Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells
Abstract
Method and apparatus for determining diameter and wall thickness of hollow microspheres or shells wherein terminal velocities of shells traveling in fluid-filled conduits of differing diameters are measured. A wall-effect factor is determined as a ratio of the terminal velocities, and shell outside diameter may then be ascertained as a predetermined empirical function of wall-effect factor. For shells of known outside diameter, wall thickness may then be ascertained as a predetermined empirical function of terminal velocity in either conduit.
- Inventors:
- Issue Date:
- Research Org.:
- KMS Fusion Inc., Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 864089
- Patent Number(s):
- 4308750
- Application Number:
- 06/154638
- Assignee:
- The United States of America as represented by the United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
- DOE Contract Number:
- AC08-78DP40030
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1980 May 30
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; apparatus; determining; diameter; wall; thickness; minute; hollow; spherical; shells; microspheres; terminal; velocities; traveling; fluid-filled; conduits; differing; diameters; measured; wall-effect; factor; determined; ratio; shell; outside; ascertained; predetermined; empirical; function; velocity; conduit; spherical shell; spherical shells; outside diameter; hollow microspheres; wall thickness; hollow spherical; determining diameter; /73/250/
Citation Formats
Steinman, David A. Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells. United States: N. p., 1982.
Web.
Steinman, David A. Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells. United States.
Steinman, David A. Fri .
"Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells". United States. https://www.osti.gov/servlets/purl/864089.
@article{osti_864089,
title = {Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells},
author = {Steinman, David A.},
abstractNote = {Method and apparatus for determining diameter and wall thickness of hollow microspheres or shells wherein terminal velocities of shells traveling in fluid-filled conduits of differing diameters are measured. A wall-effect factor is determined as a ratio of the terminal velocities, and shell outside diameter may then be ascertained as a predetermined empirical function of wall-effect factor. For shells of known outside diameter, wall thickness may then be ascertained as a predetermined empirical function of terminal velocity in either conduit.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}
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Works referenced in this record:
Wall Effect in Falling Ball Method for Viscosity
journal, November 1933
- Francis, Alfred W.
- Physics, Vol. 4, Issue 11