Search Results - "Huh, Nam Su"

New engineering J-estimation schemes for complex cracked pipes based on energy equivalence concept by Park, Seung-Hyun, Lee, Sangmin, Brust, Frederick W., Huh, Nam-Su

“…•Elastic-plastic J-integral solution for complex cracked pipe was developed in closed-form based on fracture mechanics.•The energy equivalence assumption…”
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Investigation of the Conservatism in Multiple Cracks Coalescence Criteria Using Finite Element-Based Crack Growth Analysis by Hong, Chan-Gi, Lee, Gi-Bum, Huh, Nam-Su

“…The interactions between multiple cracks significantly influence fracture mechanics parameters, necessitating their consideration in crack assessments. Codes…”
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Thermal aging of Gr. 91 steel in supercritical thermal plant and its effect on structural integrity at elevated temperature by Won, Min-Gu, Jeong, Si-Hwa, Huh, Nam-Su, Kim, Woo-Gon, Lee, Hyeong-Yeon

“…In this study, the influence of thermal aging on structural integrity is investigated for Gr. 91 steel. A commercial grade Gr. 91 steel is used for the virgin…”
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Estimation of tensile strain capacity for thin-walled API X70 pipeline with corrosion defects using the fracture strain criteria by Kim, Ik-Joong, Jang, Yun-Chan, Jang, Youn-Young, Moon, Ji-Hee, Huh, Nam-Su

“…Various tensile strain capacity (TSC) prediction equations have recently been presented by many research organizations such as Pipeline Research Council…”
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Engineering C‐integral and COD estimates for nonidealized circumferential through‐wall cracked pipes at elevated temperature by Won, Min‐Gu, Kim, Kyunghoon, Huh, Nam‐Su, Kim, Woo‐Gon, Lee, Hyeong‐Yeon

“…In this study, creep fracture mechanics parameters, C*‐integral and crack opening displacement (COD) rate, are estimated for a nonidealized circumferential…”
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Effect of damage evaluation method and cyclic hardening models on strain-based fatigue assessment to a piping system under seismic loads by Chang, Dong-Joo, Lee, Jong-Min, Nam, Hyun-Suk, Huh, Nam-Su, Kim, Yun-Jae, Kweon, Hyeong-Do, Kim, Jong-Sung

“…In this paper, strain-based damage assessment based on elastic-plastic FE analysis was carried out for the piping system test under seismic loads conducted at…”
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Development of Automatic Crack Growth Simulation Program Based on Finite Element Analysis by Lee, Gi-Bum, Park, Seung-Hyun, Jang, Youn-Young, Huh, Nam-Su, Park, Sung-Hoon, Park, Noh-Hwan, Park, Jun

“…A crack growth simulation program based on the advanced iterative-finite element method (AI-FEM) was developed to predict realistic crack growth of structures…”
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Application of cohesive zone model to large scale circumferential through-wall and 360° surface cracked pipes under static and dynamic loadings by Moon, Ji-Hee, Jang, Youn-Young, Huh, Nam-Su, Shim, Do-Jun, Park, Kyoungsoo

“…This paper presents ductile fracture simulation of full-scale cracked pipe for nuclear piping materials using the cohesive zone model (CZM). The main objective…”
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Numerical investigation of the transferability of ductile fracture behavior between thin-walled surface-cracked pipe, curved wide plate (CWP) and single edge notched tension (SENT) specimens by Jang, Youn-Young, Kim, Ik-Joong, Huh, Nam-Su, Kim, Ki-Seok, Kim, Young-Pyo

“…Curved wide plate (CWP) and single edge notched tension (SENT) tests are commonly considered for determining the fracture toughnesses of high-strength…”
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Round robin analysis to investigate sensitivity of analysis results to finite element elastic-plastic analysis variables for nuclear safety class 1 components under severe seismic load by Kim, Jun-Young, Lee, Jong Min, Park, Jun Geun, Kim, Jong-Sung, Cho, Min Ki, Ahn, Sang Won, Koo, Gyeong-Hoi, Lee, Bong Hee, Huh, Nam-Su, Kim, Yun-Jae, Kim, Jong-In, Nam, Il-Kwun

“…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…”
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Prediction of fracture parameters of circumferential through-wall cracks in the interface between an elbow and a pipe under internal pressure by Jang, Youn-Young, Jeong, Jae-Uk, Huh, Nam-Su

“…This paper provides plastic influence functions of GE/EPRI method for calculating J and Crack opening displacement (COD) of pipes with a circumferential…”
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Effects of work hardening models on low-cycle fatigue evaluations of coiled tubing with CT-100 steel by Ryu, Tae-Young, Choi, Jae-Boong, Huh, Nam-Su, Kang, Soo-Chang, Kim, Ki-Seok

“…In the present study, low-cycle fatigue life of a coiled tubing (CT) with a CT-100 steel was evaluated by using various work hardening models. Tensile and…”
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Application of cohesive zone model to large scale circumferential through-wall and 360° surface cracked pipes under static and dynamic loadings by Moon, Ji-Hee, Jang, Youn-Young, Huh, Nam-Su, Shim, Do-Jun, Park, Kyoungsoo

“…This paper presents ductile fracture simulation of full-scale cracked pipe for nuclear piping materials using the cohesive zone model (CZM). The main objective…”
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Non-linear modeling of stress relaxation curves for Grade 91 steel by Kim, Woo-Gon, Park, Jae-Young, Won, Min-Gu, Lee, Hyeong-Yeon, Huh, Nam-Su

“…We focused on the modeling of the high-temperature Stress relaxation (SR) curves for Gr. 91 steel using two nonlinear models of a spring-dashpot and Peleg…”
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Fully plastic crack opening analyses of complex-cracked pipes for Ramberg-Osgood materials by Jeong, Jae-Uk, Choi, Jae-Boong, Huh, Nam-Su, Kim, Yun-Jae

“…The plastic influence functions for calculating fully plastic Crack opening displacement (COD) of complex-cracked pipes were newly proposed based on systematic…”
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Failure analysis of the rotating shaft in the rail grinding car by Kim, Donghyun, Park, Yewon, Kang, Byungsun, Huh, Nam-Su

“…•A rail grinding car prevents rail damage and derailment of the vehicle.•Hardness deficiency of the shaft can be improved through low-temperature…”
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Round robin analysis to investigate sensitivity of analysis results to finite element elastic-plastic analysis variables for nuclear safety class 1 components under severe seismic load by Kim, Jun-Young, Lee, Jong Min, Park, Jun Geun, Kim, Jong-Sung, Cho, Min Ki, Ahn, Sang Won, Koo, Gyeong-Hoi, Lee, Bong Hee, Huh, Nam-Su, Kim, Yun-Jae, Kim, Jong-In, Nam, Il-Kwun

“…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…”
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Crack-tip constraints of through-wall cracked pipes and its similarity to curved wide plates by Jang, Youn-Young, Jeong, Jae-Uk, Huh, Nam-Su, Kim, Ki-Seok, Cho, Woo-Yeon

“…In the present study, the effects of pipe geometries, material properties and loading conditions on crack-tip constraints of pipes with circumferential…”
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Analytical approach to estimate the thermal stress distribution of reactor pressure vessel nozzle corners with a constant cooldown rate by Oh, Changsik, Lee, Sangmin, Jhung, Myung Jo, Huh, Nam-Su

“…Concerns about the integrity of the nozzle corners of reactor pressure vessels have been raised due to the long-term operation of nuclear power plants. Because…”
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Shakedown and limit analyses of a pressurised water reactor vessel nozzle under cyclic thermo-mechanical loadings by Choi, Youngjae, Cho, Nak-Kyun, Yang, Junhyeok, Yun, Heejin, Lee, Haeun, Huh, Nam-Su

“…•Cyclic plasticity of a RPV nozzle subjected to complex thermo-mechanical loadings has been investigated using The Linear Matching Method.•Elastic shakedown…”
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