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Title: Methods and systems for monitoring a solid-liquid interface

Abstract

Methods and systems are provided for monitoring a solid-liquid interface, including providing a vessel configured to contain an at least partially melted material; detecting radiation reflected from a surface of a liquid portion of the at least partially melted material; providing sound energy to the surface; measuring a disturbance on the surface; calculating at least one frequency associated with the disturbance; and determining a thickness of the liquid portion based on the at least one frequency, wherein the thickness is calculated based on L=(2m-1)v.sub.s/4f, where f is the frequency where the disturbance has an amplitude maximum, v.sub.s is the speed of sound in the material, and m is a positive integer (1, 2, 3, . . . ).

Inventors:
 [1];  [2]
  1. Gettysburg, PA
  2. Frederick, MD
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1029275
Patent Number(s):
8,030,633
Application Number:
US patent applicaiton 12/233,989
Assignee:
BP Corporation North America Inc. (Naperville, IL)
DOE Contract Number:  
AC36-98GO10337
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 47 OTHER INSTRUMENTATION

Citation Formats

Stoddard, Nathan G, and Clark, Roger F. Methods and systems for monitoring a solid-liquid interface. United States: N. p., 2011. Web.
Stoddard, Nathan G, & Clark, Roger F. Methods and systems for monitoring a solid-liquid interface. United States.
Stoddard, Nathan G, and Clark, Roger F. Tue . "Methods and systems for monitoring a solid-liquid interface". United States. https://www.osti.gov/servlets/purl/1029275.
@article{osti_1029275,
title = {Methods and systems for monitoring a solid-liquid interface},
author = {Stoddard, Nathan G and Clark, Roger F},
abstractNote = {Methods and systems are provided for monitoring a solid-liquid interface, including providing a vessel configured to contain an at least partially melted material; detecting radiation reflected from a surface of a liquid portion of the at least partially melted material; providing sound energy to the surface; measuring a disturbance on the surface; calculating at least one frequency associated with the disturbance; and determining a thickness of the liquid portion based on the at least one frequency, wherein the thickness is calculated based on L=(2m-1)v.sub.s/4f, where f is the frequency where the disturbance has an amplitude maximum, v.sub.s is the speed of sound in the material, and m is a positive integer (1, 2, 3, . . . ).},
doi = {},
url = {https://www.osti.gov/biblio/1029275}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {10}
}

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Works referenced in this record:

Laser ultrasonic sensing of the melting and solidification of cadmium telluride
journal, May 2001


Application of pulse-echo ultrasonics to locate the solid/liquid interface during solidification and melting
journal, December 1986


Ultrasonic evaluation of semi-solid metals during processing
journal, October 2000