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Abstract

This study investigated five conductive nanocomposites for their compressive strength degradation after subjecting them to a simulated lightning strike. These systems consisted of a ply of nickel-coated carbon woven fabric as lightning strike protection component besides the four plies of standard carbon fibers (AS4) fabric embedded in the epoxy (EPON 862). The other four systems had an additional protection system, which was nickel-nanostrand veil (NiNS), aligned buckypaper, random buckypaper, or mixed buckypaper made up of vapor-grown carbon fibers and single-walled nanotubes. All other buckypapers were made of single-walled nanotubes. Failure and damage mechanisms were also investigated. The ultimate compressive strength reduced by about 75—30% from a simulated lightning strike. This reduction as well as the damage was maximum with NiNS and minimum with random buckypaper. Damage from the lightning strike was related to the electrical conductivity and degradation in the compressive strength of the tested systems.

Keywords

nanocomposites lightening strike compression damage mechanisms.

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References

Rakov, V.A. and Uman, M.A. ( 2003). Lightning: Physics and Effects, Cambridge University Press, United Kingdom.

Fisher, F.A. and Plumer, J.A. ( 1977). Lightning Protection of Aircraft, NASA Reference, Publication 1008, U.S. Government Printing Office, Washington, DC.

Military Standards (1983). MIL-STD-1757A, Lightning Qualification Test Techniques for Aerospace Vehicles and Hardware, 20 July.

SAE Technical Standards (1999). SAE ARP 5414, Aircraft Lightning Zoning.

Brown, A. ( 2005). Evaluating Lightning Surface Protection Systems for Aerospace Composites, In: International Conference on Lightning and Static Electricity (ICOLSE) Proceedings, Seattle, WA , 19-23 September.

Poole Jr, C.P. and Owens, F.J. ( 2003). Introduction to Nanotechnology, John Wiley & Sons, Inc, Hoboken, New Jersey.

Fielding, J.C. , Drain, A. , Will, K. , Gibson, T. , Putthanarat, S. and Stoffel, M. ( 2007). Conductive Nanocomposites: Focus on Lightning Strike Protection, In: Proceedings of International SAMPE Technology Conference, Cincinnati, Ohio, 30 October-2 November.

Gonnet, P. , Zhiyong, L. , Eun, S. , Kadambala, R.S. , Zhang, C. , Brooks, J.S. , Ben Wang, B. and Kramer, L. ( 2006). Thermal Conductivity of Magnetically Aligned Carbon Nanotube Buckypapers and Nanocomposites, Current Applied Physics, 6: 119-122.

Nickel NanostrandsTM Expand Nanotechnology Engineering Capabilities. Available at: www.afrl.af.mil (accessed August 14, 2008).

10.

Hansen, G. ( 2005). High Aspect Ratio Sub-Micron and Nano-Scale Metal Filaments , SAMPE Journal, 41: 24-33.

11.

Klosterman, D.A. (2004). Nanofibers Pass Conductivity Test, Reinforced Plastics, 48: 8-16.

12.

Gojny, F.H. , Wichmann, M.H.G. , Fiedler, B. , Kinloch, I.A. , Bauhofer, W. , Windle, A.H. and Schulte, K. (2006). Evaluation and Identification of Electrical and Thermal Conduction Mechanisms in Carbon Nanotube/Epoxy Composites , Polymer, 47: 2036-2045.

13.

Sandler, J.K.W. , Kirk, J.E. , Kinloch, I.A. , Shaffer, M.S.P. and Windle, A.H. (2003). Ultra-low Electrical Percolation Threshold in Carbon-Nanotube-Epoxy Composites, Polymer, 44: 5893-5899.

14.

Bolick, R.L. ( 2005). A Comparative Study of Unstitched, Stitched and Z-Pinned Plain Woven Composites under Fatigue Loading, PhD Dissertation, North Carolina Agricultural and Technical State University, Greensboro, NC.

Compression Strength Degradation of Nanocomposites after Lightning Strike

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