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http://dx.doi.org/10.3744/SNAK.2003.40.3.054

An Experimental Study on Corrosion Fatigue Strength of TMCP Steel in Consideration of NaCl Salinity  

강성원 (부산대학교 조선해양공학과)
김철현 (부산대학교 조선해양공학과)
이해우 (삼성중공업 조선플랜트 연구소)
Publication Information
Journal of the Society of Naval Architects of Korea / v.40, no.3, 2003 , pp. 54-60 More about this Journal
Abstract
Fatigue strength of offshore structures or ship structures is significantly decreased due to corrosive environment condition such as sea water and/or coal, crude oil of cargoes, compared to that of on shore structures. In corrosive environment, fatigue strength of structures also depends on characteristics of weld material heat affected zone(HAZ). In this research work, rotary bending fatigue tests of parent material and HAZ of TMCP steel were performed in order to investigate the initiation and propagation of cracks both in air and in NaCl solution. Comparison of fatigue strength In relation with the salinity of NaCl were carried out as well. According to the test results weld material or HAZ of TMCP steel showed higher fatigue strength than that of the parent material. The fatigue strength of TMCP steel decreases drastically in NaCl solution compared to that of in air environment. In particular, more reduced fatigue strength is observed in 1% NaCl solution than in 3% NaCl solution.
Keywords
Corrosive environment; Corrosion fatigue; TMCP steel; Fatigue crack;
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1 한상복, 강영실, 정희동 외 6명, 1998, "한국 근해 30년 평균 수온 염분 용존산소 수평분포도", 국립수산진흥원, pp. 1-9, 141-154
2 백점기, 박영일, 1998, “유조선 종강도 부재의 확률론적 부식속도 예측모델의 개발”, 대한조선학회 논문집, 제35권 제2호, pp. 83-93   과학기술학회마을
3 N. Yurioka, 1992, "Welding of TMCP Steels", JWS, Vol. 61, No. 4, pp. 50-66
4 Y. Maeda, A. Ohta, N. Suzuki, 2001 “Fatigue Properties in Synthetic Sea Water by ${\sigma}_{max}={\sigma}_y$ Testing Method“, Quar. J. JWS, Vol. 19, No. 2, pp. 360-364
5 한문식, 1993, “대형 구조물의 파괴강도 특성 평가 기술에 관한 연구”, 대한조선학회논문집, 제30권 제4호, pp. 102-111   과학기술학회마을
6 강성원, 이승윤, 2000, “$CO_{2}$ 용접이음재의 대기 및 해수중에서의 회전굽힘 피로강도에 관한 연구”, 대한조선학회 논문집, 제37권 제2호, pp. 118-126   과학기술학회마을