K-0812 ビードフラッシュ法の溶接配管への適用に関する基礎研究(S11-3 構造健全性評価(3))(S11 構造健全性評価)

概要

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Authors have proposed a new nondestructive stress evaluation method, the bead flush method, and its validity has been confirmed for a simple butt-welded plate. In this method, eigen-strain distributions are estimated from strain changes due to removal of reinforcement of weld using the inverse analysis. Then, residual stresses are estimated according to the elastic FEM (Finite Element Method) analysis using estimated eigen-strain distributions as initial strains. In this study, further development of this method for application to welded pipes was attempted. Eigen-strain distributions in welded pipes are more complicated than those of welded plate. As a first step, a basic formulization was attempted to overcome this difficulty and future problems to be solved were made clear.
社団法人日本機械学会の論文
2001-08-22