2013 Fiscal Year Final Research Report
An enhanced method of evaluation for durability of marine structures
| Project/Area Number |
22246109
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Yokohama National University |
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Principal Investigator |
SUMI Yoichi 横浜国立大学, 工学研究院, 教授 (80107367)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAMURA Yasumi 横浜国立大学, 大学院工学研究院, 教授 (50262407)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 船舶工学 / 海上安全 / 長寿命化 / 構造材料 / 海洋工学 |
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| Research Abstract |
Fatigue tests and numerical simulation are carried out under slam-induced whipping stress, so as to clarify the effect of vibratory stress superimposed to wave-induced stress. The effect of residual stress is examined for the fatigue crack propagation under welding residual stress, especially after overloading. The effect of peening is also investigated by fatigue tests. Regarding corroded plates, a numerical method is proposed for the generation of a randomly corroded plate surfaces, and numerical simulation has been carried out for the fracture of corroded plates, which is verified by experiments. Finally, the strength of corroded marine structures is evaluated by a risk-based approach.
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Research Products
(18 results)
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[Journal Article] Fracture control of extremely thick welded steel plates applied to the deck structure of large container ships2013
Author(s)
Y.Sumi, H.Yajima, M.Toyosada, T.Yoshikawa, S.Aihara, K.Gotoh, Y.Ogawa, T.Matsumoto, K.Hirota, H.Hirasawa, M.Toyoda and Y.Morikage
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Journal Title
Journal of Marine Science and Technology
Volume: 18-4
Pages: 497-514
DOI
Peer Reviewed
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