Clip gage attachment for frictionless measurement of displacement during high-temperature mechanical testing
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United States of America Patent
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Jan 4, 1994
Grant Date -
N/A
app pub date -
Aug 20, 1992
filing date -
Aug 20, 1992
priority date (Note) -
Expired
status (Latency Note)
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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. 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.
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