Measuring and testing – Vibration – By mechanical waves
Patent
1979-10-22
1981-02-10
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
73602, 73659, G01N 2900
Patent
active
042494222
ABSTRACT:
An apparatus and method for determining the material properties characterizing a fluid contained in a cavity inside a solid comprises analyzing the resonances in the amplitude of elastic waves scattered by the cavity. Specifically, the resonance positions and their widths are used to determine the sound speed and the density of the cavity filler. The sound speed is found from the spacing between two consecutive overtones of any mode, which asymptotically becomes uniform for the higher-index overtones. The density is obtained from the width of any high order resonance and accordingly, all the information about the material composition of the filler is contained, and can be extracted, from the high-frequency asymptotic region.
REFERENCES:
patent: 3710615 (1973-01-01), Johnson et al.
patent: 3791200 (1974-02-01), Hayre
patent: 3914984 (1975-10-01), Wade
patent: 3946600 (1976-03-01), Rettig et al.
patent: 4006625 (1977-02-01), Davis
patent: 4086816 (1978-05-01), Jon et al.
patent: 4086817 (1978-05-01), Jon et al.
patent: 4117732 (1978-10-01), Brazhnikov
patent: 4140021 (1979-02-01), Nomura et al.
patent: 4144766 (1979-03-01), Wehrmeister
E. Meyer et al., "Pulsation Oscillations of Cavities in Rubber," J. Acoust. oc. Am., vol. 30, No. 12, pp. 1116-1124, Dec. 1958.
G. Gaunaurd et al., "New Method to Determine Shear Absorption using Viscoelastodynamic Resonance-Scattering Formalism, " J. Acoust. Soc. Am., vol. 64, No. 4, pp. 1211-1212, Oct. 1978.
G. Gaunaurd et al., "Deciphering Scattering Code Contained in Resonance Echoes from Fluid Filled Cavities in Solids," Science, vol. 206, pp. 61-64, Oct. 1979.
berall Herbert M.
Gaunaurd Guillermo C.
Branning A. L.
Kreitman Stephen A.
Lashmit D. A.
Sciascia R. S.
The United States of America as represented by the Secretary of
LandOfFree
Apparatus and process for determining the composition of fluid-f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and process for determining the composition of fluid-f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and process for determining the composition of fluid-f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1660445