ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Pitting corrosion is a great concern when the integrity of ship's hull structures is considered.Corrosion pits with a conical shape are typically observed on coated hold frames in way of cargoholds of bulk carriers which exclusively carry coal and iron ore. Therefore, it is important toinvestigate the effect of pitting corrosion on local strength of hold frames of bulk carriers. In thepresent study, a series of 3-point bend tests with structural models which consist of web, shell andface plates has been conducted. In these tests, a concentrated load has been vertically applied at thecenter of simply supported models so that shear load would act on the web plate with artificial pits. Inthis testing condition, load increased even after shear buckling occurred. When there is artificialpitting, fracture of web plates occurs due to strain concentration at the pits. It has been revealed thatthe empirical formula, which was developed based on non-linear FE-analyses, overestimates theequivalent thickness for the shear ultimate strength obtained in the present experiment, because theeffect of web fracture is not taken into account in the analyses
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.489.pdf
