Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Investigations of Mode I Fracture Toughness of a Hybrid Twill Woven Carbon and Aramid Fabric Composite

하이브리드 능직 탄소-아라미드 섬유 복합재의 모드 I 파괴인성에 대한 실험적 연구

  • Kwon, Woo Deok (Department of Safety Engineering, Pukyong National University) ;
  • Kwon, Oh Heon (Department of Safety Engineering, Pukyong National University)
  • 권우덕 (부경대학교 안전공학과) ;
  • 권오헌 (부경대학교 안전공학과)
  • Received : 2019.08.12
  • Accepted : 2019.10.11
  • Published : 2019.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Carbon fiber has excellent specific strength, corrosion resistance and heat resistance. And p-Aramid fiber has high toughness and heat resistance and high elasticity, and is used in various fields such as industrial protective materials, bulletproof helmets and vests, as well as industrial fields. However, carbon fiber is relatively expensive, and is susceptible to brittle fracture behavior due to its low fracture strain. On the other hand, the aramid fiber tends to decrease in elastic modulus and strength when applied to the epoxy matrix, but it is inexpensive and has higher elongation and fracture toughness than carbon fiber. Thus the twill hybrid carbonaramid fiber reinforced composite laminate composite was investigated for a delamination fracture toughness under Mode I loading by 2 kinds of MBT and MCC deduction. The specimen was fabricated with 20 hybrid fabric plies. The initial crack was made by inserting the teflon tape in the center plane with a0/W=0.5 length. The results show that SERR(Strain Energy Release Rate) as the critical and stable delamination fracture toughness were 0.09 kJ/㎡, 0.386 kJ/㎡ by MBT deduction, and 0.192 kJ/㎡, 0.67 kJ/㎡ by MCC deduction, respectively.

Keywords

References

  1. Y. R. Ryu, Y. S. Yun and O. H. Kwon, "AE Application for Fracture Behavior od SiC Reinforced CFRP Composites", J. Korean Soc. Saf., Vol. 31, No. 3, pp. 16-21, 2016. https://doi.org/10.14346/JKOSOS.2016.31.3.16
  2. H. Rahmani, S. H. Mahmoudi and A. Ashori, "Mechanical Performance of Epoxy/Carbon Fiber Laminated Composites", Journal of Reinforced Plastic Composites, Vol. 33, pp. 733-740, 2014. https://doi.org/10.1177/0731684413518255
  3. J. W. S. Hearle, "High-Performance Fibers", Woodhead Pub. Ltd., New York, pp. 23-58, 2001.
  4. L. Nicolais, M. Meo and E. Milella, "Composite Materials, A Vision for the Future", Springer, London, 2011.
  5. F. Larsson and L. Svensson, "Carbon, Polyethylene and PBO Hybrid Fiber Composite for Structural Lightweight Armour", Composite Part A, Vol. 33, No.2, pp. 221-231, 2002. https://doi.org/10.1016/S1359-835X(01)00095-1
  6. J. H. Kwak, Y. S. Yun and O. H. Kwon, "The Experimental Analysis of the PVC Foam Cored CFRP Sandwich Composite for the Mixed Mode Delamination Characteristics", J. Korean Soc. Saf., Vol. 33, No. 2, pp. 8-13, 2018. https://doi.org/10.14346/JKOSOS.2018.33.2.8
  7. A. K. Bandaru, L. Vetiyatil and S. Ahmad, "The Effect of Hybridization on the Ballistic Impact Behavior of Hybrid Composite Armors", Composites Part B, Vol. 76, pp. 300-319, 2015. https://doi.org/10.1016/j.compositesb.2015.03.012
  8. B. Nageswara Rao and A. R. Acharya, "Evaluation of fracture Energy, GIc using a Double Cantilever Beam Fiber Composite Specimen", Engineering Fracture Mechanics, Vol. 51, No. 2, pp. 317-322, 1995. https://doi.org/10.1016/0013-7944(94)00251-C
  9. J. W. Gillespie, L. A. Carlsson and A. J. Smiley, "Rate Dependent Mode I Interlaminar Crack Growth Mechanism in Graphite/Epoxy and Graphite/PEEk", Composite Science and Technology, Vol. 28, pp. 1-15, 1987. https://doi.org/10.1016/0266-3538(87)90058-3
  10. G. V. Marannano and A. Pasta, "An Analysis of Interface Delamination Mechanisms in Orthotropic and Hybrid Fiber-Metal Composite laminates", Engineering Fracture Mechanics, Vol. 74, pp. 612-626, 2007. https://doi.org/10.1016/j.engfracmech.2006.09.004
  11. Y. Zhao, M. Cao, W. P. Lum, V. B. C. tan and T. E. Tay, "Interlaminar Fracture Toughness of Hybrid Woven Carbon-Dyneema", Composites Part A, Vol. 114, pp. 377-387, 2018. https://doi.org/10.1016/j.compositesa.2018.08.035
  12. T. L. Anderson, "Fracture Mechanics: Fundamentals and Applications", CRC Press, London, pp. 52-55, 1995.
  13. ASTM D5528-94a, "Standard Test Method for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer Matrix Composites", Annual Book of ASTM Standards, 1994.
  14. T. K. O'Brien and R. H. Martin, "Results of ASTM Round Robin Testing for Mode I Interlaminar Fracture Toughness of Composite Materials", Journal of Composites Technology and Research, Vol. 15, No. 4, pp. 269-281, 1993. https://doi.org/10.1520/CTR10379J
  15. A. B. de Morais, "Double Cantilever Beam Testing of Multidirectional Laminates", Composite Part A; Applied Science, Vol. 34, No. 12, pp. 1135-1142, 2003. https://doi.org/10.1016/j.compositesa.2003.08.008
  16. S. C. Kim, J. S. Kim and H. J. Yoon, "Experimental and Numerical Investigation of Mode I Delamination Behaviors of Woven Fabric Composites with Carbon, Kevlar and Their Hybrid Fibers", International Journal of Precision Engineering and Manufacturing, Vol. 12, No. 2, pp. 321-329, 2011. https://doi.org/10.1007/s12541-011-0042-7
  17. ASTM D3039M-08, "Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials", Annual Book of ASTM Standards, 2008.
  18. M. Hossain, M. A. Khan, R. A. Khan, A. B. Siddiquee and T. Islam, "Carbon/Kevlar Reinforced Hybrid Composite: Impact of Matrix Variation", Proceedings of the International Conference on Mechanical Engineering and Renewable Energy, 2015.