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proof stress[′prüf ‚stres]
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.
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.