Measurement of weak non-linear response of Kevlar® fibre damaged by UV exposure

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dc.contributor.authorCeravolo, Rosario
dc.contributor.authorDe Marchi, Andrea
dc.contributor.authorPinotti, Elena
dc.contributor.authorSurace, Cecilia
dc.contributor.authorZanotti Fragonara, Luca
dc.date.accessioned2017-10-24T08:42:08Z
dc.date.available2017-10-24T08:42:08Z
dc.date.issued2017-10-21
dc.description.abstractThis paper deals with a high-sensitivity method for the assessment of damage in high-strength fibres exposed to UV radiation. A recently developed experimental testing machine, based on an optical measurement system and electro-magnetic driving force, was used to characterize fibre materials. Stiffness, damping, and non-linearity were measured on several Kevlar® fibre samples previously exposed to UV light for different lengths of time. The results show that UV radiation increases the material non-linearity by amounts which can be clearly observed even at low vibration amplitudes. On the contrary, uncertainties affecting the determination of stiffness and damping with the adopted approach don’t seem to allow a similarly unambiguous UV damage assessment. Result confirm our initial hypothesis that non-linearity may be a valuable index of damage, at least in case of UV exposure, for applications in the Structural Health Monitoring (SHM) field.en_UK
dc.identifier.citationCeravolo R, De Marchi A, Pinotti E, et al., (2018) Measurement of weak non-linear response of Kevlar® fibre damaged by UV exposure. Composite Structures, Volume 184, January 2018, pp. 807-81en_UK
dc.identifier.issn0263-8223
dc.identifier.urihttps://doi.org/10.1016/j.compstruct.2017.10.056
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12667
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectNon-linear responseen_UK
dc.subjectVibration based monitoringen_UK
dc.subjectDampingen_UK
dc.subjectDynamic responseen_UK
dc.subjectUV degradationen_UK
dc.subjectHigh-strength fibresen_UK
dc.titleMeasurement of weak non-linear response of Kevlar® fibre damaged by UV exposureen_UK
dc.typeArticleen_UK

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