NDLI: Sensing the properties of liquids with doubly rotated resonators

Content Provider	IEEE Xplore Digital Library
Author	Yoonkee Kim Vig, J.R. Ballato, A.
Copyright Year	1998
Description	Author affiliation: US Army Commun.-Electron. Command, Fort Monmouth, NJ, USA (Yoonkee Kim)
Abstract	Immersion of a resonator into a liquid results in changes in the resonator's frequency and impedance. These changes have been used to characterize liquid properties. Frequency can be measured with far higher accuracy than impedance or any other quantity. The goal of the project described in this paper was to investigate whether or not it is possible to measure a liquid's properties by means of frequency measurements alone. When a doubly rotated resonator (/spl theta//spl ap/35/spl deg/ and /spl phi/>0/spl deg/) is operated in a liquid, the displacement of the surface is partly out of the plane of the plate. By controlling the /spl phi/ angle, one may control the ratio of in-plane to out-of-plane displacements. The out-of-plane component of the displacement propagates a damped compressional wave into the liquid, while the in-plane component propagates a damped shear wave. The frequency changes of doubly rotated resonators have been measured in glycerol solutions of a variety of concentrations. At each concentration, the frequency change was found to increase with increasing /spl phi/ angle. A method is proposed for the determination of a fluid's density, viscosity and acoustic wave velocity.
Starting Page	660
Ending Page	666
File Size	531515
Page Count	7
File Format	PDF
ISBN	0780343735
ISSN	10756787
DOI	10.1109/FREQ.1998.717971
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-05-29
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Liquids Frequency measurement Displacement control Resonant frequency Impedance measurement Acoustic propagation Acoustic measurements Rotation measurement Viscosity Acoustic waves
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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