G - Physics – 01 – R
Patent
G - Physics
01
R
324/36
G01R 23/02 (2006.01) G01H 13/00 (2006.01) G01N 29/036 (2006.01) G01N 29/12 (2006.01)
Patent
CA 1103311
ABSTRACT OF THE DISCLOSURE A device for measuring acoustic properties and their changes in a sample of liquid, gas, plasma or solid. A variable frequency source is applied to the sample by means of a transducer to produce sound waves within the sample. The application of the variable frequency source to the sample is periodically interrupted for a short duration. Means are connected to the transducer for receiving the resulting acoustic signals during the interruptions for pro- ducing a control signal indicative of a difference in the frequency of the output of the bariable frequency source and the frequency of a mechanical resonant peak in the sample. The control signal is applied to the variable frequency source to maintain its output frequency at the frequency of the mechanical resonant peak. The change in frequency of the variable frequency source is indicative of the shift in frequency of the mechanical resonant peak and the amplitude of the acoustic signals is indicative of the attenuation of the acoustic signals in the sample.
312308
National Aeronautics And Space Administration
Swabey Ogilvy Renault
LandOfFree
Pseudo continuous wave instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pseudo continuous wave instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pseudo continuous wave instrument will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-130040