Measuring and testing – Vibration – By mechanical waves
Patent
1995-09-01
1998-09-08
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73643, 73602, 73159, G01H 500
Patent
active
058047271
ABSTRACT:
A method is described for determining and evaluating physical characteristics of a material. In particular, the present invention provides for determining and evaluating the anisotropic characteristics of materials, especially those resulting from such manufacturing processes as rolling, forming, extruding, drawing, forging, etc. In operation, a complex ultrasonic wave is created in the material of interest by any method. The wave form may be any combination of wave types and modes and is not limited to fundamental plate modes. The velocity of propagation of selected components which make up the complex ultrasonic wave are measured and evaluated to determine the physical characteristics of the material including, texture, strain/stress, grain size, crystal structure, etc.
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Lu Wei-yang
Min Shermann
Evans Timothy
Moller Richard A.
Olsen Kurt
Sandia Corporation
Williams Hezron E.
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