Triple correlation for detection of damage-related nonlinearities in composite structures

dc.contributor.authorKlepka, Andrzej
dc.contributor.authorStrączkiewicz, Marcin
dc.contributor.authorPieczonka, Lukasz
dc.contributor.authorStaszewski, Wieslaw Jerzy
dc.contributor.authorGelman, Leonid
dc.contributor.authorAymerich, Francesco
dc.contributor.authorUhl, Tadeusz
dc.date.accessioned2016-09-23T11:36:50Z
dc.date.available2016-09-23T11:36:50Z
dc.date.issued2015-03-12
dc.description.abstractNonlinear effects in vibration responses are investigated for the undamaged composite plate and the composite plate with a delamination. The analysis is focused on higher harmonic generation in vibration responses for various excitation amplitude levels. This effect is investigated using the triple correlation technique. The dynamics of composite plate was modelled using two-dimensional finite elements and the classical lamination theory. The doubled-node approach was used to model delamination area. Mode shapes and natural frequencies were estimated based on numerical models. Next, the delamination divergence analysis was used to obtain relative displacements for delaminated plies. Experimental modal analysis test was carried out to verify the numerical models. The two strongest vibration modes as well as two vibration modes with the smallest and largest motion level of delaminated plies were selected for nonlinear vibration test. The Fisher criterion was employed to verify the effectiveness and confidence level of the proposed technique. The results show that the method can be used not only to reveal nonlinearities, but also to reliably detect impact damage in composites. These results are confirmed using the statistical analysis.en_UK
dc.identifier.citationKlepka A, Strączkiewicz M, Pieczonka L, et al., (2015) Triple correlation for detection of damage-related nonlinearities in composite structures. Nonlinear Dynamics, Volume 81, July 2015, pp. 453-468en_UK
dc.identifier.issn0924-090X
dc.identifier.urihttp://dx.doi.org/10.1007/s11071-015-2004-6
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/10578
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCompositesen_UK
dc.subjectDamage-related nonlinearitiesen_UK
dc.subjectImpact damage detectionen_UK
dc.subjectNonlinear vibrationen_UK
dc.subjectHigher harmonics generationen_UK
dc.subjectTriple correlationen_UK
dc.titleTriple correlation for detection of damage-related nonlinearities in composite structuresen_UK
dc.typeArticleen_UK

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