Investigation on Interlaminar Mechanical Properties of Hybrid CFRP/VGCF Laminates

Abstract:

In order to improve the interlaminar mechanical properties of CFRP laminate, hybrid CFRP/VGCF laminates have been fabricated by newly-developed powder method. The critical load at crack growth Pc and fracture toughness GIC have been found to be increased with VGCF interlayer through double cantilever beam (DCB) tests. Fracture surfaces of DCB specimens have also been observed to interpret this improvement mechanism. Moreover, numerical simulations using finite element method (FEM) with cohesive elements have been carried out to analyze the delamination propagation. The numerically obtained interlaminar tensile strength of hybrid CFRP/VGCF laminates has also been verified to be higher than that of base CFRP laminates.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 1759-1762
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.1759
• Online since: August 2009
• Authors: Yuan Li, Naoki Hori, Masahiro Arai, Hisao Fukunaga, Ning Hu
• Keywords: Hybrid CFRP/VGCF Laminates, Interlayer, Mechanical Property, Powder Method

References

[1] Sela N, Ishiai O. Composites Vol. 20, No. 5 (1989), pp.423-435.

[2] Kostopoulos V, Tsotra P, Karapappas P, et al. Compos Sci Technol Vol. 67 (2007), pp.822-828.

[3] Yokozeki T, Iwahori Y, Ishiwata S, Enomoto K. Composites: Part A Vol. 38 (2007), pp.449-460.

[4] Jen RMH, Tseng YC, Wu CH. Compos Sci Technol Vol. 65 (2005), pp.775-779.

[5] Arai M, Noro Y, Sugimoto K, Endo M. Compos Sci Technol Vol. 68 (2008), pp.516-525.

[6] JIS K 7086-1993. Tokyo: Japan Standards Association (1993).

[7] Walker L, Hu XZ. Scripta Materialia Vol. 41, No. 6 (1999), pp.575-582.

[8] Wang WX, Takao Y, Matsubara T, Kim HS. Compos Sci Technol Vol. 62 (2002), pp.767-774.

[9] Camanho PP, Davila CG. NASA/TN-2002-211737.