Inspection of non-planar parts using multifrequency eddy current with phase analysis
US7518359B2 · kind B2 · utility
5Cited by
17References
12Claims
0Family size
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Key dates
| Filing date | Jan 12, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Aug 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/9086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-planar part has a non-planar surface such as an edge, and may contain an anomaly such as a crack. The non-planar part is inspected using an eddy current technique. The method includes providing the non-planar part having the non-planar surface thereon, driving an eddy current probe at two or more frequencies, measuring an eddy current response signal of the non-planar part at each frequency, and performing a multifrequency phase analysis on the eddy current response signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.