Structural response of aerospace-grade thin-ply woven and non-crimp fabrics

Albertino Arteiro, Giuseppe Catalanotti, José Xavier, Peter Linde, Pedro P. Camanho

Research output: Contribution to conferencePaperpeer-review

Abstract

The effect of ply thickness on the onset of intralaminar and interlaminar damage is extremely important for the structural response of laminated composite structures. This subject has gained more interest in recent years due to the introduction in the market of spread-tow, ultra-thin carbon-fibre reinforcements. In the present work, an experimental test campaign was carried out to study the structural response of aerospace-grade plain weave STFs of different areal weights, and NCFs with different levels of 0° ply blocking. The results show that multidirectional thin-STF laminates exhibit an improved tensile unnotched strength over the thick-STF laminate, and similar tensile notched strengths. In compression, the thin-STF laminate performed substantially better in both unnotched and notched configurations, but exhibited a similar bearing response. In the case of the thin-ply NCFs, the results show that, by grouping together the 0° plies in thicker blocks, an improved structural response was obtained on scaled coupons, as well as on mechanically fastened joints, without compromising the superior unnotched tensile and compressive strengths intrinsic to thin-ply laminates.

Original languageEnglish
Publication statusPublished - 01 Jan 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: 20 Aug 201725 Aug 2017

Conference

Conference21st International Conference on Composite Materials, ICCM 2017
CountryChina
CityXi'an
Period20/08/201725/08/2017

Keywords

  • Mechanical properties
  • Mechanical testing
  • Non-crimp fabrics (NCFs)
  • Polymer-matrix composites (PMCs)
  • Spread-tow fabrics (STFs)
  • Tow spreading

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

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