Jae Hyoung Lee
Pukyong National University
Semidefinite programmingRegular polygonFiller metalConvex analysisMathematical optimizationFerrite (iron)Evaluation functionOptimization problemHeat-affected zoneNonlinear systemComposite materialStrong dualityShielded metal arc weldingShielding gasSet (abstract data type)Intergranular corrosionMetallurgyMaterials scienceWeldingLinear matrix inequalityArc weldingConstraint (information theory)Pitting corrosionApplied mathematicsWeld metalMathematicsGas tungsten arc weldingAtmospheric temperature rangeGas metal arc weldingScalar (mathematics)Volume fractionMulti-objective optimizationConvexityAusteniteRobustness (computer science)Duplex (building)
6Publications
2H-index
8Citations
Publications 6
Newest
#1Liguo JiaoH-Index: 1
#2Jae Hyoung LeeH-Index: 2
Last. Tamaki TanakaH-Index: 13
view all 4 authors...
In this paper, we aim to find efficient solutions of a multi-objective optimization problem over a linear matrix inequality (LMI in short), in which the objective functions are SOS-convex polynomials. We do this by using two scalarization approaches, that is, the \epsilonconstraint method and the hybrid method. More precisely, we first transform the considered multi-objective optimization problem into their scalar forms by the \epsilonconstraint method and the hybrid method, respectively. ...
Source
#1Yuto OgataH-Index: 2
#2Yutaka SaitoH-Index: 2
Last. Jae Hyoung LeeH-Index: 2
view all 5 authors...
#1Yuto Ogata (Niigata University)H-Index: 2
#2Tamaki Tanaka (Niigata University)H-Index: 13
Last. Jae Hyoung Lee (Pukyong National University)H-Index: 2
view all 5 authors...
AbstractThis paper contains a generalized Gordan-type alternative theorem for set-valued maps which characterizes set relations without any convexity assumptions using certain evaluation functions. As a direct consequence and as a good example, we discuss robustness (or stability) of linear programming problems for modelling error. Moreover, this theorem can be utilized for that of general vector optimization problems in special cases due to reformation of the evaluation functions.
Source
#1Jae Hyoung LeeH-Index: 2
#2Byong-Ho JungH-Index: 1
Last. Jae-Ho JunH-Index: 1
view all 4 authors...
Superduplex stainless steels are important materials to the oil and gas industry, especially for off-shore production. TIG welding of super duplex stainless steels to obtain the optimal phase balance between austenite and ferrite is mainly achieved by controlling the cooling rate and the weld chemistry. The latter depends on the filler wire chosen and the shielding gas used. If TIG welding of superduplex stainless steels is performed with argon shielding gas only, then nitrogen gets lost from th...
Source
#1Jae Hyoung LeeH-Index: 2
#2Gi-Jeong SeoH-Index: 4
Last. Chang-Yong KangH-Index: 1
view all 4 authors...
A specimen of weld metal was prepared by GTA welding with weld wire of super duplex stainless steel. Aging treatment was conducted for the sample at the temperature range of 700 to for 5 to 300 minutes. The effect of aging temperature and time to pitting corrosion of weld metal has been investigated and the results were derived as follows. The volume fraction of phase tends to increase with an increase of aging temperature and time. Pitting potential Ep representing pitting corrosion was found t...
Source
#1Jae Hyoung Lee (Pukyong National University)H-Index: 2
#2Byong-Ho JungH-Index: 1
Last. Chang-Yong KangH-Index: 1
view all 4 authors...
A specimen of weld metal was prepared by GTA welding with weld wire of super duplex stainless steel. Aging treatment was conducted for the sample at the temperature range of 700 to for 5 to 300 minutes. The effect of volume fraction of -phase to intergranular corrosion of weld metal has been investigated and the results were derived as follows. The volume fraction of phase tends to increase with an increase of aging temperature and time and intergranular corrosion of weld metal was increased by ...
Source
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.