Title :
Measuring and modelling residual stresses in a butt-welded P91 steel pipe
Author :
Yaghi, A.H. ; Hyde, T.H. ; Becker, A.A. ; Sun, W. ; Hilson, G. ; Simandjuntak, S. ; Flewitt, P. E J ; Pavier, M.J. ; Smith, D.J.
Author_Institution :
Univ. of Nottingham, Nottingham, UK
Abstract :
Residual stresses in a circumferentially butt-welded steel pipe have been measured and numerically predicted. The pipe, containing the circumferential weld, has an outer diameter of 290 mm and a wall thickness of 55 mm, typical of components in power generation plants. Residual stresses have been measured using the X-ray diffraction and deep-hole drilling techniques. Good correlation has been demonstrated with the predictions of an axisymmetric thermo-mechanical finite element model. The paper demonstrates that a mixed experimental and numerical approach is useful for determining the residual stress distribution in welded joints.
Keywords :
X-ray diffraction; butt welding; drilling; finite element analysis; internal stresses; pipes; steel; stress measurement; FeCJk; X-ray diffraction; axisymmetric thermo-mechanical finite element model; butt-welded P91 steel pipe; circumferentially butt-welded steel pipe; deep-hole drilling techniques; residual stress distribution; residual stress measurement; size 290 mm; size 55 mm; Drilling; Finite element methods; Power generation; Predictive models; Residual stresses; Steel; Stress measurement; Thermomechanical processes; Welding; X-ray diffraction; P91 steel pipe; X-ray diffraction; deep-hole drilling; finite element simulation; martensite transformation; residual stress; welding;
Conference_Titel :
Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4934-7
DOI :
10.1109/SUPERGEN.2009.5348017
