小型船舶用新材料の特性に関する研究

概要

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Recently, PWC (Personal Water Craft) is remarkably improved in performance and its market is expanding rapidly. For the mass production of PWC, SMC (Sheet Molding Compound) came to be used as the construction material of PWC hull. Since SMC is suitable for molding, the manufacturing process of the hull becomes much simpler than that of by hand-layup. Besides of SMC, new materials such as acrylic resin for small vessels, polyolefin for folding vessels and etc. are used, nowadays. However, the strength of these new vessels is confirmed only by the drop test based on "Special Rules for PWC". This test is considered to be insufficient for flotsam collision and severe bottom slamming during high-speed cruising. It is necessary to grasp and verify the dynamic properties of the new materials to impact loads and the resulting fatigue. In this research, the strength of SMC and polyolefin to the static and the dynamic loads have been studied. The complex hull form and permanent set were also considered to evaluate the strength. Based on the study, the authors proposed the appropriate indices for the inspection of the vessels made of the new materials.
独立行政法人海上技術安全研究所の論文
2003-05-31