Measuring and testing – Vibration – By mechanical waves
Patent
1989-07-31
1991-07-30
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
G01N 2900
Patent
active
050351443
ABSTRACT:
Frequency broadband measurement of the characteristics of acoustic waves propagating in an object is disclosed. A time domain signal processing is described, based on narrow-band filtering of wide-band acoustic wave pulses and cross-corelation which permits to measure both phase and group velocities as a function of frequency.
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Arana Louis M.
National Research Council of Canada
Williams Hezron E.
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