There are some ferritic low alloy steel components including dissimilar metal welding parts in a nuclear power plant. Residual stress induced by welding process is one of the factors that may lead a sound component to have a defect. Therefore it is necessary that the distribution of residual stress is obtained to predict the behavior of a dissimilar metal welding part. In this paper, the distribution of residual stress obtained by finite element analysis is investigated to assess the stress intensity factor of a corner crack in pressurizer vent nozzle penetration weld. Then the stress intensity factor and plastic zone correction of a corner crack are calculated under internal pressure, thermal stress and residual stress in accordance with Electric Power Research Institute equation . The resulting stress intensity factor and plastic-zone correction were compared with those obtained from Structural Integrity Associates.
A Residual Stress Analysis of a Corner Crack in Pressurizer Vent Nozzle Penetration Weld
- Views Icon Views
- Share Icon Share
- Search Site
Lee, S, Park, J, Choi, Y, Chung, H, Cho, D, Chang, Y, & Kim, Y. "A Residual Stress Analysis of a Corner Crack in Pressurizer Vent Nozzle Penetration Weld." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 1: Codes and Standards. Prague, Czech Republic. July 26–30, 2009. pp. 317-322. ASME. https://doi.org/10.1115/PVP2009-77613
Download citation file: