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Title: Methods of and apparatus for levitating an eddy current probe

Abstract

An eddy current probe is supported against the force of gravity with an air earing while being urged horizontally toward the specimen being examined by a spring and displaced horizontally against the force of the spring pneumatically. The pneumatic displacement is accomplished by flowing air between a plenum chamber fixed with respect to the probe and the surface of the specimen. In this way, the surface of the specimen can be examined without making mechanical contact therewith while precisely controlling the distance at which the probe stands-off from the surface of the specimen.

Inventors:
 [1]
  1. (Kansas City, MO)
Issue Date:
Research Org.:
Kansas City Plant (KCP), Kansas City, MO (United States)
OSTI Identifier:
866580
Patent Number(s):
4742299
Application Number:
06/919,166
Assignee:
United States of America as represented by Department of Energy (Washington, DC) KCP
DOE Contract Number:  
AC04-76DP00613
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
methods; apparatus; levitating; eddy; current; probe; supported; force; gravity; air; earing; urged; horizontally; specimen; examined; spring; displaced; pneumatically; pneumatic; displacement; accomplished; flowing; plenum; chamber; fixed; respect; surface; mechanical; contact; therewith; precisely; controlling; distance; stands-off; mechanical contact; contact therewith; eddy current; current probe; plenum chamber; precisely control; displaced horizontally; /324/73/269/

Citation Formats

Stone, William J. Methods of and apparatus for levitating an eddy current probe. United States: N. p., 1988. Web.
Stone, William J. Methods of and apparatus for levitating an eddy current probe. United States.
Stone, William J. Tue . "Methods of and apparatus for levitating an eddy current probe". United States. https://www.osti.gov/servlets/purl/866580.
@article{osti_866580,
title = {Methods of and apparatus for levitating an eddy current probe},
author = {Stone, William J.},
abstractNote = {An eddy current probe is supported against the force of gravity with an air earing while being urged horizontally toward the specimen being examined by a spring and displaced horizontally against the force of the spring pneumatically. The pneumatic displacement is accomplished by flowing air between a plenum chamber fixed with respect to the probe and the surface of the specimen. In this way, the surface of the specimen can be examined without making mechanical contact therewith while precisely controlling the distance at which the probe stands-off from the surface of the specimen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {5}
}

Patent:

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