• Journal of Welding and Joining
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• v.21 no.5
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• pp.479-481
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• 2003

• Journal of Welding and Joining
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• v.21 no.6
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• pp.1-2
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• 2003

• Journal of Welding and Joining
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• v.22 no.1
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• pp.7-9
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• 2004

• Journal of Welding and Joining
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• v.22 no.1
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• pp.18-25
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• 2004

• Journal of Welding and Joining
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• v.22 no.1
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• pp.26-31
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• 2004

• Journal of Welding and Joining
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• v.24 no.3
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• pp.15-21
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• 2006

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2007.05a
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• pp.361-363
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• 2007

The light weight aluminum subframe for automobile chassis part was developed using hybrid process, i.e. extruforming, press stamping and MIG welding. To achieve a 30 % weight reduction compared with conventional steel subframe keeping satisfactory performance, the design of cross-section of extruforming part was introduced, then forming simulation was performed and the final design was determined. In addition, we tried to estibilish optimun aluminum welding conditions for good penetration depth and few pore defact, finally the prototype of aluminum subframe was assembled using MIG welding method.

• Proceedings of the KWS Conference
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• 2008.05a
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• pp.30-30
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• 2008

• Proceedings of the Korean Information Science Society Conference
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• 2012.06b
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• pp.48-50
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• 2012

Migrating and enhancing welding system into smart device based system is one of most important issues in ship manufacturing and maritime plant industries. In this paper, we propose and discuss the design and development of software architecture for smart welding system. Firstly, we introduce hybrid app development environments, because hybrid app development is more efficient and developer-friendly than native app development. Secondly, we show an essential subset of potential screen shots, software architecture diagrams and data flow diagrams(DFD) for our smart welding system proposal. Finally, we conclude the discussion of design choices and future work.

• Journal of the Microelectronics and Packaging Society
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• v.26 no.4
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• pp.1-6
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• 2019

Recently, as electric vehicles and hybrid vehicles are widely used, the use of rechargeable batteries is increasing. Electric and hybrid cars are made up of hundreds to thousands of electric cells depending on the car model. And the assembly process of the cells and modules requires a variety of bonding process. Meanwhile, in order to connect several cells in series, Cu used as a cathode and Al of an anode must be bonded. In this paper, the characteristics of Al and Cu metals, laser types, characteristics and principles of welding lasers for welding of Cu and Al electrodes are introduced.