Apparatus and method for comparing corresponding acoustic resonances in liquids
Abstract
Apparatus and method for comparing corresponding acoustic resonances in liquids. The present invention permits the measurement of certain characteristics of liquids which affect the speed of sound therein. For example, a direct correlation between the octane rating of gasoline and the speed of sound in a gasoline sample has been experimentally observed. Therefore, changes in the speed of sound therein can be utilized as a sensitive parameter for determining changes in composition of a liquid sample. The present apparatus establishes interference patterns inside of a liquid without requiring the use of very thin, rigorously parallel ceramic discs, but rather uses readily available piezoelectric transducers attached to the outside surface of the usual container for the liquid and located on the same side thereof in the vicinity of one another. That is, various receptacle geometries may be employed, and the driving and receiving transducers may be located on the same side of the receptacle. The cell may also be constructed of any material that is inert to the liquid under investigation. A single-transducer embodiment, where the same transducer provides the excitation to the sample container and receives signals impressed therein, is also described.
- Inventors:
-
- Los Almos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 872213
- Patent Number(s):
- 5886262
- Assignee:
- Regents of University of California (Los Alamos, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; method; comparing; corresponding; acoustic; resonances; liquids; permits; measurement; characteristics; affect; speed; sound; therein; example; direct; correlation; octane; rating; gasoline; sample; experimentally; observed; changes; utilized; sensitive; parameter; determining; composition; liquid; establishes; interference; patterns; inside; requiring; rigorously; parallel; ceramic; discs; readily; available; piezoelectric; transducers; attached; outside; surface; container; located; vicinity; various; receptacle; geometries; employed; driving; receiving; cell; constructed; material; inert; investigation; single-transducer; embodiment; transducer; provides; excitation; receives; signals; impressed; described; liquid sample; octane rating; corresponding acoustic; acoustic resonances; acoustic resonance; interference pattern; sample container; outside surface; piezoelectric transducer; readily available; receiving transducer; direct correlation; interference patterns; piezoelectric transducers; gasoline sample; comparing corresponding; /73/
Citation Formats
Sinha, Dipen N. Apparatus and method for comparing corresponding acoustic resonances in liquids. United States: N. p., 1999.
Web.
Sinha, Dipen N. Apparatus and method for comparing corresponding acoustic resonances in liquids. United States.
Sinha, Dipen N. Fri .
"Apparatus and method for comparing corresponding acoustic resonances in liquids". United States. https://www.osti.gov/servlets/purl/872213.
@article{osti_872213,
title = {Apparatus and method for comparing corresponding acoustic resonances in liquids},
author = {Sinha, Dipen N},
abstractNote = {Apparatus and method for comparing corresponding acoustic resonances in liquids. The present invention permits the measurement of certain characteristics of liquids which affect the speed of sound therein. For example, a direct correlation between the octane rating of gasoline and the speed of sound in a gasoline sample has been experimentally observed. Therefore, changes in the speed of sound therein can be utilized as a sensitive parameter for determining changes in composition of a liquid sample. The present apparatus establishes interference patterns inside of a liquid without requiring the use of very thin, rigorously parallel ceramic discs, but rather uses readily available piezoelectric transducers attached to the outside surface of the usual container for the liquid and located on the same side thereof in the vicinity of one another. That is, various receptacle geometries may be employed, and the driving and receiving transducers may be located on the same side of the receptacle. The cell may also be constructed of any material that is inert to the liquid under investigation. A single-transducer embodiment, where the same transducer provides the excitation to the sample container and receives signals impressed therein, is also described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}