Ultrasonic particulate identification

Details Ultrasonic particulate identification Ultrasonic particulate identification

1980-05-21

1982-07-20

Kreitman, Stephen A.

Measuring and testing

Gas content of a liquid or a solid

By vibration

73 61R, G01N 2902

Patent

active

043399444

ABSTRACT:
A method of identifying discontinuities in a flow by transforming an ultrasonic pulse reflected from an unknown discontinuity into a frequency spectrum and comparing that spectrum with the spectra of known discontinuities.

REFERENCES:
patent: 3553636 (1971-01-01), Baird
patent: 4217909 (1980-08-01), Papadofrangakis et al.
Abts et al., "Computerized Discrimination of Microemboli in Extracorporreal Circuits", The American Journal of Surgery, pp. 535-538, Apr. 1978.
Hickling, "Analysis of Echos From a Solid Elastic Sphere in Water", Journal of the Acoustical Society of America, vol. 34, No. 10, pp. 1582-1592, Oct. 1962.
Jacobson et al., "Ultrasonic Detection of Bloodstream Emboli", Ocean '73 IEEE International Conference on Engineering in Ocean Envir., pp. 141-147, Sep. 1973.
Lubbers et al., "An Ultrasonic Detector for Microgasemboli in a Bloodflow Line", Ultrasound in Med. and Biol., vol. 2, No. 4, pp. 301-310, 1977.

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