Photo-acoustic tomography defect testing system and method
US12146861B2 · kind B2 · utility
1Cited by
1References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 9, 2021 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Apr 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0289
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A part defect testing system includes a hammer beam system that provides laser light having a first wavelength. A read-out beam system provides laser light having a second wavelength. A control system is used to direct the generated hammer beam laser light toward a first position on a part to provide an acoustic hammer pulse that induces surface movement of the part. An areal camera is arranged to produce an interferogram derived from reading surface movement of the part using the read-out beam directed to a second position on the part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.