Development of Multifunction Laser Welding Head (2) - Stress Improvement by Laser Peening Technology -
千田 格 Itaru CHIDA 河野 渉 Wataru KONO 三浦 崇広 Takahiro MIURA 向井 成彦 Naruhiko MUKAI 依田 正樹 Masaki YODA
Laser peeningPreventive maintenanceRepairStress corrosion cracking (SCC)
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventive maintenance and laser ultrasonic testing as inspection. By using the effect of color aberration with optics, laser beam was focused to the ideal spot size on each process. Laser p eening was performed on the material surface with the developed head, and stress improvement ability was confirmed.