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    Volume 29, Issue 6 (November 2001)

    Yield Strength in Relation to Cyclic Loading

    (Received 8 December 2000; accepted 6 July 2001)

    Published Online: 01 November 2001


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    The yielding phenomenon under cyclic loading has been investigated for low-carbon steel. Under various loading ratios, the surface state of the specimen was observed with the naked eye, using the Lüders band as an indicator for the yield point elongation. The stress-strain curve was measured simultaneously. The results show that both the surface states and the cyclic stress-strain characteristics vary depending on the load ratio. This makes it questionable to use the yield strength evaluated under monotonic loading to describe the mechanical properties of the specimen material for fatigue tests, though it is a prevailing practice recommended by ASTM. The result of this study also indicates that the Lüders band can be used as a smart sensor to investigate the yield phenomenon.

    Author Information:

    Ichinose, K
    Professor and head, Tokyo Denki University, Tokyo,

    Fukuda, K
    Research associate, Graduate School of Engineering, The University of Tokyo, Tokyo,

    Gomi, K
    Research associate, Tokyo Denki University, Tokyo,

    Taniuchi, K
    A former professor, Meiji University,

    Sano, M
    Student of Master Course, Graduate School of Engineering, Tokyo Denki University, Tokyo,

    Stock #: JTE12398J


    DOI: 10.1520/JTE12398J

    Title Yield Strength in Relation to Cyclic Loading
    Symposium ,
    Committee A01