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On the application of Gatts equation to the description of fatigue curve

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Strength of Materials Aims and scope

The peculiarities of the Gatts function in the description of fatigue curve have been analyzed for the welded joint of structural low-carbon steel and structural alloyed steel 30KhGSA as an example. It has been shown that the parameter (1–C) = 0.5 in the known equation of fatigue curve has limited application. Simplified methods for the calculation of Gatts equation parameters both for known and unknown physical endurance limit are presented. A method of successive approximations on the basis of test data both at two stress levels and the minimum mean-square deviation of durability logarithm and at three stress levels and mean durabilities corresponding to them is proposed for the determination of endurance limits of materials and structural elements.

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References

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Authors and Affiliations

  1. Pisarenko Institute of Problems of Strength, National Academy of Sciences, Kiev, Ukraine

    B. S. Shul’ginov

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  1. B. S. Shul’ginov
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Specimens were tested at the Timoshenko Institute of Mechanics of the National Academy of Sciences of Ukraine.

Translated from Problemy Prochnosti, No. 6, pp. 140 – 150, November – December, 2009.

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Shul’ginov, B.S. On the application of Gatts equation to the description of fatigue curve. Strength Mater 41, 699–707 (2009). https://doi.org/10.1007/s11223-009-9176-6

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  • DOI: https://doi.org/10.1007/s11223-009-9176-6

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