Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells
Patent
·
OSTI ID:6891284
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.
- DOE Contract Number:
- AC08-78DP40030
- Assignee:
- Dept. of Energy
- OSTI ID:
- 6891284
- Country of Publication:
- United States
- Language:
- English
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