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Title: Method and apparatus for assessing material properties of sheet-like materials

Abstract

Apparatus for producing an indication of a material property of a sheet-like material according to the present invention may comprise an excitation source for vibrating the sheet-like material to produce at least one traveling wave therein. A light source configured to produce an object wavefront and a reference wavefront directs the object wavefront toward the sheet-like material to produce a modulated object wavefront. A modulator operatively associated with the reference wavefront modulates the reference wavefront in synchronization with the traveling wave on the sheet-like material to produce a modulated reference wavefront. A sensing medium positioned to receive the modulated object wavefront and the modulated reference wavefront produces an image of the traveling wave in the sheet-like material, the image of the anti-symmetric traveling wave being related to a displacement amplitude of the anti-symmetric traveling wave over a two-dimensional area of the vibrating sheet-like material. A detector detects the image of the traveling wave in the sheet-like material.

Inventors:
 [1];  [1]
  1. Idaho Falls, ID
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
OSTI Identifier:
874904
Patent Number(s):
6486962
Assignee:
Bechtel Bwxt Idaho, LLC (Idaho Falls, ID)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; assessing; material; properties; sheet-like; materials; producing; indication; property; excitation; source; vibrating; produce; traveling; wave; light; configured; wavefront; reference; directs; modulated; modulator; operatively; associated; modulates; synchronization; sensing; medium; positioned; receive; produces; image; anti-symmetric; related; displacement; amplitude; two-dimensional; detector; detects; light source; operatively associated; excitation source; /356/

Citation Formats

Telschow, Kenneth L, and Deason, Vance A. Method and apparatus for assessing material properties of sheet-like materials. United States: N. p., 2002. Web.
Telschow, Kenneth L, & Deason, Vance A. Method and apparatus for assessing material properties of sheet-like materials. United States.
Telschow, Kenneth L, and Deason, Vance A. Tue . "Method and apparatus for assessing material properties of sheet-like materials". United States. https://www.osti.gov/servlets/purl/874904.
@article{osti_874904,
title = {Method and apparatus for assessing material properties of sheet-like materials},
author = {Telschow, Kenneth L and Deason, Vance A},
abstractNote = {Apparatus for producing an indication of a material property of a sheet-like material according to the present invention may comprise an excitation source for vibrating the sheet-like material to produce at least one traveling wave therein. A light source configured to produce an object wavefront and a reference wavefront directs the object wavefront toward the sheet-like material to produce a modulated object wavefront. A modulator operatively associated with the reference wavefront modulates the reference wavefront in synchronization with the traveling wave on the sheet-like material to produce a modulated reference wavefront. A sensing medium positioned to receive the modulated object wavefront and the modulated reference wavefront produces an image of the traveling wave in the sheet-like material, the image of the anti-symmetric traveling wave being related to a displacement amplitude of the anti-symmetric traveling wave over a two-dimensional area of the vibrating sheet-like material. A detector detects the image of the traveling wave in the sheet-like material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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