Note on modelling of fatigue damage rates for non-Gaussian stresses.
Reviewartikel, 2013

This note reviews the means for fatigue damage rates estimation using scaled Laplace distributed loads. The model is suitable for the description of stresses containing transients of random amplitudes and locations. Moment method to estimate model parameters is given. Explicit formulas to compute rainflow damage rate as a function of excess kurtosis are presented. Laplace model is used to describe the variability of forces measured at some location on a cultivator frame. Validation of the model and uncertainty analysis in fatigue damage predictions is given.

rainflow cycles

time-scaled loads

Laplace moving averages

cultivator loads


Igor Rychlik

Chalmers, Matematiska vetenskaper, Matematisk statistik

Göteborgs universitet

Fatigue and Fracture of Engineering Materials and Structures

8756-758X (ISSN) 1460-2695 (eISSN)

Vol. 36 8 750-759


Grundläggande vetenskaper


Tillförlitlighets- och kvalitetsteknik

Sannolikhetsteori och statistik



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