Journal of Ocean Engineering and Technology (한국해양공학회지)
- Volume 1 Issue 2
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- Pages.113-122
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- 1987
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- 1225-0767(pISSN)
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- 2287-6715(eISSN)
A study on the characteristics of corrosion-fatigue-crack propagation in the welded parts of high tensile steels under sea water
고장력강 용접부의 해수중 부식피로균열 성장특성에 관한 연구
Abstract
Ships and offshore strrctures are exposed to the corrosive surroundings, and the extablishment of the design criteria and the elucidation on the influence by this environment are requested to maintain the safety and to demonstrate the function of the structure. In this paper, the fatigue-crack-growth behavior on the compact tension specimens of quenched, tempered HT80 grade steels and RA36 high tensile steels having a single edge fatigue cracked notch respectively, were investigated under the repeated tensile stress with constant stroke in sea water for the welded parts by shielded metal arc welding. Main results obtained are summerized as follows; 1. The fatigue-crack-growth rates da/dN in sea water appeared to be greater behavior than those in air environment at the same stress intensisy factor range
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