Miniaturized contactless sonic IR device for remote non-destructive inspection
US6399948B1 · kind B1 · utility
43Cited by
26References
20Claims
0Family size
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Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Oct 28, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal imaging system for detecting cracks and defects in a component. An electromagnetic acoustic transducer (EMAT) is coupled to the component, and introduces pulsed sound signals therein. The sound signals cause the defects to heat up. The IR radiation from the heated pulses is detected by a thermal camera. The amplitude of the pulsed signals are substantially constant, and the frequency of the pulsed signal can be changed within each pulse. A control unit is employed to provide timing and control for the operation of the EMAT and the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.