Electricity: measuring and testing – Magnetic – Calibration
Patent
1989-07-18
1990-10-16
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Calibration
72377, 73 1R, G01R 3500
Patent
active
049638262
ABSTRACT:
A reference standard and a method for manufacturing a reference standard for use in calibrating an eddy current probe is disclosed. The reference standard is produced from a block of metal that is deformed by an indentation tool to provide a notch of prescribed dimensions. The reference standard is compressed along an axis substantially transverse to the longitudinal axis of the notch to substantially close the notch. A family of reference standards formed in this manner can be produced to calibrate an eddy current probe prior to use of the probe in evaluating metal components such as aircraft framework for the presence of fatigue cracks and the like.
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Capobianco Thomas E.
Dube William P.
Fizer Kenneth W.
Edmonds Warren S.
Englert Alvin J.
Hashim Paul C.
Strecker Gerard R.
The United States of America as represented by the Secretary of
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