Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2011-06-28
2011-06-28
Larkin, Daniel S (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S030010, C073S03200R, C073S602000, C073S061790
Reexamination Certificate
active
07966882
ABSTRACT:
A method for determining a velocity and density of a fluid without requiring the transmission of ultrasound through the fluid, and a system for performing such a method. The method involves the steps of delivering, receiving and analyzing ultrasound pulses sent from a longitudinal and a shear wave transducers to a member that is in contact with a fluid. The ultrasound pulses reflecting between surfaces provide a first ultrasound pulse echo series, that is transmitted, received and processed. The shear wave ultrasound pulses are also delivered through a shear wave transducer at a predesignated angle relative to the interface of the member and the fluid and the results of this are received to obtain a second ultrasound pulse echo series. Reflection coefficients for the first and second ultrasound pulse echo series are then calculated and the density of the fluid and the velocity of sound in the fluids are extracted.
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Greenwood, Margaret Stautbert, et al., Measurement of Viscosity and Shear Wave Velocity of a Liquid or Slurry for On-Line Process Control, Ultrasonics 39 (2002) 623-630.
Battelle (Memorial Institute)
Larkin Daniel S
Maughan Derek H.
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