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Impact tensile testing of wiresThe test consists of fixing one end of a wire specimen and allowing a threaded falling weight to strike the other. Assuming the dynamic stress in the wire to be a function only of its strain, energy considerations show for negligible wire inertia effects that the governing dynamic stress-strain law can be determined directly from impact energy vs. wire elongation data. Theoretical calculations are presented which show negligible wire inertia effects for ratios of wire mass to striking mass of the order of .01 or less. The test method is applied to soft copper wires and the dynamic stress-strain curve so determined is found to be about 30 percent higher than the corresponding static curve.
Document ID
19770003319
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dawson, T. H.
(Naval Academy Annapolis, MD, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: NASA. Langley Res. Center Advan. in Eng. Sci., Vol. 1
Subject Category
Mechanical Engineering
Accession Number
77N10261
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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