Volume defect is the common defect in high temperature pressure pipeline. Those defects have a great influence on stress redistribution of the pipes in high temperature, and affect the integrity and safety operation of high temperature components. In this paper, the defects were regularized, and a high temperature creep model was established. Based on this model, creep behavior of high temperature pressure pipeline with volume defect was studied, and the stress concentration of the main feature points in the defect was researched. Then, defects interference effect was discussed, and the critical interference distance was given. The results provide theoretical support to the safety assessment of high temperature structure with defects.

This content is only available via PDF.
You do not currently have access to this content.