船体用隅肉溶接部の静的強度に及ぼす腐食衰耗の影響

抄録

Corrosion of structural members of ships is one of the main problems for ship safety. In this report static strength of corroded fillet welded joints for ship structure is investigated with experimental result using actual materials taken from old ships and corrosion-simulated specimens. Tensile strength, bending strength, parallel shear strength and normal shear strength of corroded fillet welded joints are obtained. Size-ratio of web-thickness to throat-thickness of weld-bead is an important factor for fracture mode, that is, web fracture and weld-bead fracture, of corroded fillet welded joints. And also failures of hold frames in bulk carriers are discussed with result of this study.