Numerical Analysis of Welding Residual Stress and Its Verification Using Neutron Diffraction Measurement
Author:
Mochizuki Masahito1, Hayashi Makoto, Hattori Toshio2
Affiliation:
1. Department of Manufacturing Science, Osaka University, Suita, Osaka 565-0871, Japan (Formerly, Hitachi, Ltd.) 2. Mechanical Engineering Research Laboratory, Hitachi, Ltd., Tsuchiura, Ibaraki 300-0013, Japan
Abstract
Direct measurements and computed distributions of through-thickness residual stress in a pipe butt-welded joint and a pipe socket-welded joint are compared. The analytical evaluation methods used were inherent strain analysis and thermal elastic-plastic analysis. The experimental methods were neutron diffraction for the internal residual stress, and X-ray diffraction and strain-gauge measurement for the surface stress. The residual stress distributions determined using these methods agreed well with each other, both for internal stress and surface stress. The characteristics of the evaluation methods and the suitability of these methods for each particular welded object to be evaluated are discussed. [S0094-4289(00)01501-2]
Publisher
ASME International
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference17 articles.
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