Fatigue strength of coated steel structures in seawater

被引：0

作者：

Kumakura, Y ^{[1
]}

Onoduka, M ^{[1
]}

Fuji, A ^{[1
]}

Kino, H ^{[1
]}

Tada, M ^{[1
]}

机构：

[1] Kinki Univ, Wakayama, Japan

来源：

PROCEEDINGS OF THE 10TH (2000) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL IV | 2000年

关键词：

corrosion fatigue test; welded joint; tar epoxy resin; structures in ballast tank; stress concentration; residual stress; seawater;

D O I：

暂无

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Fatigue tests were carried out in synthetic seawater on II-type test specimens which simulate the longitudinal structure at the slots of transverse web of ballast tanks of ships. In order to clarify the effect of coating films in seawater, coated specimens with tar epoxy resin were tested under the frequency of cyclic loading of 0.17 Hz simulating the averaged speed of ocean waves. The fatigue lives in seawater decreased in comparison with those in air. In the present paper, the slight effectiveness of coating is considered with the relation to crack initiation behavior due to the high stress concentration and residual stress at the weld toe. Finally, for the design of coated structures in a ballast tank, a treatment idea for welded beads is suggested.

引用

页码：161 / 166

页数：6

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