Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1991-03-26
1991-12-24
Grimley, A. T.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73597, 73599, 118689, 355246, G01N 2900
Patent
active
050741497
ABSTRACT:
A method for the situ measuring of a sample of a porous material having a gaseous fluid and fine granular material located within its pores and, in particular, for determining the concentration of the fine granular material within the sample. The method includes the steps of generating a first acoustic wave signal of known amplitude and phase velocity, directing the first acoustic wave signal through the sample, receiving a second acoustic wave signal representing the first acoustic wave having passed through the sample, and determining the concentration of the fine granular material in the sample from the changes between the first acoustic wave signal and the second acoustic wave signal.
REFERENCES:
patent: 4313343 (1982-02-01), Kobayashi et al.
patent: 4346985 (1981-08-01), Watson et al.
patent: 4431300 (1984-02-01), Snelling
patent: 4447145 (1984-05-01), Snelling et al.
patent: 4804996 (1989-02-01), Snelling
Biot, M. A., Theory of Propagation of Elastic Waves in a Fluid-Saturated Porous Solid, The Journal of the Acoustical Society of America, Mar. 1956; 28(2): 179-191.
Berryman, J. G., Confirmation of Biot's Theory, Applications Physics Letters, 15 Aug. 1980; 37(4): 382-384.
Attenborough, K., Acoustical Characteristics of Rigid Fibrous Absorbents and Granular Materials, The Journal of the Acoustical Society of America, Mar. 1983; 73(3): 85-799.
Attenborough, K., On the Acoustic Slow Wave in Air-Filled Granular Media, The Journal of the Acoustical Society of America, Jan. 1987; 81(1); 93-102.
Nagy, P. B., Adler, L., Slow Wave Propagation in Air-Filled Porous Materials and Natural Rocks, Applied Physics Letters, 18 Jun. 1990; 56(25); 2504-2506.
Abend Serge
Grimley A. T.
Royer William J.
Xerox Corporation
LandOfFree
Acoustic wave measurement of the properties of porous materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic wave measurement of the properties of porous materials , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic wave measurement of the properties of porous materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-37284