About TOKUNAGA MASATOSHI
About 住友金属工業
About FUJIMOTO HIROKI
About 住友金属工業
About YASUYAMA MASANORI
About 住友金属工業
About UCHIHARA MASATO
About 住友金属工業
About 溶接学会全国大会講演概要
About steel plate
About thin plate
About laser welding
About solidification cracking
About sensitivity
About Weld defect
About 薄板
About レーザ溶接
About 凝固割れ
About 研究
About 試験法
About 割れ感受性
About 評価