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Improving interlaminar fracture toughness of flax fiber/epoxy composites with chopped flax yarn interleaving

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Abstract

In this research, unidirectional flax fabrics reinforced epoxy laminates were interleaved with randomly oriented chopped flax yarns at various yarn lengths and contents. Mode I interlaminar fracture toughness of the laminates was evaluated via Double Cantilever Beam (DCB) tests. The results showed that Mode I interlaminar fracture toughness increased with the introduction of the chopped yarns. With moderate yarn length and content, the best toughening effect (31% improvement in Mode I interlaminar fracture toughness) was achieved. It was observed with the aid of Scanning Electronic Microscopy (SEM) that the introduction of the chopped yarns resulted in more tortuous in-plane crack propagation paths as well as the “trans-layer” phenomenon and fiber bridging effect of both the unidirectional yarns and the chopped yarns. These hindered the growth of the crack and led to more energy dissipation during delamination progress. Excessive yarn length or content would induce unstable crack propagation and thus weakened the toughening improvement. No remarkable change was found in the tensile properties and the Charpy impact strength for the interleaved laminates, which indicated that this interleaving method was effective on interlaminar toughening without sacrificing the comprehensive mechanical properties of the laminates.

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References

  1. Joshi S V, Drzal L, Mohanty A, et al. Are natural fiber composites environmentally superior to glass fiber reinforced composites? Compos Part A-Appl S, 2004; 35: 371–376

    Article  Google Scholar 

  2. Netravali A N, Chabba S. Composites get greener. Mater Today, 2003; 6: 22–29

    Article  Google Scholar 

  3. Takagi H, Kako S, Kusano K, et al. Thermal conductivity of PLA-bamboo fiber composites. Adv Compos Mater, 2007; 16: 377–384

    Article  Google Scholar 

  4. Yang W, Li Y. Sound absorption performance of natural fibers and their composites. Sci China Tech Sci, 2012; 55: 2278–2283

    Article  Google Scholar 

  5. Li Y, Luo Y, Han S. Multi-scale structures of natural fibres and their applications in making automobile parts. J Biobased Mater Bio, 2010; 4: 164–171

    Article  MATH  Google Scholar 

  6. Pritchett I. Hemp and lime composites in sustainable construction. In: Proceedings of the 11th International Conference on Non-conventional Materials and Technologies (NOCMAT 2009), Bath, 2009. 6–9

    Google Scholar 

  7. Wambua P, Ivens J, Verpoest I. Natural fibres: can they replace glass in fibre reinforced plastics? Compos Sci Technol, 2003; 63: 1259–1264

    Article  Google Scholar 

  8. Li Y, Luo Y. Mechanical properties and applications of natural fiber reinforced composites. Acta Mech Solida Sin, 2010; 31: 613–630

    Google Scholar 

  9. Li X, Tabil L G, Panigrahi S. Chemical treatments of natural fiber for use in natural fiber-reinforced composites: a review. J Polym Environ, 2007; 15: 25–33

    Article  Google Scholar 

  10. Mouritz A. Review of z-pinned composite laminates. Compos Part A-Appl S, 2007; 38: 2383–2397

    Article  Google Scholar 

  11. Rong M Z, Zhang M Q, Liu Y, et al. Effect of stitching on in-plane and interlaminar properties of sisal/epoxy laminates. J Compos Mater, 2002; 36: 1505–1526

    Article  Google Scholar 

  12. Mouritz A, Bannister M, Falzon P, et al. Review of applications for advanced three-dimensional fibre textile composites. Compos Part A-Appl S, 1999; 30: 1445–1461

    Article  Google Scholar 

  13. Sohn M S, Hu X Z. Delamination behaviour of carbon fibre/epoxy composite laminates with short fibre reinforcement. Scripta Metall Mater, 1994; 30: 1467–1472

    Article  Google Scholar 

  14. Sohn M S, Hu X Z. Processing of carbon-fibre/epoxy composites with cost-effective interlaminar reinforcement. Compos Sci Technol, 1998; 58: 211–220

    Article  Google Scholar 

  15. Park B, Kim S C. A study of the interlaminar fracture toughness of a carbon-fiber/epoxy composite containing surface-modified short kevlar fibers. Compos Sci Technol, 1998; 58: 1599–1606

    Article  Google Scholar 

  16. Yadav S, Kumar V, Verma S K. Fracture toughness behaviour of carbon fibre epoxy composite with Kevlar reinforced interleave. Mat Sci Eng B-Solid, 2006; 132: 108–112

    Article  Google Scholar 

  17. Yasaee M, Bond I, Trask R, et al. Mode I interfacial toughening through discontinuous interleaves for damage suppression and control. Compos Part A-Appl S, 2012; 43: 198–207

    Article  Google Scholar 

  18. Yasaee M, Bond I, Trask R, et al. Mode II interfacial toughening through discontinuous interleaves for damage suppression and control. Compos Part A-Appl S, 2012; 43: 121–128

    Article  Google Scholar 

  19. Li Y M, Liu J, Huang B Z. Effect of short chopped fibers on mode i delamination toughness. J Northeast Univ, 2002, 11: 028

    Google Scholar 

  20. Huang B Z, Hu X Z, Liu J. Modelling of inter-laminar toughening from chopped Kevlar fibers. Compos Sci Technol, 2004, 64: 2165–2175

    Article  Google Scholar 

  21. Zhang Y, Li Y, Ma H, et al. Tensile and interfacial properties of unidirectional flax/glass fiber reinforced hybrid composites. Compos Sci Technol, 2013; 88: 172–177

    Article  Google Scholar 

  22. Johnson W S, Mangalgiri P. Investigation of fiber bridging in double cantilever beam specimens. DTIC Document, 1986

    Google Scholar 

  23. de Morais A. A new fibre bridging based analysis of the double cantilever beam (DCB) test. Compos Part A-Appl S, 2011, 42: 1361–1368

    Article  Google Scholar 

  24. Saheb D N, Jog J. Natural fiber polymer composites: A review. Adv Polym Tech, 1999; 18: 351–363

    Article  Google Scholar 

  25. Pinto M A, Chalivendra V B, Kim Y K, et al. Effect of surface treatment and Z-axis reinforcement on the interlaminar fracture of jute/epoxy laminated composites. Eng Fract Mech, 2013; 114: 104–114

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, 200092, China

    Yan Li, Di Wang & Hao Ma

  2. Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Tongji University, Shanghai, 200092, China

    Yan Li

Authors
  1. Yan Li
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  2. Di Wang
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  3. Hao Ma
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Correspondence to Yan Li.

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Li, Y., Wang, D. & Ma, H. Improving interlaminar fracture toughness of flax fiber/epoxy composites with chopped flax yarn interleaving. Sci. China Technol. Sci. 58, 1745–1752 (2015). https://doi.org/10.1007/s11431-015-5911-3

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  • DOI: https://doi.org/10.1007/s11431-015-5911-3

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