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Title: Clip gage attachment for frictionless measurement of displacement during high-temperature mechanical testing

Abstract

An attachment for placement between a test specimen and a remote clip gage extensometer providing improved fracture toughness tests of materials at elevated temperature is described. Using a cylindrical tube and axial rod in new relationship, the device transfers the displacement signal of the fracture toughness test specimen directly to a clip gage extensometer located outside the high temperature furnace. Virtually frictionless operation is assured by having the test specimen center one end of the rod in one end of the tube, while the clip gage extensometer arms center the other end of the rod in the other end of the tube. By providing positive control over both ends of both rod and tube, the attachment may be operated in orientations other than vertical. 1 figure.

Inventors:
Issue Date:
OSTI Identifier:
5152107
Patent Number(s):
5275057 A
Application Number:
PPN: US 7-932477
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN () PTO; EDB-94-064971
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Patent File Date: 20 Aug 1992
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 47 OTHER INSTRUMENTATION; DISPLACEMENT GAGES; DESIGN; MECHANICAL TESTS; MEASURING METHODS; OPERATION; TEST FACILITIES; MATERIALS TESTING; MEASURING INSTRUMENTS; TESTING; 420500* - Engineering- Materials Testing; 440800 - Miscellaneous Instrumentation- (1990-)

Citation Formats

Alexander, D.J. Clip gage attachment for frictionless measurement of displacement during high-temperature mechanical testing. United States: N. p., 1994. Web.
Alexander, D.J. Clip gage attachment for frictionless measurement of displacement during high-temperature mechanical testing. United States.
Alexander, D.J. Tue . "Clip gage attachment for frictionless measurement of displacement during high-temperature mechanical testing". United States.
@article{osti_5152107,
title = {Clip gage attachment for frictionless measurement of displacement during high-temperature mechanical testing},
author = {Alexander, D.J.},
abstractNote = {An attachment for placement between a test specimen and a remote clip gage extensometer providing improved fracture toughness tests of materials at elevated temperature is described. Using a cylindrical tube and axial rod in new relationship, the device transfers the displacement signal of the fracture toughness test specimen directly to a clip gage extensometer located outside the high temperature furnace. Virtually frictionless operation is assured by having the test specimen center one end of the rod in one end of the tube, while the clip gage extensometer arms center the other end of the rod in the other end of the tube. By providing positive control over both ends of both rod and tube, the attachment may be operated in orientations other than vertical. 1 figure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}