Vibration sensing method and apparatus

Patent · 07 July 1987

OSTI ID:6747366

Barna, B A

A method and apparatus for nondestructive evaluation of a structure is 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.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• Assignee: INEL; ERA-14-001462; EDB-88-185917
• Patent Number(s): PATENTS-US-A6070763
• OSTI ID: 6747366
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
ACOUSTIC TESTING
DESIGN
EQUIPMENT
GAS LASERS
HELIUM-NEON LASERS
INVENTIONS
LASERS
MATERIALS TESTING
MECHANICAL VIBRATIONS
NONDESTRUCTIVE TESTING
OPTICAL EQUIPMENT
TESTING