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  • Fatigue life prediction of spring steels using the local stress gradient concept
    Borković, Predrag ; Šuštaršič, Borivoj
    The prediction of the fatigue life of components by calculation is a common step within the design process of machine. This prediction consists of: stresses, loads and strength behavior of the ... material component. Stresses in the component are frequently calculated by means of the finite element method (FEM), while loads are mostly described by means of load spectra. The information about the strength behavior of the material is the third group of input data for the calculation of the fatigue life, which are based on test results and are described by S/N curves. Fatigue tests on notched specimens under compression-tension loading were carried in order to obtain the S/N curves of investigated spring steel. Two groups of specimens were prepared: longitudinal and perpendicular relative to the rolling direction, both with two different tempering temperature. According to obtained fatigue results it is obviously that segregation orientation has an important influence on the fatigue behaviour of the spring steels as well as heat treatment condition.
    Type of material - conference contribution
    Publish date - 2010
    Language - english
    COBISS.SI-ID - 844202