Low-Cycle Fatigue Analysis of Notched Members

    Volume 17, Issue 4 (July 1989)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 6


    Zhang, D
    Graduate Student and Professor, University of Wisconsin, Madison, WI

    Sandor, BI
    Graduate Student and Professor, University of Wisconsin, Madison, WI

    (Received 18 April 1998; accepted 13 December 1988)

    Abstract

    Low-cycle fatigue crack initiation and propagation lives of notched members are investigated. By relating NciJ/ψρ)β = Cn to the Coffin-Manson equation and correlating to test results, β and Cn are found to be functions of several parameters: cyclic stress-strain constants, geometry of notch (depth and curvature), and stress ratio. (ΔJ/σ′y) is chosen as a parameter for crack propagation in notched members. Fatigue crack initiation and propagation tests were conducted on notched plate specimens of different notch radii and stress ratios. Crack initiation life, crack propagation life, and total fatigue life are compared with the calculations. There are good correlations between the test results and the calculations.


    Paper ID: JTE11116J

    DOI: 10.1520/JTE11116J

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    Author
    Title Low-Cycle Fatigue Analysis of Notched Members
    Symposium , 0000-00-00
    Committee E08