STP770: Fatigue Behavior of Carbon Steel Components in High-Temperature Water Environments

    Ranganath, S
    Manager, Stress and Fracture Analysis Unit; Manager, Plant Materials and Experimental Mechanics Unit; and Principal Engineer and Technical Leader, General Electric Company, Nuclear Energy Engineering Division, San Jose, Calif.

    Kass, JN
    Manager, Stress and Fracture Analysis Unit; Manager, Plant Materials and Experimental Mechanics Unit; and Principal Engineer and Technical Leader, General Electric Company, Nuclear Energy Engineering Division, San Jose, Calif.

    Heald, JD
    Manager, Stress and Fracture Analysis Unit; Manager, Plant Materials and Experimental Mechanics Unit; and Principal Engineer and Technical Leader, General Electric Company, Nuclear Energy Engineering Division, San Jose, Calif.

    Pages: 24    Published: Jan 1982


    Abstract

    This paper describes the results of a combined experimental/analytical program on the fatigue initiation behavior of carbon steel components. Based on this study, several improvements in the fatigue analysis procedures are suggested: (1) a notch factor for local strains, (2) a mean stress factor, (3) improved fatigue strength reduction factor for butt welds, and (4) an environmental correction factor. It is shown that with the suggested fatigue analysis procedures, the fatigue design margins of the ASME Code will be maintained even with unusually severe local strain and mean stress.

    Keywords:

    carbon steel, fatigue analysis, ASME Code, environmental effects, local strain, mean stress effect, piping design


    Paper ID: STP32440S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP32440S


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