Fabricating composite materials

Moreover, the carbon nanotube density is low. Thus, there is a considerable interest in using nanotubes to fabricate composite materials from the point of view of mechanical reinforcement. However, the above models assume a perfect adhesion of the nanotubes to the matrix. In practice, the interface can fail. Of course, this lowers the stress transfer and the reinforcement by the nanotubes. This is why controlling the surface chemistry of the nanotubes and their interactions with a polymer matrix are also critical challenges. 

Porous tungsten can be infiltrated either to machine it to rigid dimensional tolerances, or to fabricate composite materials. Copper, which is used as infiltrant for machining, can be completely removed afterward by heating in vacuum by evaporation. 

Zako M, Uetsuji Y, Kurashiki T. Finite element analysis of damaged woven fabric composite materials. Compos Sci Technol 2003 63 507—16. 

M. Kumosa, G. Odegard, D. Armentrout, L. Kumosa, K. Searles, and J. K. Sutter, Comparison of the +/-45 tensile and losipescu sheartests for woven fabric composite materials, J. Compos. Technol. Res., 24 [1] 3-16... 

In an earlier study, Ducheyne and Hench fabricated composite materials with a bioactive glass (Bioglass ) matrix and stainless steel fibre reinforcement by an immersion technique [25]. Donald et al. have reported on the fabrication of glass and glass-ceramic matrix composites reinforced by stainless steel and Ni-based alloy filaments with diameters in the range 4 to 22 [jum [100, 101]. Glass-encapsulated metal filaments prepared by the Taylor-wire process were used for the fabrication of the composites [100]. 

The fabrication of Cu or Ni coated carbon fiber reinforced Al using a centrifugal pressure infiltration method has been described by a member of NIKKEI Techno-Research [88]. The centrifugal casting technique appears to be an innovative method of fabricating composite materials. 

Hassan, T.A., Rangari, V.K., Jeelani, S., 2010. Synthesis, processing and characterization of shear thickening fluid (STF) impregnated fabric composites. Materials Science and Engineering A 527, 2892—2899. 

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