New Measuring Method of Three-Dimensional Residual Stresses in Long Welded Joints Using Inherent Strains as Parameters—Lz Method

[+] Author and Article Information
Yukio Ueda, Keiji Fukuda

Welding Research Institute, Osaka University, Osaka 567, Japan

J. Eng. Mater. Technol 111(1), 1-8 (Jan 01, 1989) (8 pages) doi:10.1115/1.3226427 History: Received February 03, 1987; Online September 15, 2009


In this paper, a new measuring method of three-dimensional residual stresses induced in a butt welded joint is presented. The proposed method is based on a general approach developed by the authors, in which inherent strains (the source of residual stresses) are dealt with as parameters. In the present report, three-dimensional residual stresses in a long body, in which the residual stress distribution is uniform in longitudinal direction, is considered as a special case. It is shown that the measurement of the three-dimensional residual stress, in this case, can be reduced to a combination of two sets of measurements of two-dimensional residual stresses. This method is applied to determine the residual stresses in an actual welded joint and its reliability and practicability are also demonstrated.

Copyright © 1989 by ASME
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