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Evaluation of Fatigue Strength Share Effect of the Rust Due to Corrosion at Ship Structural Plate

선체구조 판부재에서 해수부식현상에 기인하는 부식층의 피로강도분담효과에 관한 연구

  • Kim, Won Beom (Department of Naval Architecture and Ocean Engineering, School of Digital Mechanics, Ulsan College)
  • 김원범 (울산과학대학교 디지털기계학부 조선해양전공)
  • Received : 2013.02.04
  • Accepted : 2013.05.09
  • Published : 2013.05.31

Abstract

Ship and offshore structures, those are to be used under the seawater conditions are prone to corrosion. In this research, the effect of rust existence on the fatigue strength at structural member of ship and offshore structure was investigated. For this purpose, fatigue tests for the rust removed specimen were conducted. In addition, the comparison of fatigue strength between rust removed specimen and rusted specimen was conducted. With these test results, fatigue strength share effect was investigated. Finally, at this research, it was found that there is fatigue strength share effect on the rust. In comparison of fatigue strength reduction factor, fatigue strength of the rust removed specimen is 18.1% lower than that of the rusted specimen. From the above, it was known that as far as there are not any harmful ingredients in it, rust on the steel plate is beneficial in an aspect of fatigue strength.

Keywords

Fatigue Strength;Fatigue Strength Reduction Factor;Corrosion;Rust

References

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