Nam-Su Huh
Seoul National University of Science and Technology
EngineeringFinite element methodCreepBoiler (power generation)Composite materialInternal pressureMaterials scienceWeldingTension (physics)Surface (mathematics)Stress corrosion crackingPipingCrack tip opening displacementStress intensity factorMechanicsFracture mechanicsStructural engineeringCrack closureBendingStress (mechanics)
104Publications
6H-index
208Citations
Publications 101
Newest
#1Jun-Young Kim (Sejong University)H-Index: 2
#2Jong Min Lee (KU: Korea University)H-Index: 3
Last. Yun-Jae Kim (KU: Korea University)H-Index: 4
view all 12 authors...
Abstract null null As a part of round robin analysis to develop a finite element elastic-plastic seismic analysis procedure for nuclear safety class 1 components, a series of parametric analyses was carried out on the simulated pressurizer surge line system model to investigate sensitivity of the analysis results to finite element analysis variables. The analysis on the surge line system model considered dynamic effect due to the seismic load corresponding to PGA 0.6 g and elastic-plastic materi...
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#1Youn-Young Jang (Seoul National University of Science and Technology)H-Index: 5
#2Nam-Su Huh (Seoul National University of Science and Technology)H-Index: 6
Last. Young-Pyo Kim (Korea Gas Corporation)H-Index: 7
view all 4 authors...
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#1Ji-Hee Moon (Seoul National University of Science and Technology)H-Index: 1
#2Youn-Young Jang (Seoul National University of Science and Technology)H-Index: 5
Last. Kyoungsoo Park (Yonsei University)H-Index: 20
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Abstract This paper presents ductile fracture simulation of full-scale cracked pipe for nuclear piping materials using the cohesive zone model (CZM). The main objective of this study is to investigate the applicability of CZM to predict ductile fracture of cracked pipes with various crack shapes and under quasi-static/dynamic loadings. The transferability of the traction-separation (T-S) curve from a small-scale specimen to a full-scale pipe is demonstrated by simulating small- and full-scale te...
1 CitationsSource
#1Si-Hwa Jeong (SKKU: Sungkyunkwan University)
#2Min-Gu Won (SKKU: Sungkyunkwan University)H-Index: 3
Last. Hyeong-Yeon LeeH-Index: 13
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Abstract The present paper provides engineering estimates for plastic J-integral and crack opening displacement (COD) of a non-idealized axial through-wall crack (TWC) in pipes based on detailed 3-dimensional finite element (FE) analyses. The behaviors of plastic J-integral and COD of a non-idealized axial TWC in typical pressurized pipes in nuclear power plants were systematically investigated. The FE model and analysis procedure employed in this study were verified by comparing the present FE ...
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#1Youn-Young Jang (Seoul National University of Science and Technology)H-Index: 5
#2Ju-Yeon Kang (Dassault Systèmes)
Last. Young-Pyo Kim (Korea Gas Corporation)H-Index: 7
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#1Min Kyu Kim (SKKU: Sungkyunkwan University)H-Index: 1
#1Min Kyu Kim (SKKU: Sungkyunkwan University)H-Index: 9
Last. Kyunghoon Kim (SKKU: Sungkyunkwan University)H-Index: 12
view all 6 authors...
Source
#1Youn-Young Jang (Seoul National University of Science and Technology)H-Index: 5
#2Nam-Su Huh (Seoul National University of Science and Technology)H-Index: 6
Last. Young-Pyo Kim (Korea Gas Corporation)H-Index: 7
view all 5 authors...
Source
#1Ik-Joong KimH-Index: 2
#2Yun-Chan Jang (Korea Gas Corporation)H-Index: 1
Last. Nam-Su HuhH-Index: 6
view all 5 authors...
Various tensile strain capacity (TSC) prediction equations have recently been presented by many research organizations such as Pipeline Research Council International and ExxonMobil Corporation. The gas industry uses these equations to determine the allowable strain for the cracked pipe. However, these TSC prediction equations cannot be applied to pipes with other defects such as corrosion or mechanical damage. Corrosion defects are the most common type of defect in actual operating conditions, ...
3 CitationsSource
#1Min-Gu Won (SKKU: Sungkyunkwan University)H-Index: 3
#2Si-Hwa Jeong (SKKU: Sungkyunkwan University)
Last. Jae-Boong Choi (SKKU: Sungkyunkwan University)H-Index: 20
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Abstract In this study, creep elastic follow-up (EFU) factor solutions are developed for the piping design of high-temperature reactors. A straight pipe under combined primary and secondary loadings is considered for high-temperature piping. Axial tension, internal pressure, and bending moment are applied to the straight pipe as a primary loading condition. The thermal stress caused by the temperature gradient through the thickness is considered as a secondary loading. Applying the similarity be...
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#1Min Kyu Kim (SKKU: Sungkyunkwan University)H-Index: 9
#1Min Kyu Kim (SKKU: Sungkyunkwan University)H-Index: 1
Last. Kyunghoon Kim (SKKU: Sungkyunkwan University)H-Index: 12
view all 5 authors...
Abstract Various fracture mechanics parameters should be considered for elbow design and leak-before-break assessment. In the case of a pipe with through-wall cracks (TWCs), the stress intensity factor (SIF) and elastic crack opening displacement (COD) are among the most important factors. Many studies have determined the SIF and elastic COD for idealized TWC straight and elbow pipes. However, no study has considered realistic crack geometries occurring in elbow joints. Thus, the objective of th...
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