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NOTE ON CYCLE COUNTS IN IRREGULAR LOADS
Author(s) -
Rychlik Igor
Publication year - 1993
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1993.tb00094.x
Subject(s) - gaussian , crest , cycle count , mathematics , trough (economics) , moment (physics) , structural engineering , physics , engineering , optics , classical mechanics , operations research , quantum mechanics , economics , macroeconomics
In this paper we discuss cycle counting methods, such as rainflow‐, crest‐to‐trough‐, positive peak‐count and different damage accumulation rules, for irregular random loads, which have an infinite number of local extremes in finite intervals, e.g. the fourth spectral moment is infinite. We present conservative bounds for the expected damage for such loads from the uncrossing intensity. These results are illustrated by examples of Gaussian, χ 2 , and Morison‐loads.