Residual Stresses in Welded Steels with Longitudinal Stiffeners Determined by Neutron and X-Ray Diffraction

摘要

The presented residual stresses were determined from a mild steel S355NL and a quenched and tempered high-strength steel S960QL by means of X-ray and neutron diffraction. The residual stresses were measured from welded steel plates with longitudinal stiffeners attached to both sides in as-welded condition after post weld treatment and mechanical loading. The objective of this paper is to present welding-induced residual stresses in longitudinal stiffeners in order to have a reliable reference for the evaluation of residual stress effects on fatigue strength. Furthermore, the results obtained are compared to residual stress measurements from earlier investigations.