Method and apparatus for determining the elongation property of

Details Method and apparatus for determining the elongation property of Method and apparatus for determining the elongation property of

1985-07-29

1986-07-15

Kreitman, Stephen A.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73826, 374 50, G01N 308

Patent

active

045999058

ABSTRACT:
A method and an apparatus for determining the eventual elongation property of a copper wire which has been cold drawn with an intermediate anneal and which is to be subsequently subjected to a predetermined heat treatment by a final in-line continuous anneal. Before a sample length of such wire is elongated to its breaking point in a tensile testing device, a capacitor is discharged through the wire length to produce a heating current flow therethrough of a magnitude and duration that produces a heat treatment of the wire length which approximately simulates that which would be the result of the final in-line continuous anneal. For this purpose, the wire holding devices of the tensile testing device have contact means to establish connection of the wire length in a discharge circuit for the capacitor.

REFERENCES:
patent: 2436317 (1948-02-01), Manjoine
patent: 3100253 (1963-08-01), O'Connor
patent: 3453863 (1969-07-01), Scott
Heckel et al., Apparatus for Testing the Creep Behavior of Metallic Materials at Constant or Varying Temperatures and Constant Tensile Load, Materials Testing, Dec. 1968, vol. 10, #12, Dusseldorf.

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