LNG船用のアルミ合金と鋼の爆着継手(アルミ合金/チタン/鋼)の材料強度特性について

概要

論文の詳細を見る
Aluminum alloy is essential to ship hull members, in order to decrease hull weights or to guarantee against cryogenic brittle fracture and so on. Except an all aluminum alloy craft, however, in the connection between steel and aluminum alloy was inevitable such as bolts or rivets, because of the unweldability of usual arc weld between these metals. Recently, a new joint called explosive bonding has been just prevailing in ship structural members. Namely, using the cruciform joint with the explosive bonded piece as an insert plate, or structural transition joint (STJ), common welding such as MIG, SAW etc. can be available just like as an usual way of welding between similar metals. Consequently it gains more efficiencies in yard productivities etc.. The explosive type STJ of aluminum alloy and steel is often used to the skirt member in the spherical tank system of MRV type LNG carrier. Investigation of the STJ's mechanical properties and material strength have already performed by the STJ committee. However, the thicker STJ is adopted to the skirt compared to that of the STJ committee. And the large heat input is required to the welding with the adjacent plates. In these circumstances, the authors have investigated on the fundamental properties of the STJ in LNG tank skirt, including the fracture mechanics characteristics. As an results, these STJ are proved to have sufficient tensile strength as an skirt member. Also these are verified to be capable of preventing the initiated fatigue cracks to grow unstable fast fracture, in the service life of LNG carrier.
1983-08-24

LNG船用のアルミ合金と鋼の爆着継手(アルミ合金/チタン/鋼)の材料強度特性について

スポンサーリンク

概要

著者

関連論文

スポンサーリンク