A combined experimental/numerical investigation on hygrothermal aging of fiber-reinforced composites

Research output: Research - peer-reviewJournal article – Annual report year: 2018

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DOI

  • Author: Rocha, I.B.C.M.

    Delft University of Technology, Netherlands

  • Author: van der Meer, F.P.

    Delft University of Technology, Netherlands

  • Author: Raijmaekers, S.

    Knowledge Centre Wind turbine Materials and Constructions, Netherlands

  • Author: Lahuerta, F.

    Knowledge Centre Wind turbine Materials and Constructions, Netherlands

  • Author: Nijssen, R.P.L.

    Knowledge Centre Wind turbine Materials and Constructions, Netherlands

  • Author: Mikkelsen, Lars Pilgaard

    Composites Mechanics and Materials Mechanics, Department of Wind Energy, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark

  • Author: Sluys, Lambertus Johannes

    Delft University of Technology, Netherlands

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This work investigates hygrothermal aging degradation of unidirectional glass/epoxy composite specimens through a combination of experiments and numerical modeling. Aging is performed through immersion in demineralized water. Interlaminar shear testes are performed after multiple conditioning times and after single immersion/redrying cycles. Degradation of the fiber-matrix interface is estimated using single-fiber fragmentation tests and reverse modeling combining analytical and numerical models. A fractographic analysis of specimens aged at 50°C and 65°C is performed through X-ray computed tomography. The aging process is modeled using a numerical framework combining a diffusion analysis with a concurrent multiscale model with embedded hyper-reduced micromodels. At the microscale, a pressure-dependent viscoelastic/viscoplastic model with damage is used for the resin and fiber-matrix debonding is modeled with a cohesive-zone model including samples redried after havingfriction. A comparison between numerical and experimental results is performed.
Original languageEnglish
JournalEuropean Journal of Mechanics A - Solids
Volume73
Pages (from-to)407-419
ISSN0997-7538
DOIs
StatePublished - 2018
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Fiber-reinforced composites, Multiscale analysis, Reduced-order modeling
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