TY - JOUR A1 - Trapp, Arvid A1 - Makua, Mafake James A1 - Wolfsteiner, Peter T1 - Fatigue assessment of amplitude-modulated non-stationary random vibration loading T2 - Procedia Structural Integrity N2 - Designing mechanical structures exposed to random vibration loading compromises the central challenges of defining comprehensive load assumptions and of processing these efficiently in a fatigue assessment. For this matter of statistical load description, frequency-domain methods withhold major advantages. They describe random vibration loading by its power spectral density, which allows drastic data reduction, to conduct efficient response analyses and to derive a statistical description of resulting load spectra. Nevertheless, this procedure is limited to stationary Gaussian loading. Thus, this paper proposes an extension of the frequency-domain approach to a special class of non-stationary loading – amplitude-modulated processes. These consist of a unique vibration state that varies in intensity, which is represented by a modulating signal. This paper develops a methodology to test for amplitude-modulated processes, to derive efficient measures for the intensity variation and to include this behavior in a fatigue assessment carried out in frequency-domain. The full methodology is presented via a set of simulated data. KW - Materialermüdung KW - Sonogramm Y1 - 2022 UR - https://opus4.kobv.de/opus4-hm/frontdoor/index/index/docId/234 UR - https://nbn-resolving.org/urn:nbn:de:bvb:m347-opus-2346 N1 - Sonderdruck aus: Procedia Structural Integrity 17(2019), S. 379–386 SP - 379 EP - 386 PB - Elsevier B.V. ER -