An Investigation on Fatigue in High-Strength Steel Offshore Structures

Henning Agerskov, R.I. Petersen, L. Lopez Martinez

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

    Abstract

    In the present investigation, the fatigue life of offshore steel structures in high-strength steel is studied. The material used has a yield stress of 800-1000 MPa, and high weldability and toughness properties. Of special interest is the fatigue life under a realistic stochastic loading. In the experimental part of the investigation, fatigue test series have been carried through on both full-scale tubular joints and smaller welded plate test specimens, in high-strength steel as well as in conventional offshore structural steel. The present document gives a summary of the main results presented in two recent research reports, Refs. 15 and 16, from these investigations.A comparison between constant amplitude and variable amplitude fatigue test results shows shorter fatigue lives in variable amplitude loading than should be expected from the linear fatigue damage accumulation formula. Furthermore, in general longer fatigue lives were obtained for the test specimens in high-strength steel than those obtained in corresponding tests on joints in conventional offshore structural steel.
    Original languageEnglish
    Title of host publicationAn Investigation on Fatigue in High-Strength Steel Offshore Structures
    Place of PublicationParis, Frankrig
    PublisherInternational Institute of Welding
    Publication date1997
    Pages1-22
    Publication statusPublished - 1997
    Event50th Annual Assembly International Institute of Welding - San Francisco, CA, United States
    Duration: 13 Jul 199718 Jul 1997

    Conference

    Conference50th Annual Assembly International Institute of Welding
    CountryUnited States
    CitySan Francisco, CA
    Period13/07/199718/07/1997

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