Eddy current system and method for estimating material...

Details Eddy current system and method for estimating material... Eddy current system and method for estimating material...

2007-08-07

2010-11-09

LeDynh, Bot L (Department: 2858)

Electricity: measuring and testing

Magnetic

Hysteresis or eddy current loss testing

C324S202000, C324S228000

Reexamination Certificate

active

07830140

ABSTRACT:
A method of inspecting a test part is provided. The method includes positioning an eddy current probe on a surface of the test part and scanning the test part using the eddy current probe to generate a first signal corresponding to a no lift-off condition of the test part. The method further includes positioning the eddy current probe at a pre-determined distance from the surface of the test part and scanning the test part using the eddy current probe positioned at the pre-determined distance from the test part to generate a second signal corresponding to a lift-off condition of the test part. The method also includes processing the first and second signals to estimate an electrical conductivity of the test part.

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C. V. Dodd & W. E. Deeds: “Analytical Solutions to Eddy-Current Probe-Coil Problems”; Journal of Applied Physics, vol. 39, No. 6; May 1968; pp. 2829-2838.

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