Jong Sung Kim

TL;DR: In this paper, microstructures of dissimilar metal welds composed of low alloy steel, Inconel 82/182 weld, and stainless steel were prepared by gas tungsten arc welding and shielded metal arc welding techniques.

TL;DR: In this article, the effects of several parameters such as boundary layer thickness, temperature difference, stratification length, wall thickness, inner diameter and material properties on peak temperature and peak stress intensity due to nonlinear temperature distribution of thermal stratification in a pipe cross-section are studied through the numerical parametric study.

TL;DR: In this article, the applicability of existing methods to estimate stress intensity factors due to welding residual stresses, comparisons with finite element (FE) solutions are made for two types of generic welding residual stress profiles, generated by simulating repair welds.

TL;DR: In this article, the authors present an analysis of failure assessment diagram for PE4710 grade high density polyethylene pipes, which are recently concerned to use in the nuclear industry.

TL;DR: In this article, the effect of thermal aging embrittlement on the residual stresses of repair welds in nuclear components subject to seismic loads was investigated and it was shown that the residual stress of the repair weld is significantly mitigated after the seismic loads.