Measuring and testing – Vibration – By mechanical waves
Patent
1977-10-06
1979-06-12
Queisser, Richard C.
Measuring and testing
Vibration
By mechanical waves
128660, 340 5MP, G01N 2904
Patent
active
041576659
ABSTRACT:
A device for forming acoustical images comprises an ultrasonic source, a linear array of first receiving transducers for receiving the echoes from a target illuminated by a source. The signals from the linear array of first receiving transducers are processed by a system comprising an oscillator at a frequency higher than that of the source, and, for each said receiving transducers, a mixer, a filter for separating the components of the beating frequency and a transmitting transducer.
REFERENCES:
patent: 3778756 (1973-12-01), Houston et al.
patent: 3895525 (1975-07-01), Eichelberger et al.
patent: 3918297 (1975-11-01), Rocha
Bridoux Edouard
Bruneel Christian D.
Nongaillard Bertrand
Torguet Roger J.
Agence Nationale de Valorisation de la Recherche (ANVAR)
Beauchamp John P.
Queisser Richard C.
Rosen Daniel M.
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