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Title: Method of simulating spherical voids for use as a radiographic standard

Abstract

A method of simulating small spherical voids in metal is provided. The method entails drilling or etching a hemispherical depression of the desired diameter in each of two sections of metal, the sections being flat plates or different diameter cylinders. A carbon bead is placed in one of the hemispherical voids and is used as a guide to align the second hemispherical void with that in the other plate. The plates are then bonded together with epoxy, tape or similar material and the two aligned hemispheres form a sphere within the material; thus a void of a known size has been created. This type of void can be used to simulate a pore in the development of radiographic techniques of actual voids (porosity) in welds and serve as a radiographic standard.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
862849
Patent Number(s):
4028545
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G12 - INSTRUMENT DETAILS G12B - CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; simulating; spherical; voids; radiographic; standard; metal; provided; entails; drilling; etching; hemispherical; depression; desired; diameter; sections; flat; plates; cylinders; carbon; bead; placed; guide; align; void; plate; bonded; epoxy; tape; similar; material; aligned; hemispheres; form; sphere; size; created; type; simulate; pore; techniques; porosity; welds; serve; method entails; similar material; flat plate; desired diameter; spherical voids; flat plates; /250/378/

Citation Formats

Foster, Billy E. Method of simulating spherical voids for use as a radiographic standard. United States: N. p., 1977. Web.
Foster, Billy E. Method of simulating spherical voids for use as a radiographic standard. United States.
Foster, Billy E. Sat . "Method of simulating spherical voids for use as a radiographic standard". United States. https://www.osti.gov/servlets/purl/862849.
@article{osti_862849,
title = {Method of simulating spherical voids for use as a radiographic standard},
author = {Foster, Billy E},
abstractNote = {A method of simulating small spherical voids in metal is provided. The method entails drilling or etching a hemispherical depression of the desired diameter in each of two sections of metal, the sections being flat plates or different diameter cylinders. A carbon bead is placed in one of the hemispherical voids and is used as a guide to align the second hemispherical void with that in the other plate. The plates are then bonded together with epoxy, tape or similar material and the two aligned hemispheres form a sphere within the material; thus a void of a known size has been created. This type of void can be used to simulate a pore in the development of radiographic techniques of actual voids (porosity) in welds and serve as a radiographic standard.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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