Measurement of the Particle Size of a Slurry Using Ultrasonic Diffraction Grating Spectroscopy
The objective of this work is to measure micron-sized particles using ultrasonics, which is advantageous for optically opaque systems. The ultrasonic diffraction grating is formed by machining parallel triangular-shaped grooves, spaced 200 microns apart, on the flat surface of a stainless steel half-cylinder. The grating is placed in contact with the slurry. Send and receive transducers are placed on the outside circular part of the half-cylinder at equal angles with the normal to the flat surface. Ultrasound from the send transducer travels through the stainless steel and strikes the back of the diffraction grating, where it is reflected to the receive transducer. The grating produces anomalies in the signal of the receive transducer, compared with data obtained using a flat surface on the half-cylinder. The nature of the signal anomaly will be discussed. The data for the measurement of particle size and theoretical models will be presented.
- Research Organization:
- Pacific Northwest National Lab., Richland, WA; University of Washington (US)
- Sponsoring Organization:
- USDOE Office of Science (SC) (US)
- OSTI ID:
- 826152
- Resource Relation:
- Conference: 226th American Chemical Society Meeting, New York, NY (US), 09/07/2003--09/11/2003; Other Information: PBD: 10 Sep 2003
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observing Effects of Particle Size for a Slurry Using Ultrasonic Diffraction Grating Spectroscopy
Ultrasonic Diffraction Grating Spectroscopy and the Measurement of Particle Size