Jong-Wook Kim
Orthogonal polynomialsParametric statisticsEngineeringPressure vesselFinite element methodBoiler (power generation)Round robin testEigenvalues and eigenvectorsThermal shockReactor pressure vesselBoundary value problemMaterials scienceVibrationPipingNuclear power plantStructural integrityIntegrity assessmentPressure temperatureProbabilistic logicStress intensity factorNozzleMechanicsFracture mechanicsStructural engineeringLaplace's equationNatural frequencyCompatibility (mechanics)
16Publications
6H-index
55Citations
Publications 23
Newest
#1Shin-Beom ChoiH-Index: 4
#2Han-Bum SurhH-Index: 1
Last. Jong-Wook KimH-Index: 6
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Abstract In accordance with ASME Boiler and Pressure Vessel (B&PV) Code Sec.XI Appendix. G, a postulated crack is located at the beltline of a reactor pressure vessel because the neutron flux at the beltline is higher than elsewhere. This means that the distance between the core and the semi-spherical bottom head is longer than the distance between the core and the cylindrical beltline. However, several Small and Medium sized Reactors have bottom heads with diverse shapes, including dished or se...
2 CitationsSource
#1Jong-Wook KimH-Index: 6
Last. Shin-Beom ChoiH-Index: 4
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The objective of this study is to evaluate the structural integrity of a reactor pressure vessel during a pressurized thermal shock event by applying deterministic fracture mechnics. The deterministic fracture mechanics analysis was performed by using the three dimensional finite element models. The impacts of the input parameters, such as the crack location, the aspect ratio, and the cladding properties were reviewed with the corresponding sensitivity analyses. In addition, the maximum aloowabl...
#1Shin-Beom ChoiH-Index: 4
#2Han-Bum SurhH-Index: 1
Last. Jong-Wook KimH-Index: 6
view all 3 authors...
1 CitationsSource
#1Han-Bum SurhH-Index: 1
#2Shin-Beom ChoiH-Index: 4
Last. Han-Ok Ko (Korea Institute of Nuclear Safety)H-Index: 1
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#1Shin-Beom ChoiH-Index: 4
#2Han-Bum SurhH-Index: 1
Last. Jong-Wook KimH-Index: 6
view all 3 authors...
1 CitationsSource
#1Han-Bum SurhH-Index: 1
#2Jong-Wook KimH-Index: 6
Last. Nam-Su Huh (Seoul National University of Science and Technology)H-Index: 6
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The stress intensity factor (SIF) is the major fracture mechanics parameter in LEFM concept. Since the SIF can be used for not only calculation of J-integral based on the GE/EPRI and reference stress method but also evaluation of fatigue crack growth, an accurate estimation of the SIF is an important issue for the piping in nuclear power plant. Recently, there is a need to develop the SIF solution which can cover wide geometric variables since there are on-going efforts that are developing next ...
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The analytical method to calculate the natural frequencies of an open rectangular container partially filled with water is suggested. The wet dynamic displacements of the U-shaped container are approximated by combining the orthogonal polynomials. The liquid displacement potentials describing the Laplace equation are deduced so that the liquid boundary conditions can be satisfied. The relationship between the structure and liquid is derived by the compatibility requirement using the finite Fouri...
2 CitationsSource
This paper deals with a theoretical method to calculate natural frequencies of a fixed–free rectangular tank partially in contact with an outer water gap. Orthogonal polynomials satisfying the boundary conditions of the tank are used as admissible functions in the Rayleigh–Ritz method. A quarter model of the liquid-coupled system is constructed and it is simplified to a line supported flat plate in contact with the liquid. The liquid displacement potential functions satisfying the Laplace equati...
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#1Kyeong-Hoon JeongH-Index: 12
#2Jong-Wook KimH-Index: 6
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#1Tae-Young Ryu (SKKU: Sungkyunkwan University)H-Index: 2
#2Han-Beom Seo (SKKU: Sungkyunkwan University)
Last. Sang-Yun ParkH-Index: 1
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For integrity assessment of structure containing crack, evaluation method based on fracture mechanics such as linear-elastic and elastic-plastic fracture mechanics has been relatively common method and becoming more widespread. However, it can be used only if the crack opening or tearing is occurred. If the crack exists on the piping components subjected to internal pressure, net-section stress is occurred in the direction on crack opening no matter where crack locate. On the contrary to this, i...
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