Titanium is suitable for the material of ship hull structures because of its high specific strength responding to highspeed demanding and high corrosion resistance in marine environment. In Japan, CP titanium plates have been already used for the structural members of fishing boats. However, there is no application of the structural members of merchant or government ships where the authorized standard is strict, because there is no suitable rule or recommendation for welded built-up titanium plate structures. Additionally, there is little research concerned with the fatigue strength of titanium fillet welded joints that are indispensable to ship structure. In this study, for promoting the development of titanium ships, the fatigue tests of butt-welded joints, transverse fillet welded joints and longitudinal fillet welded joints were carried out. As a result of mentioned above, the effectiveness of the fatigue strength of steel was investigated for designing on the safety judgment of titanium-welded joints. Good correlation was achieved between the fatigue test results obtained from three types of welded joint relevant to ships that fail from the weld toe, using a modified version of the equivalent stress defined in MIL-HDBK-5. Furthermore, similar results were obtained for base metal failure.
Fatigue strength of CP grade 2 titanium fillet welded joint for ship structure
Dauerfestigkeit von Titan-Kerbnahtschweißenverbindungen für Schiffbaustrukturen
Welding in the World ; 48 , 7/8 ; 40-47
2004
8 Seiten, 7 Bilder, 5 Tabellen, 4 Quellen
Aufsatz (Zeitschrift)
Englisch
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