15. Some Observations on the Evaluation of Ship's Service Life

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概要

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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 financial merit in ship life extension. The authors investigated the factors for proper ship life in basic and fundamental aspect, and confirmed that it should be taken heade to link the factors together. The points 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.

• 社団法人日本船舶海洋工学会の論文

著者

• Matoba M

  Univ. Tokyo

• Machida S

  Osaka Univ.

• Machida Susumu

  Dept. Naval Architecture & Ocean Engineering University Of Tokyo

• Machida Susumu

  Dept. Naval Archit. & Ocean Eng. The University Of Tokyo.

• MATOBA Masaaki

  Dept. of Naval Archit. & Ocean Engg. Faculty of Engl, The Univ. of Tokyo

• YOSHINARI Hitoshi

  Dept. of Naval Archit. & Ocean Engg. Faculty of Engl, The Univ. of Tokyo

• NIIMURA Yutaka

  Dept. of Naval Archit. & Ocean Engg. Faculty of Engl, The Univ. of Tokyo

• Niimura Yutaka

  Dept. Of Naval Archit. & Ocean Engg. Faculty Of Engl The Univ. Of Tokyo

• Yoshinari Hitoshi

  Dept. Naval Architecture & Ocean Engineering University Of Tokyo

• Yoshinari Hitoshi

  Dept. Of Naval Archit. & Ocean Engg. Faculty Of Engl The Univ. Of Tokyo

関連論文

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• 12. Reliability Analysis of Fatigue Damage of Offshore Structure

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