Mechanical behavior of carbon/flax hybridcomposites for structural applications

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64 Citations (Scopus)


In this work, the influence of an unidirectional carbon fabric layer on the mechanical performances of bidirectional flaxfabric/epoxy composites used for structural applications was studied. Two different bidirectional flax fabrics were used toproduce flax fabric reinforced plastic (FFRP) laminates by a vacuum bagging process: one is normally used to makecurtains; the other, heavier and more expensive than the previous one, is usually used as reinforcement in compositestructures. In order to realize hybrid structures starting from FFRP, an unidirectional UHM carbon fabric was used toreplace a bidirectional flax fabric. Tensile and three-point bending tests were performed to evaluate the mechanicalproperties of the laminates investigated (both FFRP and hybrids). Furthermore, the mechanical behavior of the differentbidirectional flax fabrics was analyzed by carrying out tensile tests. The experimental tests showed that the structuresreinforced with flax fabrics, normally used to make curtains, present better flexural properties than that of others while,in tensile configuration, these last show higher modulus and strength. Moreover, both FFRP laminates show low mechanicalproperties, which do not allow their use in structural applications while the presence of one external layer ofunidirectional carbon involves remarkable increase in their properties. According to this study, the hybrid compositesrealized could be used in several structural applications (i.e., nautical and automotive).
Original languageEnglish
Pages (from-to)2089-2096
Number of pages8
JournalJournal of Composite Materials
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry


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