Experimental assessment of modal properties of hybrid CFRP-timber panels

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dc.coverageDOI: 10.1016/j.conbuildmat.2024.137075
dc.creatorBravo, Tomas P.
dc.creatorGattas, Joseph M.
dc.creatorBravo, Felipe
dc.creatorAstroza, Rodrigo
dc.creatorMaluk, Cristian
dc.date2024
dc.date.accessioned2026-01-05T21:21:24Z
dc.date.available2026-01-05T21:21:24Z
dc.description<p>Hybrid timber composites are becoming increasingly widespread to efficiently enhance timber performance. While carbon fibre reinforcement has been explored for strength in timber structures, its impact on vibration performance remains understudied and is crucial as mass timber buildings extend their spans and heights. This work explores the effect of carbon fibre reinforcement on the vibration performance parameters of CLT floor systems. Natural frequency, mode shape, damping and stiffness parameters are evaluated from experimental testing using the Natural Excitation Technique (NExT) combined with the Eigensystem Realization Algorithm (ERA) and robust techniques for selection of physical dynamic properties, verified against numerical finite element models. The findings reveal that, in the case of three-ply Cross-laminated Timber (CLT) panels with depths ranging from 115 mm to 135 mm, introducing reinforcement at ratios below 0.67% led to an enhancement in frequencies, registering an increase of 6% to 11%, although not explicitly accounting for changes in environmental conditions. Moreover, these reinforced panels showed a relevant increase in effective flexural stiffness, ranging from 15% to 22%, when compared to their unreinforced counterparts. This means an improved maximum span of around 4%–6% within current design limits for timber floors influenced by vibration performance. These findings enhance the understanding and design of high-performance composite timber floors, promoting the use of renewable building materials in construction.</p>eng
dc.identifierhttps://investigadores.uandes.cl/en/publications/40298963-7472-4fc1-aa2f-8cdee8804a96
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/69415
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourcevol.438 (2024) date: 2024-08-09
dc.subjectCarbon fibre reinforcement
dc.subjectCross-laminated timber
dc.subjectHybrid timber structures
dc.subjectVibration performance
dc.subjectSDG 7 - Affordable and Clean Energy
dc.titleExperimental assessment of modal properties of hybrid CFRP-timber panelseng
dc.typeArticleeng
dc.typeArtículospa
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