Measurement of wall thicknesses particularly of a blade, by...

Details Measurement of wall thicknesses particularly of a blade, by... Measurement of wall thicknesses particularly of a blade, by...

2007-04-25

2009-06-23

Whittington, Kenneth J (Department: 2862)

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

Reexamination Certificate

active

07550968

ABSTRACT:
A method for evaluating the wall thickness of a hollow part, of the turbomachine blade type, at least at a point having a determined radius of curvature at this point, within determined ranges of radii of curvature and thicknesses, including the determination of impedance values of an electrical circuit formed by an eddy current detector applied to the wall, and the insertion of these values into a digital processing unit with a neural network, wherein the network parameters have been defined in advance by learning on spacers having a determined radius of curvature and thickness in the ranges.

REFERENCES:
patent: 4924182 (1990-05-01), Vernon et al.
patent: 6552536 (2003-04-01), Trantow
patent: 6806703 (2004-10-01), Le Bihan et al.
patent: 7019519 (2006-03-01), Le
patent: 1 167 917 (2002-01-01), None
patent: WO 98/02714 (1998-01-01), None
patent: WO 03/073040 (2003-09-01), None
Yann Le Bihan, 3-D Finite-Element Analysis of Eddy-Current Evaluation of Curved Plates, IEEE Transactions on Magnetics, vol. 38, No. 2, Mar. 2002, pp. 1161-1164.
Y. Le Bihan, et al., “Wall thickness evaluation of Single-crystal hollow blades by eddy current sensor”, NDT&E International, vol. 34, No. 5, XP-004249269, Jul. 2001, pp. 363-368.

Affiliated with

Also associated with

Rating

Measurement of wall thicknesses particularly of a blade, by... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measurement of wall thicknesses particularly of a blade, by..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of wall thicknesses particularly of a blade, by... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4113165