Load analyses of welded high-strength steel structures using image correlation and diffraction techniques

Residual Stress Formation in Component Related Stress Relief Cracking Tests of a Welded Creep-Resistant Steel

“…High tensile residual stress maxima located in the HAZ are characteristic for transformation affected welds. Similar residual stress distributions are known from high-strength steel welds [6,12,13]. Spec.…”

“…For that reason, it is currently not possible to realistically depict the interaction between the mechanical, thermal and metallurgical factors on a laboratory scale. For that purpose, geometry of laboratory specimens was adapted that residual stress state of realistic component-like weld can be simulated [5,6]. Different stress conditions were set by varying the geometry and welding parameters.…”

“…-3D-hindered shrinkage due to high restraint, cf. [6]), a medium U-shape notch specimen (Spec. B -high longitudinal shrinkage inhibition) and a small-scale specimen (Spec.…”

“…A: Single DC-mode and Spec. B: Tandem process DC+AC) with multi-layer technique and represent an approach for self-restraint weld joint samples in accordance to [5,6]. A disadvantage for a self-restraint specimen is the necessary thickness.…”

In-Situ Determination of Critical Welding Stresses During Assembly of Thick-Walled Components made of High-Strength Steel

“…1a. Current studies reveal that the far-field loads may increase dependent on the stiffness of the structure, the welding process conditions and the applied filler and base materials, and critically prepossess also the near-field residual stress level in the weld seam [3,6].…”