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Title: Vibration sensing method and apparatus

Abstract

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.

Inventors:
Publication Date:
OSTI Identifier:
7266867
Patent Number(s):
US 4823601; A
Application Number:
PPN: US 7-070763
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-117835
DOE Contract Number:  
AC07-76ID01570
Resource Type:
Patent
Resource Relation:
Patent File Date: 7 Jul 1987
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; MECHANICAL STRUCTURES; NONDESTRUCTIVE TESTING; LASER RADIATION; MEASURING METHODS; MECHANICAL VIBRATIONS; ELECTROMAGNETIC RADIATION; MATERIALS TESTING; RADIATIONS; TESTING; 420500* - Engineering- Materials Testing

Citation Formats

Barna, B.A. Vibration sensing method and apparatus. United States: N. p., 1989. Web.
Barna, B.A. Vibration sensing method and apparatus. United States.
Barna, B.A. Tue . "Vibration sensing method and apparatus". United States.
@article{osti_7266867,
title = {Vibration sensing method and apparatus},
author = {Barna, B.A.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {4}
}