A law of large numbers for upcrossing measures

Michael Scheutzow

Stochastic Processes and their Applications, 1994, vol. 53, issue 2, 285-305

Abstract: We present a mathematical treatment of the so called RFC-counting which is applied to functions from subsets of 1 to 1 and which essentially counts upcrossings for each pair of levels. In mechanical engineering it is applied to stress or strain histories to assess their potential fatigue damage. We associate three measures on 12 with RFC-counting and study their properties. Using the subadditive ergodic theorem of Kingman (1975) we prove a law of large numbers for these measures when they are applied to the paths of a stationary process. We compute the limit [mu] explicitly e.g. for one-dimensional stationary diffusion processes. [mu] may be compared with the spectral measure.

Keywords: Upcrossing; measure; Rainflow; counting; Fatigue; analysis; Stationary; process; Excursion; Law; of; large; numbers; Random; measure; Vague; convergence (search for similar items in EconPapers)
Date: 1994
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