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Analysis of crack retardation effects and crack path in ship structure members on different routes

Fredhi Agung Prasetyo ; Wengang Mao (Institutionen för sjöfart och marin teknik, Marine Design) ; Tomohei Kobayashi ; Naoki Osawa ; Jonas Ringsberg (Institutionen för sjöfart och marin teknik, Marine Design)
Proceedings of the Thirteenth International Conference on Fracture (ICF13) in Beijing, China, June 16-21, 2013 p. 9. (2013)
[Konferensbidrag, refereegranskat]

The ship size has been rapidly increased in recent years. Consequently, many aspects of ship structural safety have been concerned, i.e. fatigue strength. Since fatigue cracks are found in the early stage of a ship’s service life, it might be that the classical cumulative fatigue rule is insufficient to consider the effects of many uncertain factors, such as variable wave environment loads. The wave load history hinges on the short-sea history. It means that the accuracy of fatigue assessment is affected by the used wave model. There are several established wave models, which could be used to simulate wave load history as in the real ocean conditions. In this paper, wave load histories of a 2800TEU container ship are generated by two different wave models. It is used for crack propagation analysis in the changing routes and trades. The result in the simulated crack propagation lives is examined and discussed.

Nyckelord: Fatigue crack propagation, fatigue damage sensor, hindcast data, ship structures

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Denna post skapades 2013-06-17. Senast ändrad 2013-09-05.
CPL Pubid: 178703


Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Marine Design (2012-2014)


Hållbar utveckling
Innovation och entreprenörskap (nyttiggörande)
Matematisk analys
Matematisk statistik
Teknisk mekanik

Chalmers infrastruktur