Ultimate strength of corroded web-core sandwich beams

被引：23
|
作者：
Jelovica, J. [1 ]
Romanoff, J. [1 ]
Ehlers, S. [2 ]
Aromaa, J. [3 ]
机构：
[1] Aalto Univ, Dept Appl Mech Marine Technol, Aalto 00076, Finland
[2] Norwegian Univ Sci & Technol, Dept Marine Technol, N-7491 Trondheim, Norway
[3] Aalto Univ, Dept Mat Sci & Engn, Aalto 00076, Finland
来源：
MARINE STRUCTURES | 2013年 / 31卷
关键词：
Web-core sandwich; Ultimate strength; Corrosion; Three-point bending; Stress-strain; CORROSION;
D O I：
10.1016/j.marstruc.2012.12.001
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：
The corrosive marine environment is a threat to the ultimate strength of steel sandwich structures. Therefore, ultimate strength experiments were carried out in three-point bending for beams with different corrosion exposure times, i.e. one and two years. Standard laser-welded web-core sandwich beams are studied and different corrosion protection systems are considered. The beams experienced general corrosion. The thickness reduction in unprotected plates and laser welds is around the typical 03 mm/year. This led to an ultimate strength reduction of 10% and 17% for beams with exposure times of one and two years, respectively. The experimental ultimate strength is in agreement with finite element simulations. The ultimate strength was maintained for the beams protected with coating or closed-cell polyurethane (PU) foam. (C) 2012 Elsevier Ltd. All rights reserved.
引用
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页码：1 / 14
页数：14
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