Characterizing delamination of fibre composites by mixed mode cohesive laws

Bent F. Sørensen, Torben K. Jacobsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A novel method is used for the determination of mixed mode cohesive laws and bridging laws for the characterisation of crack bridging in composites. The approach is based on an application of the J integral. The obtained cohesive laws were found to possess high peak stress values. Mixed mode cohesive stresses were found to depend on both the normal and tangential crack opening displacements. The bridging laws, which are to be used together with a mode mixity dependent crack tip fracture energy, were found to possess relative low bridging stresses; the peak normal bridging stress was approximately 2 MPa during pure Mode I and the maximum shear stress during pure Mode 11 was about 10 MPa. (C) 2008 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    JournalComposites Science and Technology
    Volume69
    Issue number3-4
    Pages (from-to)445-456
    ISSN0266-3538
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Materials research
    • Light strong materials for wind turbines and for transportation

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