Marginally dispersive ultrasonic waveguides
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United States of America Patent
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Nov 3, 1992
Grant Date -
N/A
app pub date -
Jul 27, 1989
filing date -
Jul 27, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus for ultrasonically measuring selected physical parameters of a test material or structure are achieved by selecting and configuring waveguides for transmitting extensional, longitudinal, shear, Rayleigh and Lamb waves into media in a marginally dispersive manner. Marginally dispersive transmission is defined by specific criteria of velocity and waveguide diameter. Methods and apparatus for acoustically isolating the waveguides to permit leakage are included, as well as a method of extension to flexural mode conversion to launch flexural waves into a medium.
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