Damage and energy absorption behaviour of composite laminates under impact loading using different impactor geometries

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dc.contributor.authorDing, Yuzhe
dc.contributor.authorLiu, Jun
dc.contributor.authorHall, Zoe E. C.
dc.contributor.authorBrooks, Richard A.
dc.contributor.authorLiu, Haibao
dc.contributor.authorKinloch, Anthony J.
dc.contributor.authorDear, John P.
dc.date.accessioned2023-07-13T12:28:22Z
dc.date.available2023-07-13T12:28:22Z
dc.date.issued2023-06-24
dc.description.abstractThe present paper compares the damage and energy absorption behaviour of composites subjected to low-velocity impact using different frontal geometries for the impactor, with the composites possessing a layup of [02/902]2s. In this study, the rigid impactors with either round-nosed or flat-ended frontal geometry are employed to perform drop-weight tests at various impact energies ranging from 10 to 30 J. The measured loading response and energy absorption are analysed and compared. Additionally, the types and extent of impact-induced damage in the composite specimens are assessed via ultrasonic C-scan, optical microscopy (OM) and scanning electron microscopy (SEM) studies. It is shown that the impact energy threshold for damage initiation is greater than 20 J when using the flat-ended impactor but is less than 10 J when using the round-nosed impactor. In both cases, delamination initiates between the plies in the composite laminate. However, for the flat-ended impactor, the damage behaviour of the fibres exhibits kinking fracture, which differs from the pull-out fibre-fracture caused by the round-nosed impactor. These differences in behaviour are attributed to impactor/composite contact geometry effects which leads to different extents of indentation damage, which in turn directly affects the degree of delamination and fibre damage in the composite.en_UK
dc.identifier.citationDing Y, Liu J, Hall ZEC, et al., (2023) Damage and energy absorption behaviour of composite laminates under impact loading using different impactor geometries. Composite Structures, Volume 321, October 2023, Article number 117259en_UK
dc.identifier.issn0263-8223
dc.identifier.urihttps://doi.org/10.1016/j.compstruct.2023.117259
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19984
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectComposite laminatesen_UK
dc.subjectLow-velocity impacten_UK
dc.subjectImpactor geometryen_UK
dc.subjectUltrasonic C-scanen_UK
dc.subjectScanning electron microscopy (SEM)en_UK
dc.titleDamage and energy absorption behaviour of composite laminates under impact loading using different impactor geometriesen_UK
dc.typeArticleen_UK

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