Measuring and testing – Vibration – By mechanical waves
Patent
1984-06-20
1986-09-02
Levy, Stewart J.
Measuring and testing
Vibration
By mechanical waves
73 32A, G01N 2900
Patent
active
046088695
ABSTRACT:
In order to identify the density of a particle, an acoustic wave is focused on the particle and the reflected wave is detected by the focusing transducer. The ratio of the Fourier transform of the transmitted wave to the received wave is an indication of density. A particle to be examined may be suspended in a low boiling point medium and a transducer may be located within the medium by melting a localized region of medium by means of temperature control liquid flowing through the transducer assembly.
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Levy Stewart J.
Raevis Robert R.
Trustees of Boston University
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