Sanjai K. Rai

TL;DR: In this article, the residual stress profiles of dissimilar pipe weld joints were determined using the X-ray diffraction (XRD) technique and it was shown that the Inconel-82 buttering layer employed in the dissimilar weld joint is useful in reducing the residual stresses in the heat affected zone (HAZ) region on the ferritic steel side of such weld joints.

TL;DR: In this article, the peak temperatures attained at different points during deposition of weld beads in stainless steel and low carbon steel weld pads were compared, and the residual stress patterns developed, the change in the peak tensile stress with the deposition of welding beads and the relation between peak temperatures and residual stresses in the weld pads are discussed.

TL;DR: Based on the ABAQUS software, uncoupled thermal-mechanical three-dimensional and two-dimensional (2-D) finite element models are developed in this article to evaluate the transient temperature and the residual stress fields during welding.

TL;DR: In this article, a unified equation to compute the energy density is proposed to compare works performed with distinct equipment and experimental conditions, covering the major process parameters: power, travel speed, heat source dimension, hatch distance, deposited layer thickness and material grain size.

TL;DR: In this paper, the effect of initial pH and temperature of iron salt solutions on formation of magnetite (Fe3O4) nanoparticles during co-precipitation was reported.

TL;DR: In this article, the authors provide an overview on the current state of fracture mechanics application to weldments and discuss the specific features which any fracture mechanics analysis of weldments has to take into account.

TL;DR: In this article, the effect of geometry configurations on the residual stress distributions were predicted from the 3D computer analysis using a thermo-elastoplastic constitutive equation and compared with the X-ray diffraction method.