Material inspection using eddy currents
US10775347B2 · kind B2 · utility
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2References
20Claims
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Key dates
| Filing date | Aug 9, 2016 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/902
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of inspecting a material comprising: producing at least one eddy current excitation in a material under test; sensing said at least one eddy current excitation in the material under test; wherein the method comprises using a low cross-correlation coded spread spectrum to produce said at least one eddy current excitation, and using a correlation technique to make a determination of amplitude and phase of the sensed eddy current excitation; wherein the method further comprises using the determination to make an assessment of the material under test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.