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Title: 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 Lab. (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 = {1987},
month = {10}
}