| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Research Abstract |
The objectives of this research are clarification of fundamental phenomena and development of smart process in ultra-high-power-density fiber laser welding. As for the fundamental clarification, the laser absorption of SUS304 stainless steel achieved 80% and the absorption mechanism was revealed on the basis of X-ray high-speed pictures of the keyhole. With respect to smart process, laser adaptive control applied for continuous-wave fiber laser welding. Consideration of thermal storage effects led to success of stable sound welds at acceleration or deceleration in welding speed.
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