STP1140

    The FATDAC Code for Fatigue Database Analysis

    Published: Jan 1992


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    Abstract

    The FATDAC code, an interactive, modular, menu-driven computer program was developed to interface directly with a database for the analysis of fatigue and corrosion fatigue data. The code provides a variety of analysis techniques to solve problems inherent in fatigue databases. The solutions include: (1) an optimization process which minimizes the numerical scatter in da/dN that arises from differentiation of (a,N) data, (2) a feature for combining data from many investigators while taking into account the varying amount of crack extension or life represented by each point, and (3) weighted least squares techniques for fitting standard or user-defined models to (da/dN,ΔK).

    Keywords:

    fatigue, database, optimization, modeling, scatter, computer code


    Author Information:

    Andrew, SP
    Senior Engineer, Failure Analysis Associates, Inc., Menlo Park, California

    Eason, ED
    Principal, Modeling and Computing Services, Newark, California

    Warmbrodt, SB
    Engineer, Failure Analysis Associates, Inc., Menlo Park, California


    Paper ID: STP23766S

    Committee/Subcommittee: E49.52

    DOI: 10.1520/STP23766S


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