Laser Welding Method, Laser-Welded Joint, Outside Sheathing Panel, and Body Structure for Rolling Stock

摘要

A side construction 302 has an outside sheathing 306 and outside sheathing reinforcement members 307 A and 307 B joined to the outside sheathing 306 interiorly of the outside sheathing 306 . The reinforcement member 307 A ( 307 B) is shaped like a hat in section. The reinforcement members 307 A provided in the vicinity of a window opening portion have a laser welding spacing L 1 of 80 mm and each have a hat width of 50 mm, while the reinforcement members 307 B provided on other part have a laser welding spacing L 1 of 100 mm and each have a hat width of 70 mm. The reinforcement members 307 A and 307 B each have a height of 25 mm.