Mechanical Behaviors in Very Thick Welded Joint from Stress Relief Annealing Estimated by A Simple Specimen(Mechanics, Strength & Structural Design)
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A simple specimen for multipass butt welded joint of very thick plates was developed in this study to obtain the stresses and creep strains near the finishing few beads from stress relief annealing, where cold cracks and SR cracks might be produced. Approximate distributions of the stresses and creep strains can be calculated by a theoretical analysis or measured by an experiment, using the simple specimen. This method can make CPU time in the analysis very short and can make labor in the analysis or the experiment very little. Moreover, the above approximate magnitudes of maximum stresses and strains are somewhat larger than the ones of the original joint, and so the cracks may be produced more easily in the simple specimen rather than in the original joint. Accordingly, the simple specimen is suitable for a cracking test.
- 大阪大学の論文
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