Acoustic dispersion
In
frequencies as it passes through a material. The phase velocity of the sound wave is viewed as a function of frequency. Hence, separation of component frequencies is measured by the rate of change in phase velocities as the radiated waves pass through a given medium.[1][2]
Broadband transmission method
A widely used technique for determining acoustic dispersion is a broadband transmission method. This technique was originally introduced in 1978 and has been employed to study the dispersion properties of
Kramers–Kronig relation for acoustic waves.[2]
Application of this method requires the measurements of a reference velocity to obtain values for the acoustic dispersion. This is accomplished by determining (usually) the speed of the sound in water, the thickness of the specimen, and the phase spectrum of each of the two transmitted ultrasound pulses.[2]
Dispersive attenuation
See also
References
- ^ "Acoustic dispersion". McGraw-Hill Dictionary of Scientific and Technical Terms, 6th edition. 2010 [2003]. Retrieved 2010-02-11.
- ^ PMID 10687689. Archived from the original(PDF) on 2011-05-16. Retrieved 2009-02-11.
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