- Head of Department
Materials Deformation Department is focusing our efforts to create innovative forming technology and to rationalize forming processes based on the theoretical understanding for the elastic-plastic deformation behavior in order to enhance the added value of materials.
|Precision forming technology of lightweight metals (Al, Mg and Ti): technology transfer (royalty income \82,000,000).|
|Constitutive modeling for deformation behavior prediction of lightweight metals: 2 papers (International Journal of Plasticity, JCR Top 5%) published . 1 program registered.|
|Simultaneous improvement of both bonding strength and formability for dissimilar metallic materials: 10 papers published, 9 domestic patent registered.|
Major Research Area
|Development of precision warm forming process for microstructure control of steel driving components.|
|Prediction of high temperature deformation behavior of hardly deformable high strength material and development of plastic deformation process.|
|Development of cold drawing process for the high-strength stainless steel and multi-component alloys.|
|Development of precision forming technology for lightweight metals (Al, Mg and Ti) with new constitutive modeling.|
|Design and analysis of electromagnetic forming and joining process.|
|Development of the roll bonding process for dissimilar metallic materials together with simultaneous improvement of both bonding strength and formability|
|Development of design and manufacturing process for lightweight and multi-functional periodic cellular metals(PCM).|
|Development of porous structure based materials by additive manufacturing technology.|
Future Research Plan
- Development of forming process by controlling yield ratio of high strength material.
- Development of heat-assisted sheet metal forming technology and thermo-mechanical constitutive modeling for large size automotive parts of lightweight metals (Al, Mg and Ti).
- Development of high efficient electromagnetic forming system for application of automotive parts.
- Development of active friction control ultrasonic vibration forming technology.
- Development of double point incremental forming technology for 4 th industrial evolution.
- Development of the deformation-induced large-scale bonding technology between dissimilar metals or metal/inorganic materials.
- Development of additive manufacturing technology for customized medical and industrial products.
Major R&D Activities
Development of electromangetic forming and joining technology for aluminum tube.
- Development of high speed forming and joining technology for aluminum tubes using the electromagnetic force. The processes consolidation of forming and joining for cost-effective fabrication of the automotive member parts.
- Simultaneous forming and joining of aluminum tubes using electromagnetic forming system (EMFS) of a energy capacity of 120kJ.
- Fabrication of a helix type coil actuator for joining the sheet tube.
- Process design of electromagnetic forming and joining using electromagnetic-mechanical-thermal coupled 3-D multiphysic numerical simulation.
Development of the roll bonding process for dissimilar metallic materials together with simultaneous improvement of both bonding strength and formability
- Development of roll bonding process between metallic glass/titanium and high-strength aluminum sheets whose width and length are more than 150 mm and 300 mm, respectively.
- Development of forming technology for the Al/Ti clad sheets exhibiting bonding strength of 26.92 N/mm without interface defect and brittle intermetallic compounds.
Design and fabrication of lightweight & multi-functional PCM(Periodic Cellular Material) having high-strength and heat-dissipation capability
- PCM (Periodic Cellular Material), which consists of regularly arranged unitcells, is an excellent multi-functional material with high specific stiffness/strength, impact energy absorbing ability, and thermal management ability. This study aims to develop the design and fabrication technology of PCM for electric automobile parts.
- Development of design and fabrication technology of PCMs with relative density of 5% or less, normalized compressive strength of 0.3 or more.
- PCM crashbox with 10% higher SEA(specific energy absorption) than Al foam.
- Hybrid PCM sandwich panel consist of steel core and aluminium facesheet.