Finally, for this last case, a monolayer plate in aluminium alloy is inspected, as in the case 1, with the same coil.
Monolayer in aluminium
Only a flat bottom hole is machined in this plate.
FBH in the plate of case 4
The experimental measurements have been realized with an impedancemeter, it has also not been necessary to calibrate the results before the comparison.
On figures below are superimposed experimental and CIVA curves. A good agreement is observed between experiment and simulation.
Lissajous curves in impedance plane, vertical cut, 1 kHz (left) et 5 kHz (right)
Comparisons between experimental results and simulation results from CIVA for the case N°1 at 1kHz (top) et 5 kHz (bottom)
Finally, the table below gathers ampltudes and phases values and confirms the very low gap between experiment and simulation, around 2 % maximum in amplitude and 0.5° for the phase..
Maximal amplitudes values and corresponding phases, and discrepancies between CIVA and experiment (references: experimental values)
Go back to MULTILAYERS- CASE N°3
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