水中翼用15-5PHステンレス鋼の疲労強度

概要

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The strength of the foil structure used in the hydrofoil craft was required not only high grade strength property but also structural strength reliability in the severe sea conditions. The hydrofoil was designed as a welded hollow structure of high strength and corrosion resistant stainless steel to minimize the weight of the foil structure. The material chosen for the foil was a precipitation-hardening corrosion resistance steel of 15-5PH specified in AMS 5659G (SAE 1990). In order to complete the development the foil structure, welding method and the corresponding welded joint characteristics including fatigue strength in seawater condition was also studied, together with the heat treatment conditions. This paper presents the results of fatigue strength properties of 15-5PH stainless steel and its welded joints.
社団法人日本船舶海洋工学会の論文
2000-03-29