An Effective Stress Parameter for Long-Term Fatigue Strength of Fiber-Reinforced Plastic Pipes

    Volume 18, Issue 3 (July 1996)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 6


    Chiu, AS
    Exxon Research and Engineering Company, Florham Park, NJ

    Kujawski, D
    University of Alberta, Edmonton, Alberta

    Ellyin, F
    University of Alberta, Edmonton, Alberta

    Abstract

    The currently used American Society for Testing and Materials (ASTM) procedure and a modified American Petroleum Institute (API) method for cyclic pressure strength of fibre reinforced plastic (FRP) pipes are critically discussed together with the test results generated by Battelle. In addition, two new damage parameters, recently proposed by the authors, are examined using the Battelle tests as a database. An equivalent stress range damage parameter, Δ¯σ, is recommended which combined the loading condition, hoop stress range and normalized mean stress, and FRP pipe material properties. The proposed damage parameter, Δ¯σ, can be used in the engineering evaluation of fatigue performance of pressured fiberglass pipes. The Δ¯σ provides substantial improvement over the ASTM recommended parameter, hoop stress range. Using the Δ¯σ, the fatigue data for different mean pressures are consolidated into a narrow scatter band.


    Paper ID: CTR10533J

    DOI: 10.1520/CTR10533J

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    Author
    Title An Effective Stress Parameter for Long-Term Fatigue Strength of Fiber-Reinforced Plastic Pipes
    Symposium , 0000-00-00
    Committee D30