Residual stresses in austenitic thin-walled pipe girth welds: Manufacture and measurements

Foroogh Hosseinzadeh, Behrooz Tafazzoli-Moghaddam, Ho Kyeom Kim, Peter John Bouchard, Vasileios Akrivos, Anastasia N. Vasileiou, Mike C Smith

Research output: Contribution to journalArticlepeer-review


Determining residual stresses in thin-walled pipes is challenging. They are potentially difficult targets for simulation, because they may not behave as simple axisymmetric structures during welding. Thin-walled pipes are more sensitive to changes in the welding heat input than thick-walled pipes. They are also under-represented in the existing population of residual stress measurements used to generate upper bound residual stress profiles for structural integrity assessments. In this paper, residual stress characterisation of two thin-walled austenitic girth welded pipes is presented. The overall geometries of the two mock-up designs were the same; they differed in the linear heat input per pass and the total number of weld passes. The residual stress characterisation was carried out using two independent measurement techniques; the contour method and neutron diffraction. The multiple-cut contour strategy was implemented to measure the cross-sectional maps of hoop and axial stresses on axial-radial and hoop-radial planes respectively. The contour method results are compared with stresses measured using neutron diffraction and specific residual stress distribution signatures observed are discussed.

Original languageEnglish
Article number105016
JournalInternational Journal of Pressure Vessels and Piping
Early online date1 Jul 2023
Publication statusPublished - 1 Dec 2023


  • Contour method
  • Finite element analysis
  • Neutron diffraction
  • Structural integrity
  • Weld residual stress


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