Vibration sensing method and apparatus
Patent
·
OSTI ID:7266867
A method and apparatus for nondestructive evaluation of a structure are disclosed. Resonant audio frequency vibrations are excited in the structure to be evaluated and the vibrations are measured and characterized to obtain information about the structure. The vibrations are measured and characterized by reflecting a laser beam from the vibrating structure and directing a substantial portion of the reflected beam back into the laser device used to produce the beam which device is capable of producing an electric signal containing information about the vibration. 4 figs.
- DOE Contract Number:
- AC07-76ID01570
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- A; US 4823601
- Application Number:
- PPN: US 7-070763
- OSTI ID:
- 7266867
- Country of Publication:
- United States
- Language:
- English
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