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FATIGUE TESTING WITH A DISCRETE‐TIME STOCHASTIC PROCESS
Author(s) -
Svensson T.
Publication year - 1994
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.1460-2695.1994.tb00270.x
Subject(s) - computer program , process (computing) , stochastic process , computer science , series (stratigraphy) , servo , engineering , mathematics , statistics , artificial intelligence , programming language , paleontology , biology
— A computer program that creates time histories for use in fatigue tests in servo‐hydraulic machines is presented. The time histories can be tailored from certain user specifications, namely the irregularity factor and the level‐crossing spectrum. The program is based on the theory of stochastic time series, and the formulae needed for the program are derived in the paper. Problems of optimality are treated both with respect to fulfilment of the specifications and with respect to machine performance. Examples from two fatigue‐testing projects, where the program has been applied, are presented.