Vibration sensing method and apparatus

Patent · Tue Apr 25 00:00:00 EDT 1989

OSTI ID:866924

Barna, Basil A ^[1]

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1. Idaho Falls, ID

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.

• Research Organization: EG & G Idaho Inc
• DOE Contract Number: AC07-76ID01570
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4823601
• Application Number: 07/070,763
• OSTI ID: 866924
• Country of Publication: United States
• Language: English

Related Subjects

vibration
sensing
method
apparatus
nondestructive
evaluation
structure
disclosed
resonant
audio
frequency
vibrations
excited
evaluated
measured
characterized
obtain
information
reflecting
laser
beam
vibrating
directing
substantial
portion
reflected
device
produce
capable
producing
electric
signal
containing
laser device
nondestructive evaluation
electric signal
substantial portion
laser beam
reflected beam
obtain information
sensing method
vibration sensing
audio frequency
containing information
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