Current Search: Sablok, Anil Kumar. (x)
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Title
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Fatigue of high strength steels in sea water.
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Creator
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Sablok, Anil Kumar., Florida Atlantic University, Hartt, William H., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
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Abstract/Description
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Fatigue response of selected high strength steels in seawater was investigated under conditions relevant to tension leg platform tendon applications. This involved both freely corroding and cathodically protected, displacement controlled experiments upon constant taper, bending specimens which were either notched or welded, ground and post weld heat treated. High stress range freely corroding results indicated enhanced life compared to structural steel, whereas at low stress range the...
Show moreFatigue response of selected high strength steels in seawater was investigated under conditions relevant to tension leg platform tendon applications. This involved both freely corroding and cathodically protected, displacement controlled experiments upon constant taper, bending specimens which were either notched or welded, ground and post weld heat treated. High stress range freely corroding results indicated enhanced life compared to structural steel, whereas at low stress range the opposite was true. Corrections made to the high strength steel and structural steel data to correspond to similar test conditions revealed no benefit of enhanced material strength on corrosion fatigue life. Fatigue life for all cathodically protected specimens exceeded that for the freely corroding ones, and with one exception testing was terminated prior to failure. The single cathodically protected specimen failure involved a stress range approximately one-third the value for other specimens which were run-outs. This suggests that an environmental cracking process may operate precipitously at relatively low stress amplitudes (alternately, high R values). Fatigue life for freely corroding notched specimens was less than for grounded PWHT specimens, the difference increasing with decreasing amplitude.
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Date Issued
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1988
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PURL
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http://purl.flvc.org/fcla/dt/14463
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Subject Headings
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Steel--Fatigue, Steel, High strength
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Format
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Document (PDF)
