High resolution inductive sensor arrays for material and defect characterization of welds
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United States of America Patent
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-
Feb 7, 2006
Grant Date -
Dec 2, 2004
app pub date -
Feb 27, 2004
filing date -
Jun 26, 2000
priority date (Note) -
In Force
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Abstract
A sensor that characterizes welds in materials. The sensor includes a meandering drive winding with at least three extended portions and at least one sensing element placed between an adjacent pair of extended portions. A time varying electric current is passed through the extended portions to form a magnetic field. The sensor is placed in proximity to the test material and translated over the weld region. An electrical property of the weld region is measured for each sensing element location. The weld quality is determined using a feature of the electrical property measurement and location.
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