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Experimental investigation of the effect of defects in Automated Fibre Placement produced composite laminates

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)1004-1017
Number of pages14
JournalComposite Structures
Early online date23 Jun 2018
DateAccepted/In press - 21 Jun 2018
DateE-pub ahead of print - 23 Jun 2018
DatePublished (current) - 1 Oct 2018


Automated composite manufacturing processes such as Automated Tape Laying (ATL) and Automated Fibre Placement (AFP) are effective methods to produce high quality, lightweight parts. Typically, preimpregnated fibres or tapes are laid side-by-side onto a tooling surface to generate the composite preform. Although these two main technologies are widely used to produce large composite components, inconsistencies such as overlapping tapes or gaps between adjacent tapes may occur during the manufacturing. Within this study, the effect of gaps and overlaps, so-called defects, has been investigated experimentally. Tensile and compressive testing has been carried out on specimens with a quasi-isotropic, symmetric layup into which artificial defects in various defined formations were introduced. Of particular interest were the strength knockdown factors and changes in the failure mode.

    Structured keywords

  • Composites UTC

    Research areas

  • Automated Fibre Placement, Defects, Fibre misalignment, Delamination

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    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 7.87 MB, PDF document

    Licence: CC BY-NC-ND


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