Ultrasonic Diffraction Grating Spectroscopy and Characterization of Fluids and Slurries.

Journal Article · Thu Apr 01 00:00:00 EST 2004 · Ultrasonics

DOI:https://doi.org/10.1016/j.ultras.2004.01.030· OSTI ID:15011660

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

The ultrasonic diffraction grating is formed by machining triangular grooves, 300 microns apart, on a stainless steel surface. The grating surface is in contact with the liquid or slurry. The ultrasonic beam, traveling in the solid, strikes the back of the grating and produces a transmitted m = 1 beam in the liquid. The angle of this beam in the liquid increases with decreasing frequency and the critical frequency FCR occurs when the angle is 90{sup o}. At frequencies below FCR, this m = 1 wave does not exist and its energy is shared with other types of waves. The signal of the reflected m = 0 wave is observed and an increase is observed at FCR. This information yields the velocity of sound in the liquid and particle size.

• Research Organization: Pacific Northwest National Lab., Richland, WA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 15011660
• Report Number(s): PNNL-SA-41784; KP1301020; TRN: US200507%%438
• Journal Information: Ultrasonics, Vol. 42, Issue 1-9; Other Information: PBD: 1 Apr 2004
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRITICAL FREQUENCY
DIFFRACTION GRATINGS
MACHINING
PARTICLE SIZE
SLURRIES
SPECTROSCOPY
STAINLESS STEELS
ULTRASONIC WAVES
VELOCITY
VELOCITY OF SOUND
DIFFRACTION GRATING
FLUID CHARACTERIZATION
PROCESS CONTROL