Comparison of residual stresses on long rolled profiles measured by X-ray diffraction,ring core and the sectioning methods and simulated by FE method

Chantal Bouffioux (1) , Raphaël Pesci (2) , Romain Boman (3) , Nicolas Caillet (4) , Jean-Philippe Ponthot (3) , Anne-Marie Habraken (1)

1 Departement Architecture, Géologie, Environnement et Constructions - ArGEnCo (Liège, Belgium)
2 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
3 LTAS - Aerospace and Mechanical Engineering Department [Liège]
4 ArcelorMittal Maizières Research SA

Sheet piles are produced by hot rolling, a cooling step and, if required, by a straightening operation. Numerical simulations indicate that the stress field is almost homogeneous through the thickness, justifying the comparison of X-ray diffraction, ring core and the sectioning methods applied after the cooling step and after the straightening process. The equipment, the steps of the experimental procedures and the results are detailed, showing the limits, the specificities and the advantages of each method. Moreover, the amplitude and the distribution of the stresses along the width of the sections present good agreement with results of numerical simulations.

Mots clés: Residual Stresses; X-ray diffraction; Ring-core; Sectioning; Sheet piles; Structural steel

Domaines: Matériaux

Chantal Bouffioux, Raphaël Pesci, Romain Boman, Nicolas Caillet, Jean-Philippe Ponthot, et al.. Comparison of residual stresses on long rolled profiles measured by X-ray diffraction,ring core and the sectioning methods and simulated by FE method. Thin-Walled Structures, 2016, 104, pp.126-134. ⟨10.1016/j.tws.2016.03.017⟩. ⟨hal-01342923⟩