Weld characterization using eddy current sensors and arrays
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United States of America Patent
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Issued Date -
Jan 27, 2005
app pub date -
Jun 9, 2004
filing date -
Jun 9, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Eddy current sensors and sensor arrays are used to characterize welds and the welding process schedule or parameters. A sensor or sensor array is placed in proximity to the test material, such as a lap joint or a butt weld, and translated over the weld region. Effective properties associated with the test material and sensor, such as an electrical conductivity or lift-off, are obtained for the weld region and the base material at a distant location from the weld region. The effective properties or features obtained from the effective property variation with position across the weld are used to assess the welding process parameters.
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