STP1231: Spectrum Fatigue Testing Using Dedicated Software

    Marquis, G
    Research scientists, Technical Research Centre of Finland (VTT) Manufacturing Technology,

    Solin, J
    Research scientists, Technical Research Centre of Finland (VTT) Manufacturing Technology,

    Pages: 16    Published: Jan 1994


    Abstract

    A series of modular spectrum fatigue test control and data collection programs have been developed. Specially tailored modifications of the software are used for different types of tests. Simulated service spectra with predetermined amplitudes and frequencies for one or more control channels can be produced. Simultaneous monitoring of the test machine and specimen response permits run-time analysis of the actual spectrum, measuring of fatigue crack initiation or growth, and speed optimization. The full-scale testing of a locomotive bogie employing eight hydraulic actuators is described. The three-million kilometre service simulation verified the fatigue resistance of the structure. The importance of meaningful run-time analysis is emphasized.

    Keywords:

    spectrum fatigue, spectrum loading, structural testing, locomotive bogie, component testing, fatigue strength verification, fatigue testing software, test automation, fracture(materials), fatigue (materials), testing methods, data analysis


    Paper ID: STP13952S

    Committee/Subcommittee: E08.03

    DOI: 10.1520/STP13952S


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