proof stress


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proof stress

[′prüf ‚stres]
(mechanics)
The stress that causes a specified amount of permanent deformation in a material.
A specified stress to be applied to a member or structure in order to assess its ability to support service loads.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

proof stress

A stress, either compression or tension, which is applied to a material to determine the magnitude required to produce a specified permanent deformation usually specified as a percentage of the original length.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
In both alloys, the longer the exposure time, the lower the elongation and reduction of area became while showing a slight increase in the proof stress. Especially noteworthy is that the rate of lowering of elongation and reduction of area in relation to the exposure time is lower in Ti-72SiCN than in Ti-6242S.
Strength properties, including proof stress, were determined in static uniaxial tension test on testing machine Instron of 1116 type.