Wall thickness measuring method and apparatus
Abstract
An apparatus for measuring the wall thickness of a nonmagnetic article having a housing supporting a magnet and a contiguous supporting surface. The tubular article and the housing are releasably secured to the supporting surface and a support member of an optical comparator, respectively. To determine the wall thickness of the article at a selected point, a magnetically responsive ball is positioned within the tubular article over said point and retained therein by means of a magnetic field produced by the magnet. Thereafter, an optical comparator is employed to project a magnified image of the ball on a screen and the wall thickness at the selected point is calculated by using a ball surface measurement taken with the comparator in conjunction with a previously determined base line measurement.
- Inventors:
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 6771069
- Patent Number(s):
- 6105154
- Assignee:
- TIC; EDB-88-179308
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 42 ENGINEERING; THICKNESS GAGES; DESIGN; INVENTIONS; MEASURING INSTRUMENTS; OPTICAL EQUIPMENT; EQUIPMENT; 440300* - Miscellaneous Instruments- (-1989); 420200 - Engineering- Facilities, Equipment, & Techniques
Citation Formats
Salzer, L J, and Bergren, D A. Wall thickness measuring method and apparatus. United States: N. p., 1987.
Web.
Salzer, L J, & Bergren, D A. Wall thickness measuring method and apparatus. United States.
Salzer, L J, and Bergren, D A. Tue .
"Wall thickness measuring method and apparatus". United States.
@article{osti_6771069,
title = {Wall thickness measuring method and apparatus},
author = {Salzer, L J and Bergren, D A},
abstractNote = {An apparatus for measuring the wall thickness of a nonmagnetic article having a housing supporting a magnet and a contiguous supporting surface. The tubular article and the housing are releasably secured to the supporting surface and a support member of an optical comparator, respectively. To determine the wall thickness of the article at a selected point, a magnetically responsive ball is positioned within the tubular article over said point and retained therein by means of a magnetic field produced by the magnet. Thereafter, an optical comparator is employed to project a magnified image of the ball on a screen and the wall thickness at the selected point is calculated by using a ball surface measurement taken with the comparator in conjunction with a previously determined base line measurement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 06 00:00:00 EDT 1987},
month = {Tue Oct 06 00:00:00 EDT 1987}
}