Empirical Relationship Between Pulsating And Filly Reversed Fatigue
Strength Amplitudes
Author(s)
F. Klubberg, H. J Schaefer, M. Hempen & P. Beiss
Abstract
Empirical relationship between pulsating and
fully reversed fatigue strength amplitudes
F. Klubberg, H. J. Schaefer, M. Hempen & P. Beiss
Institute for Materials Science (IWK),
R WTH Aachen University, Aachen, Germany
Abstract
The fatigue behavior of metallic materials is significantly influenced by superimposed
static mean stresses, which must be taken into account in service life
calculations or in structure design. This requires a suitable engineering rule to
estimate the allowable stress amplitude for any non-zero mean stress. Traditionally,
the drop of endurable amplitude with increasing mean stress is approximately
calculated from the so-called mean stress sensitivity, which is believed to
be a linear function of the tensile strength. In this paper it is shown that a power
law between fully reversed and pulsating stress amplitudes is much better suited
to predict unknown pulsating tension or bending and torsion amplitudes in the
high cycle fatigue range, including endurance limits, from e
Keywords
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