dc.contributor.author | Bjørndal, Erlend | eng |
dc.contributor.author | Frøysa, Kjell-Eivind | eng |
dc.date.accessioned | 2008-10-06T13:44:58Z | |
dc.date.available | 2008-10-06T13:44:58Z | |
dc.date.issued | 2008-08-08 | eng |
dc.Published | Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on 2008 55 (8): 1781-1793 | en |
dc.identifier.issn | 0885-3010 | en_US |
dc.identifier.uri | https://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_US |
dc.language.iso | eng | eng |
dc.publisher | IEEE | en_US |
dc.subject | Acoustic measurement | eng |
dc.subject | Acoustic transducers | eng |
dc.subject | Acoustic wave reflection | eng |
dc.subject | Buffer layers | eng |
dc.subject | Echo | eng |
dc.subject | Acoustic methods | eng |
dc.subject | Acoustic transducers | eng |
dc.subject | Buffer materials | eng |
dc.subject | Buffer rod based measurement cell | eng |
dc.subject | Echo signals | eng |
dc.subject | Pressure reflection coefficient | eng |
dc.subject | Symmetrical arrangement | eng |
dc.title | Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.identifier.doi | https://doi.org/10.1109/tuffc.2008.862 | |
dc.subject.nsi | VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 | nob |