In:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, The Royal Society, Vol. 376, No. 2126 ( 2018-08-13), p. 20170245-
Kurzfassung:
Wavelet analysis is applied to identify the time-variant dynamics of adaptive structures. The wavelet-based power spectrum of the structural response, wavelet-based frequency response function (FRF) and wavelet-based coherence are used to identify continuously and abruptly varying natural frequencies. A cantilever plate with surface-bonded macro fibre composite—which alters the structural stiffness—is used to demonstrate the application of the methods. The results show that the wavelet-based input–output characteristics—i.e. the FRF and coherence—can identify correctly the dynamics of the analysed time-variant system and reveal the varying natural frequency. The wavelet-based coherence can be used not only for the assessment of the quality of the wavelet-based FRF but also for the identification. This article is part of the theme issue ‘Redundancy rules: the continuous wavelet transform comes of age’.
Materialart:
Online-Ressource
ISSN:
1364-503X
,
1471-2962
DOI:
10.1098/rsta.2017.0245
Sprache:
Englisch
Verlag:
The Royal Society
Publikationsdatum:
2018
ZDB Id:
208381-4
ZDB Id:
1462626-3
SSG:
11
SSG:
5,1
SSG:
5,21
