Investigating Ultrasonic Diffraction Grating Spectroscopy and Reflection Techniques for Characterizing Slurry Properties

Greenwood, Margaret S. ; Bond, Leonard J. ; Burgess, Lloyd ; Brodsky, Anatol

Pacific Northwest National Laboratory (U.S.)

关键词: Particle Size;    Reflection;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;    Radioactive Wastes;    Shear;   

DOI  :  10.2172/834771
RP-ID  :  EMSP-81889-2002
RP-ID  :  FG07-01ER63297
RP-ID  :  834771

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objectives of the project are to investigate the use of (1) ultrasonic diffraction grating spectroscopy (UDGS) for measuring the particle size of a slurry and (2) shear wave reflection techniques to measure the viscosity of a slurry. For the first topic, the basic principle is to extend the methods that have been successful in optics, called grating light reflection spectroscopy (GLRS), to ultrasonics. At the University of Washington, researchers are using GLRS to measure nanometer-sized particles and particles up to two microns in size in slurries. The goal of the research with ultrasonics is to measure particles in the range of a few microns to about 100 microns, which is the range of particle sizes for slurries in the radioactive waste tanks at U.S. Department of Energy (DOE) sites. The collaborators at the University of Washington will provide the theoretical algorithm that extracts particle size information from the experimental measurements of the critical frequency a nd amplitude. For the second topic, the research will use multiple reflections of ultrasonic shear waves at the interface between a solid and a liquid or slurry. Such reflections are known to provide information about the viscosity, but the goal here is to develop a method to make on-line measurements. This will include using the self calibrating method, developed by Greenwood, for which a patent application has been submitted. In both phases of the research, collaboration with partners at the University of Washington will provide the theoretical basis for analysis of the experimental data.