著者

町田 進 的場 正明 吉成 仁志 新村 豊

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1990, no.168, pp.605-614, 1990 (Released:2009-09-16)

参考文献数

13

被引用文献数

1

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Ship life depends on many factors. The factors will be divided into three groups, the law of nature, performance and economy. The laws of nature are mainly fatigue and corrosion which reduce the retained structural toughness in aged ships. The performance factors of social impact will sometimes act key point. For example, marine pollution has a great influence on types of ships. In economy factors, investment and its recovery are basic ones that should be analyzed, and cost sensitivity of each of the factors should be analyzed on the point of effect on life. And some investigations show low finantial merit in ship life extention. The authors investigated the factors for proper ship life in basic and fundamental aspect, and confirmed that it should be taken heads to link the factors together. The points to be cleared in engineering point of view are the properties of corroded plates, and some results show very low fatigue strength and fracture toughness that warn low strength redundancy of aged ships.

著者

町田 進

出版者

公益社団法人 日本船舶海洋工学会

雑誌

造船協会誌 (ISSN:03861503)

巻号頁・発行日

vol.419, pp.250-259, 1964

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本論文では各種の高張力鋼, Al合金, Ni合金, Cu合金についてたわみ量一定の両振り(R=-1)曲げ試験を行ない, 荷重波形, 切欠, 溶接, 海水腐食等の諸因子の影響のほか, 有名なCoffinの式の検討を行なっている。