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Why do we need composite materials? Composites, which are formed from two or
 

Summary: Why do we need composite materials?
Composites, which are formed from two or
more distinct materials, have desirable com-
binations of properties that aren't found in
the individual components. For example,
fibre-reinforced composites are engineered
structures that commonly comprise a soft
matrix -- typically a polymer -- encapsulat-
ing a stiffer, load-bearing filler in the form
of fibres or particles. For high-strength com-
posites, the fibres should be stiff and have a
high aspect ratio (length-to-width ratio). This
allows a good transfer of load from the matrix
to the filler when the composite is put under
mechanical stress, in much the same way that
steel bars reinforce concrete.
Whatmakescarbonnanotubesspecial
comparedwithotherreinforcingfibres?
It's the combination of their small size and
particular physical properties. Nanotubes

  

Source: Ajayan, Pulickel M. - Department of Mechanical Engineering and Materials Science, Rice University

 

Collections: Materials Science