Electricity: measuring and testing – Magnetic – Magnetic sensor within material
Reexamination Certificate
2007-11-13
2007-11-13
Patidar, Jay M (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetic sensor within material
C324S240000
Reexamination Certificate
active
10946107
ABSTRACT:
Techniques for detecting defects in the proximity of a hole of a laminate structure include inserting a generally cylindrical body portion into a hole such that a first coil of wire will reside in a plane substantially parallel to a first electrically conductive layer of the laminate material. A magnetic field produced by the first coil of wire will produce eddy-currents in the conductive layer in the plane of the first conductive layer, but damaged laminate materials will fail to produce similar eddy-currents. As the differences in eddy-currents between damages and undamaged laminate layers can be measured, damage to such laminate materials can be determined.
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Gifford Carl B.
Kennedy James C.
Uyehara Clyde T.
Baker & Hostetler LLP
Patidar Jay M
The Boeing Company
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