Pseudo-ductile carbon/epoxy hybrid composites

Gergely Czel, Meisam Jalalvand, Michael R Wisnom

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

5 Citations (Scopus)
124 Downloads (Pure)

Abstract

Three different unidirectional interlayer hybrid composite configurations comprising different grades of carbon fibre/epoxy prepregs were designed and tested. The design of the hybrid configurations was based on two simple criteria to assure sufficient strength of the higher strain material layer and to avoid unstable delamination at the first fracture of the lower strain material layer. One of the three tested configurations demonstrated a favourable pseudo-ductile failure character along with outstanding initial stiffness and up to 1% pseudo-ductile strain between the first fracture and the final failure. A recently developed representation of the predicted failure sequence in the form of damage mode maps was applied to the tested configurations to understand the observed failure modes better. Good correlation was confirmed between the predictions and the experimental results; therefore the validity and merit of this new design tool was highlighted.
Original languageEnglish
Title of host publicationProceedings of the 20th International Conference on Composite Materials (ICCM20)
PublisherInternational Conference on Composite Materials, ICCM
Number of pages10
Publication statusPublished - 24 Jul 2015
Event20th International Conference on Composite Materials (ICCM20) - Copenhagen, Denmark
Duration: 19 Jul 201524 Jul 2015

Conference

Conference20th International Conference on Composite Materials (ICCM20)
CountryDenmark
CityCopenhagen
Period19/07/1524/07/15

Keywords

  • Hybrid composites
  • Pseudo-ductility
  • Fragmentation

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