The Comparison of the Fracture Behavior of Weld Metal in P235GH Steel Pipes with Varying Geometrical Dimensions and Utilized Welding Technologies
摘要
In this paper, a comparison of fracture behavior of P235GH steel pipe weld metal samples was performed. The pipe diameter, weld thickness, and applied welding technology in the observed welded material samples vary. The analysis was carried out for both working and welding residual stress conditions. For the purpose of the analysis, various values of the pipe internal pressure as working stresses were considered. Through the use of the incremental hole drilling methodology, the residual stresses were determined and used in the investigation. The fracture behavior was analyzed by application of SINTAP methodology using FAD concept. Parameters needed for FAD concept were specified by experimental tests and numerical calculations using finite element method.