Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1986-04-14
1987-07-07
Levy, Stewart J.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
G01N 320
Patent
active
046778560
ABSTRACT:
Apparatus for testing the ductility of a weld located within an elongated specimen is used with a separate apparatus having a lowerable ram. The apparatus includes a base defining a support surface having a central opening. Each roller of a pair has a width sufficient for supporting the test specimen, and is connected to the base to extend over the opening. A beam located above the base is guided for movement toward and away from the support surface, and is biased upwardly into a raised position over the surface. A mandrel extends downwardly from the beam, defining at its end a working surface. When the beam is in its raised position, the mandrel is located with the working surface above but between the rollers. The specimen may be positioned on the rollers with the weld disposed between the rollers. The mandrel is forced downwardly by the ram, with the mandrel contacting the specimen along the working surface to bend the specimen into the opening. The bending process exhibits the ductility of the weld as well as the presence of any defects in the weld.
REFERENCES:
patent: 2676381 (1954-04-01), Holmes
patent: 3142174 (1964-07-01), Baker
patent: 3500679 (1970-03-01), Smith
patent: 4573360 (1986-03-01), Yoneda
Levy Stewart J.
Raevis Robert R.
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