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زبان فایل : انگلیسی
نوع فایل : PDF
The use of composite materials dates from centuries
ago when it all started with natural fibres. In ancient
Egypt some 3 000 years ago clay was reinforced by
straw to build walls. Later on the natural fibre lost much
of its interest.
With the industrial use of plastics combinations of
plastics with natural fibres or wood flour were
introduced. The body of the East German car ‘Trabant’
(1950-1990) was one of the typical examples for
application of natural fibres (cotton) embedded in a
polyester matrix.
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