Fatigue delamination behaviour of unidirectional carbon fibre/epoxy laminates reinforced by Z-Fiber (R) pinning

Denis D. R. Cartie, Jean-Martin Laffaille, Ivana K. Partridge, Andreas J. Brunner

Research output: Contribution to journalArticle (Academic Journal)peer-review

61 Citations (Scopus)


Z-Pin reinforced carbon-fibre epoxy laminates were tested under Mode I and Mode II conditions, both quasi-statically and in fatigue. Test procedures were adapted from existing standard or pre-standard tests. Samples containing 2% and 4% areal densities of carbon-fibre Z-pins (0.28 mm diameter) were compared with unpinned laminates. Quasi-static tests under displacement control yielded a dramatic increase of the apparent delamination resistance. Specimens with 2% pin density failed in Mode I at loads 170 N, equivalent to an apparent G(IC) of 2 kJ/m(2). Fatigue testing under load control showed that the presence of the through-thickness reinforcement slowed down fatigue delamination propagation. (C) 2009 Published by Elsevier Ltd.

Original languageEnglish
Pages (from-to)2834-2845
Number of pages12
JournalEngineering Fracture Mechanics
Issue number18
Publication statusPublished - Dec 2009

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