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Title: Method and apparatus for detecting internal structures of bulk objects using acoustic imaging

Abstract

Apparatus for producing an acoustic image of an object according to the present invention may comprise an excitation source for vibrating the object to produce at least one acoustic wave therein. The acoustic wave results in the formation of at least one surface displacement on the surface of the object. A light source produces an optical object wavefront and an optical reference wavefront and directs the optical object wavefront toward the surface of the object to produce a modulated optical object wavefront. A modulator operatively associated with the optical reference wavefront modulates the optical reference wavefront in synchronization with the acoustic wave to produce a modulated optical reference wavefront. A sensing medium positioned to receive the modulated optical object wavefront and the modulated optical reference wavefront combines the modulated optical object and reference wavefronts to produce an image related to the surface displacement on the surface of the object. A detector detects the image related to the surface displacement produced by the sensing medium. A processing system operatively associated with the detector constructs an acoustic image of interior features of the object based on the phase and amplitude of the surface displacement on the surface of the object.

Inventors:
 [1];  [1]
  1. Idaho Falls, ID
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
OSTI Identifier:
874495
Patent Number(s):
6401540
Assignee:
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; detecting; internal; structures; bulk; acoustic; imaging; producing; image; excitation; source; vibrating; produce; wave; results; formation; surface; displacement; light; produces; optical; wavefront; reference; directs; modulated; modulator; operatively; associated; modulates; synchronization; sensing; medium; positioned; receive; combines; wavefronts; related; detector; detects; produced; processing; constructs; interior; features; based; phase; amplitude; light source; acoustic wave; operatively associated; excitation source; /73/

Citation Formats

Deason, Vance A, and Telschow, Kenneth L. Method and apparatus for detecting internal structures of bulk objects using acoustic imaging. United States: N. p., 2002. Web.
Deason, Vance A, & Telschow, Kenneth L. Method and apparatus for detecting internal structures of bulk objects using acoustic imaging. United States.
Deason, Vance A, and Telschow, Kenneth L. Tue . "Method and apparatus for detecting internal structures of bulk objects using acoustic imaging". United States. https://www.osti.gov/servlets/purl/874495.
@article{osti_874495,
title = {Method and apparatus for detecting internal structures of bulk objects using acoustic imaging},
author = {Deason, Vance A and Telschow, Kenneth L},
abstractNote = {Apparatus for producing an acoustic image of an object according to the present invention may comprise an excitation source for vibrating the object to produce at least one acoustic wave therein. The acoustic wave results in the formation of at least one surface displacement on the surface of the object. A light source produces an optical object wavefront and an optical reference wavefront and directs the optical object wavefront toward the surface of the object to produce a modulated optical object wavefront. A modulator operatively associated with the optical reference wavefront modulates the optical reference wavefront in synchronization with the acoustic wave to produce a modulated optical reference wavefront. A sensing medium positioned to receive the modulated optical object wavefront and the modulated optical reference wavefront combines the modulated optical object and reference wavefronts to produce an image related to the surface displacement on the surface of the object. A detector detects the image related to the surface displacement produced by the sensing medium. A processing system operatively associated with the detector constructs an acoustic image of interior features of the object based on the phase and amplitude of the surface displacement on the surface of the object.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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