Laser-ultrasonic testing system
US6813951B2 · kind B2 · utility
9Cited by
10References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Jul 3, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0422
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for ultrasonic testing of objects, ultrasound is generated inside or at the surface of the object. The surface of the object is illuminated with a beam from a long-pulse laser oscillator, typically in the range 1 &mgr;s to a few 100 &mgr;s, that is substantially free of intensity fluctuations. The light from the incident beam that is scattered or reflected by the surface of the object is collected and demodulated to obtain a signal representative of the ultrasonic motion. The method allows for the use of a compact and efficient arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.