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    Volume 44, Issue 1 (January 2016)

    Special Issue Paper

    Approximation Algorithms of Crack Growth Rate Curve Based on Crack Size Variations

    (Received 4 January 2015; accepted 30 April 2015)

    Published Online: 28 January 2016

    CODEN: JTEVAB

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    Abstract

    Procedures for obtaining da/dN-ΔK curve on the basis of empirical a-N data were shown. Estimating approaches of crack growth rates for constant, block, variable amplitude, and similar loading were given. Computational methods of equivalent load range Peqv, required for ΔK approximation in case of variable amplitude loading and plotting of a da/dN-ΔK chart, were presented. Advantages and disadvantages of suggested methods were also described. The application of approximation methods for da/dN-ΔK curve determination was imposed in case of constant amplitude loading and for modified SAESUS loading.


    Author Information:

    Savkin, A. N.
    Professor of the Strength of Materials Department, Volgograd State Technical Univ., Volgograd,

    Andronik, A. V.
    Ph.D. Student, Strength of Materials Department, Volgograd State Technical Univ., Volgograd,

    Koraddi, R.
    Software Team Lead, BISS-ITW, Bangalore,


    Stock #: JTE20150001

    ISSN:0090-3973

    DOI: 10.1520/JTE20150001

    Author
    Title Approximation Algorithms of Crack Growth Rate Curve Based on Crack Size Variations
    Symposium ,
    Committee E08