• Proceedings of the KWS Conference
• /
• 2004.05a
• /
• pp.92-94
• /
• 2004

선박 건조 시 적용되는 여러 가지 용접기법 중 가장 많이 적용되는 기법 중 하나가 FCA용접 (Flux Cored Arc Welding)이다. 일반적으로 100% $CO_2$ 가스를 사용하고, 플럭스 코어드 와이어를 사용하여 자동 또는 반자동 용접에 적용한다. (중략)

• Proceedings of the KWS Conference
• /
• 2007.11a
• /
• pp.82-84
• /
• 2007

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2011.06a
• /
• pp.499-500
• /
• 2011

• Journal of Welding and Joining
• /
• v.12 no.4
• /
• pp.151-161
• /
• 1994

FCAW has wide application in ship fabrication, maintenance and field erection. It has many advantages over SMAW.SAW and GMAW process. In many applications, the FCAW provides highquality weld metal. This method can reduce weld defects especially porosity and spatter. But the fatigue characteristics of those deposited metal have been rarely investigated. The purpose of this study is to investigate the cyclic stress-strain behavior and fatigue tests by the constant strain control were carried out on the rounded smooth specimen with deposited metal using the metal type flux cored wire. As the results of this study for the deposited metal welded by the metal type flux cored wire, the hardening or softening characteristics under cyclic load were investigated and cyclic stress-strain curve, strain-fatigue life curve, stress-strain function and fatigue life relation which are useful to estimate the fatigue life under the stress concentration condition were obtained.

• Proceedings of the KWS Conference
• /
• 1999.10a
• /
• pp.66-69
• /
• 1999

• Proceedings of the KWS Conference
• /
• 2001.05a
• /
• pp.27-30
• /
• 2001

• Proceedings of the KWS Conference
• /
• 2005.06a
• /
• pp.150-151
• /
• 2005

• Proceedings of the KWS Conference
• /
• 2001.10a
• /
• pp.236-238
• /
• 2001

• Proceedings of the KWS Conference
• /
• 2001.10a
• /
• pp.56-59
• /
• 2001

• Proceedings of the KWS Conference
• /
• 2005.06a
• /
• pp.69-70
• /
• 2005

In order to prevent the arc blow at the FCA welding system with multi-torches, the effects of arc length on the magnetic flux at the FCA weldment was evaluated using electro-magnetic filed analysis. Magnetic flux density around arc are slightly increased with an increase in the arc length. Based on the FEA results, the minimum distance of torches to control arc blow was established.