11 Result(s)

Article

Influence of thermal flow and predicting phase transformation on various welding positions

This study performed computational fluid dynamics (CFD) simulation to investigate the flow patterns of molten pool during welding with a transient heat transfer. The influence of gravity changed the flow patte...

**-Hyeong Park, Du-Song Kim, Dae-Won Cho, Jaewoong Kim… in Heat and Mass Transfer (2024)

Article

Understanding Crack Formation Mechanisms of Ti–48Al–2Cr–2Nb Single Tracks During Laser Powder Bed Fusion

The crack formation mechanisms of Ti–48Al–2Cr–2Nb single tracks processed by laser powder bed fusion were extensively investigated in a wide range of laser powers and scan speeds. The crack patterns were categ...

Seulbi Lee, Jaewoong Kim, Jungho Choe… in Metals and Materials International (2021)

Article

Calibration of Laser Penetration Depth and Absorptivity in Finite Element Method Based Modeling of Powder Bed Fusion Melt Pools

A systematic parametric study was conducted using thermal finite element method simulations in order to calibrate the laser penetration depth and absorptivity as a function of the laser power and scan speed fo...

Jaewoong Kim, Seulbi Lee, Jae-Keun Hong, Namhyun Kang… in Metals and Materials International (2020)

Article

Micro-Cracking in Medium-Carbon Steel Layers Additively Deposited on Gray Cast Iron Using Directed Energy Deposition

Single track and multi-layers of medium-carbon steel (AISI H13) powders were additively deposited on gray cast iron using a directed energy deposition (DED) technique. Multi-scale microstructure characterizati...

Seulbi Lee, Jaewoong Kim, Do-Sik Shim, Sang-Hu Park… in Metals and Materials International (2020)

Chapter and Conference Paper

Invariant 3D Line Context Feature for Instance Matching

Conventional Approaches to line segment matching have shown their performances less satisfactory mainly since some of the features used for matching, such as the center and the starting/ending points of line ...

Kyungsang Cho, Jaewoong Kim, Sukhan Lee in Proceedings of the 13th International Conf… (2019)

Article

Aluthge Transforms and Common Invariant Subspaces for a Commuting \(\varvec{n}\) -Tuple of Operators

It is well known that a bounded operator with dense range has a nontrivial invariant subspace if and only if its Aluthge transform does. Recently, R. Curto and Jasang Yoon have introduced the toral and spheric...

Jaewoong Kim, Jasang Yoon in Integral Equations and Operator Theory (2017)

Article

Proactive Human Search for the Designated Person with Prior Context Information in an Undiscovered Environments

This paper describes a scheme for proactive human search for a designated person in an undiscovered indoor environment without human operation or intervention. In designing and develo** human identification ...

Sangseok Yun, Bong** Jun, Dai** Kim… in Journal of Intelligent & Robotic Systems (2012)

Article

Speed Sensitive Air Conditioning System for Fuel Economy and Power Performance

Changwon Lee, Kilyong Jang, Chunkyu Kwon, Jaewoong Kim in ATZ worldwide eMagazine (2011)

Article

Geschwindigkeitsabhängige Klimaanlage zur Kraftstoffersparnis und Leistungsoptimierung

Changwon Lee, Kilyong Jang, Chunkyu Kwon… in ATZ - Automobiltechnische Zeitschrift (2011)