Measuring and testing – Vibration – By mechanical waves
Patent
1979-07-30
1982-01-26
Gill, James J.
Measuring and testing
Vibration
By mechanical waves
73 23, 73599, 310313R, G01N 2900
Patent
active
043122280
ABSTRACT:
The invention is in the monitoring of physical parameters relating to various fluids and polymers by contacting same with the surface of a piezoelectric material unit through which is passing a surface acoustic wave, and measuring the alteration of that wave as an indication of these parameters. The invention is also in apparati for monitoring certain of said parameters.
REFERENCES:
patent: 3164004 (1965-01-01), King
patent: 3557605 (1971-01-01), Lannean et al.
patent: 4055072 (1977-10-01), Fletcher
"Using Quartz Crystals as Sorption Detectors" by King from Research/Development, 20 (4 & 5), at 28 (1969).
"Surface Acoustic Wave Film Thickness Monitor" by Kovnovich et a., from Rev. of Sci. Instr., 48 (7) at 920 (1977).
"Non-Destructive Testing of Thin Films by Harmonic Generation of Dispersive Rayleigh Waves", by Lean et al. App. Physics Lett., 19 (9) at 356 (1971).
"Acoustic Surface Wave Attenuation. . ." by Jain from Acoustic Surface Wave and Acousto-optic Devices, Optonsonic Press, New York, 63 (1971).
"Attenuation of Microwave Acoustic Surface Waves Due to Gas Loading"by Slobodnik from J. of Applied Physics, 43 (6) at 2565 (1972).
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