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Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell

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dc.contributor.author Bjørndal, Erlend
dc.contributor.author Frøysa, Kjell-Eivind
dc.date.accessioned 2008-10-06T13:44:58Z
dc.date.available 2008-10-06T13:44:58Z
dc.date.issued 2008-08-08
dc.identifier.citation Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on 2008 55 (8): 1781-1793 en
dc.identifier.issn 0885-3010
dc.identifier.uri http://dx.doi.org/10.1109/TUFFC.2008.862
dc.identifier.uri http://hdl.handle.net/1956/2781
dc.description.abstract The known acoustic methods for obtaining the pressure reflection coefficient from a buffer rod based measurement cell are presented, along with 2 new generic approaches for measuring the pressure reflection coefficient using 2 buffer rods enclosing the liquid to be characterized in a symmetrical arrangement. An acoustic transducer is connected to each of the buffer rods. The generic approaches are divided into a relative amplitude approach and a mixed amplitude approach. For the relative amplitude approach, families of 4, 5, or 6 echo signals can be used to obtain the pressure reflection coefficient. The mixed amplitude approach uses specific information about the transducers and/or the electronics sensitivities in receive mode to obtain the pressure reflection coefficient using families of 3, 4, 5, or 6 echo signals. Some of the new methods from the relative amplitude approach imply a reduced uncertainty relative to the previously known ABC method. The effect of the liquid attenuation, digitizer bit resolution, and the signal-to-noise ratio on the uncertainty characteristics of the pressure reflection coefficient are discussed, along with a discussion of the suitability of the various methods for different buffer materials. en
dc.language.iso eng en
dc.publisher IEEE en
dc.subject Acoustic measurement en
dc.subject Acoustic transducers en
dc.subject Acoustic wave reflection en
dc.subject Buffer layers en
dc.subject Echo en
dc.subject Acoustic methods en
dc.subject Acoustic transducers en
dc.subject Buffer materials en
dc.subject Buffer rod based measurement cell en
dc.subject Echo signals en
dc.subject Pressure reflection coefficient en
dc.subject Symmetrical arrangement en
dc.title Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell en
dc.type Journal article en
dc.type Peer reviewed en
dc.subject.nsi VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 no


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