurface defects in 10 mm to 15 mm thick conducting specimen. Measurements are presented for a pancake air core coil to detect subsurface defect in 10 mm thick aluminum slab. EC coil parameters namely inner radius(r1), and outer radius(r2), and operating frequency (f) are optimized for deeper penetration in the conducting plate (35 MS/m) for a given coil height(h), and lift off distance (d). Preliminary simulation results are presented for a subsurface defect in 15 mm thick aluminium plate for the optimized EC coil parameters.read more
Citations
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References
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Journal ArticleDOI
Analytical Solutions to Eddy-Current Probe-Coil Problems
C. V. Dodd,W. E. Deeds +1 more
TL;DR: In this paper, the axially symmetric eddy-current problems are solved in two configurations of wide applicability. But the solutions are in the form of integrals of first-order Bessel functions giving the vector potential, from which other electromagnetic quantities of interest can be obtained.
Journal ArticleDOI
Numerical and experimental-study of eddy-current probes in ndt of structures with deep flaws
TL;DR: In this paper, the authors present a numerical and experimental study of an eddy current nondestructive testing system for inspection of cracks under installed fasteners in aircraft structures, which is calculated with an interactive package solving Maxwell's relations for various geometrical coil and material parameters in order to take into account the tolerance on the probe sizes.
Proceedings ArticleDOI
Eddy Current Testing of Thick Aluminum Plates with Hidden Cracks
TL;DR: In this article, the authors present theoretical analysis which gives the possibility to determine optimum excitation frequencies in eddy current examination of thick aluminum plates, which makes it possible to detect shallow cracks located on the reverse side of the specimens.
Proceedings ArticleDOI
Numerical results for the WFNDEC 2012 eddy current benchmark problem
TL;DR: In this article, numerical results for the World Federation of NDE Centers (WFNDEC) 2012 eddy current benchmark problem obtained with a commercial FEM package (Comsol Multiphysics).