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Method and apparatus for measurement of orientation in an anisotropic medium

United States Patent

5,955,671
September 21, 1999
View the Complete Patent at the US Patent & Trademark Office
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.
Gilmore; Robert Snee (Burnt Hills, NY), Kline; Ronald Alan (Norman, OK), Deaton, Jr.; John Broddus (Niskayuna, NY)
General Electric Company (Schenectady, NY)
08/ 826,252
March 28, 1997
The U.S. Government may have rights in this invention pursuant to Contract No. DE-FC21-95MC31176 awarded by the U.S. Department of Energy.