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Journal of KWJS 2005;23(1):55-60.
Published online April 29, 2005.
[연구논문] 레이저 키홀 용접의 열원 모델링 : Part 2-간극과 두께 차이의 영향
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Heat Source Modeling of Laser Keyhole Welding : Part 2-Effects of Gap and Thickness Difference
Jae-Young Lee, Won-Beom Lee, Choong-Don Yoo
Abstract
A three-dimensional Gaussian heat source model is modified to include the effects of the gap and thickness-difference for the laser keyhole welding. The gap of the butt joint influences the welding efficiency such that the melting area decreases linearly with the gap. When the different plate thickness is used such as the tailored blank welding, melting areas of the thick and thin plates are predicted by introducing the thickness-difference factor. The calculated results using the modified heat source show reasonably good agreements with the experimental results.


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