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Proceedings Paper

Examination of single-substance multiphase material distribution in a cylindrical container using acoustic wavenumber spectroscopy
Author(s): John R. Rees; Elise Anne C. Koskelo; Niall M. O'Dowd; Eric B. Flynn
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Paper Abstract

This paper explores the use of a steady-state scanning laser Doppler vibrometer (LDV) system for the identification of transition areas between solid, liquid, and gaseous substances in an enclosed container. This technique images lateral surface velocity under the excitation of a single-frequency ultrasonic tone, produced by a piezoelectric actuator. Differences in measured spatial wavenumber at discrete measurement points of a surface scan can be used to detect the boundaries between solid, liquid and gaseous regions of material. We used the LDV system to compare the relative distributions of solid wax, liquid wax, and air in a cylindrical container based on local changes in wavenumber. Through the same methodology, we were able to distinguish the transition between solid and liquid epoxy in a container. Finally, by repeatedly scanning the container during a phase-changing reaction within the container, we established that the system can be used to monitor reactions as they progress.

Paper Details

Date Published: 4 April 2017
PDF: 9 pages
Proc. SPIE 10166, Industrial and Commercial Applications of Smart Structures Technologies 2017, 1016603 (4 April 2017); doi: 10.1117/12.2257356
Show Author Affiliations
John R. Rees, Los Alamos National Lab. (United States)
Elise Anne C. Koskelo, Los Alamos National Lab. (United States)
Niall M. O'Dowd, Los Alamos National Lab. (United States)
Eric B. Flynn, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 10166:
Industrial and Commercial Applications of Smart Structures Technologies 2017
Dan J. Clingman, Editor(s)

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