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

Wilhelm Woigk*, Stephen Hallett, Mike Jones, Moritz Kuhtz, Andreas Hornig, Maik Gude

*Corresponding author for this work

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

24 Citations (Scopus)
201 Downloads (Pure)

Abstract

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.

Original languageEnglish
Pages (from-to)1004-1017
Number of pages14
JournalComposite Structures
Volume201
Early online date23 Jun 2018
DOIs
Publication statusPublished - 1 Oct 2018

Structured keywords

  • Composites UTC

Keywords

  • Automated Fibre Placement
  • Defects
  • Fibre misalignment
  • Delamination

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