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Title: Method and apparatus for measurement of orientation in an anisotropic medium

Abstract

A method and apparatus are provided for simultaneously measuring the anisotropic orientation and the thickness of an article. The apparatus comprises a transducer assembly which propagates longitudinal and transverse waves through the article and which receives reflections of the waves. A processor is provided to measure respective transit times of the longitudinal and shear waves propagated through the article and to calculate respective predicted transit times of the longitudinal and shear waves based on an estimated thickness, an estimated anisotropic orientation, and an elasticity of the article. The processor adjusts the estimated thickness and the estimated anisotropic orientation to reduce the difference between the measured transit times and the respective predicted transit times of the longitudinal and shear waves.

Inventors:
 [1];  [2];  [3]
  1. (Burnt Hills, NY)
  2. (Norman, OK)
  3. (Niskayuna, NY)
Issue Date:
Research Org.:
General Electric Company (Schenectady, NY)
OSTI Identifier:
872528
Patent Number(s):
5955671
Assignee:
General Electric Company (Schenectady, NY) NETL
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; measurement; orientation; anisotropic; medium; provided; simultaneously; measuring; thickness; article; comprises; transducer; assembly; propagates; longitudinal; transverse; waves; receives; reflections; processor; measure; respective; transit; times; shear; propagated; calculate; predicted; based; estimated; elasticity; adjusts; reduce; difference; measured; simultaneously measuring; transverse waves; shear waves; transit time; shear wave; apparatus comprises; transducer assembly; transit times; apparatus comprise; waves propagated; /73/

Citation Formats

Gilmore, Robert Snee, Kline, Ronald Alan, and Deaton, Jr., John Broddus. Method and apparatus for measurement of orientation in an anisotropic medium. United States: N. p., 1999. Web.
Gilmore, Robert Snee, Kline, Ronald Alan, & Deaton, Jr., John Broddus. Method and apparatus for measurement of orientation in an anisotropic medium. United States.
Gilmore, Robert Snee, Kline, Ronald Alan, and Deaton, Jr., John Broddus. Fri . "Method and apparatus for measurement of orientation in an anisotropic medium". United States. https://www.osti.gov/servlets/purl/872528.
@article{osti_872528,
title = {Method and apparatus for measurement of orientation in an anisotropic medium},
author = {Gilmore, Robert Snee and Kline, Ronald Alan and Deaton, Jr., John Broddus},
abstractNote = {A method and apparatus are provided for simultaneously measuring the anisotropic orientation and the thickness of an article. The apparatus comprises a transducer assembly which propagates longitudinal and transverse waves through the article and which receives reflections of the waves. A processor is provided to measure respective transit times of the longitudinal and shear waves propagated through the article and to calculate respective predicted transit times of the longitudinal and shear waves based on an estimated thickness, an estimated anisotropic orientation, and an elasticity of the article. The processor adjusts the estimated thickness and the estimated anisotropic orientation to reduce the difference between the measured transit times and the respective predicted transit times of the longitudinal and shear waves.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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